diff --git a/bsp/apollo2/rtconfig.py b/bsp/apollo2/rtconfig.py
index 579c93b17b4ad95c378960b5cffa8923e8ef4632..354e5f638965a4b67bac02dcbe448d0d1ed07e39 100644
--- a/bsp/apollo2/rtconfig.py
+++ b/bsp/apollo2/rtconfig.py
@@ -18,9 +18,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/avr32uc3b0/rtconfig.py b/bsp/avr32uc3b0/rtconfig.py
index b6004940d9c7457c4ca4bdb5f76512f03dc27b71..a9400c60510a7517454ef0d4b4aa3d67f0b0ac89 100644
--- a/bsp/avr32uc3b0/rtconfig.py
+++ b/bsp/avr32uc3b0/rtconfig.py
@@ -15,14 +15,14 @@ if  CROSS_TOOL == 'gcc':
 	PLATFORM 	= 'gcc'
 	EXEC_PATH 	= 'C:/Program Files/Atmel/AVR Tools/AVR Toolchain/bin'
 elif CROSS_TOOL == 'keil':
-    print '================ERROR============================'
-    print 'Not support keil yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support keil yet!')
+    print('=================================================')
     exit(0)
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/beaglebone/rtconfig.py b/bsp/beaglebone/rtconfig.py
index a5561f54d30f7588c5c4692c3ae21981a04be52b..6cd0b715054ffd38d7745f6fd5e2ead716e5ae20 100644
--- a/bsp/beaglebone/rtconfig.py
+++ b/bsp/beaglebone/rtconfig.py
@@ -15,9 +15,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support IAR yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support IAR yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/efm32/rtconfig.py b/bsp/efm32/rtconfig.py
index b412851de43a26349c11218212ca88784e288649..b1bd8330bb7e4f98919ff10fcd07d97eb1826e99 100644
--- a/bsp/efm32/rtconfig.py
+++ b/bsp/efm32/rtconfig.py
@@ -13,14 +13,14 @@ if CROSS_TOOL == 'gcc':
     EXEC_PATH   = 'C:\Program Files (x86)\CodeSourcery\Sourcery G++ Lite\bin'
     #EXEC_PATH  = 'C:\Program Files (x86)\yagarto\bin'
 elif CROSS_TOOL == 'keil':
-    print '================ERROR============================'
-    print 'Not support keil yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support keil yet!')
+    print('=================================================')
     exit(0)
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/frdm-k64f/rtconfig.py b/bsp/frdm-k64f/rtconfig.py
index baaf4905faa679a637d9aa771b41e0606dce58c1..009b4b71fb352035e1a3d6b3b657a237c016b825 100644
--- a/bsp/frdm-k64f/rtconfig.py
+++ b/bsp/frdm-k64f/rtconfig.py
@@ -17,9 +17,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= r'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/gd32450z-eval/SConstruct b/bsp/gd32450z-eval/SConstruct
index 42ae8c96468228b9c144ecec4a420c99f83a46e5..27ac9b02419dfda077c18a3a04d68802cb44c120 100644
--- a/bsp/gd32450z-eval/SConstruct
+++ b/bsp/gd32450z-eval/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-gd32f4xx.' + rtconfig.TARGET_EXT
diff --git a/bsp/gd32450z-eval/rtconfig.py b/bsp/gd32450z-eval/rtconfig.py
index 70ffabba2f82de7a3a4fc573e0124d109bff9ca3..af754e3c75d23868b014ed202fddfdc221c0248a 100644
--- a/bsp/gd32450z-eval/rtconfig.py
+++ b/bsp/gd32450z-eval/rtconfig.py
@@ -13,9 +13,9 @@ if os.getenv('RTT_ROOT'):
 # cross_tool provides the cross compiler
 # EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
 if  CROSS_TOOL == 'gcc':
-    print '================ERROR============================'
-    print 'Not support gcc yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support gcc yet!')
+    print('=================================================')
     PLATFORM    = 'gcc'
 elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
diff --git a/bsp/lm3s8962/rtconfig.py b/bsp/lm3s8962/rtconfig.py
index 0a0c98a71d2ad6978b87d323e12bae71fd463ec8..829120bd3ad0fc9b11db799653d3d9df64185a4a 100644
--- a/bsp/lm3s8962/rtconfig.py
+++ b/bsp/lm3s8962/rtconfig.py
@@ -18,9 +18,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':	
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)	
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lm3s9b9x/rtconfig.py b/bsp/lm3s9b9x/rtconfig.py
index f806ec1e19f2b79405d83a829b9bd747c064b04b..d9c51ac722e52aa5e3d4dfed3ee777f84d193d1b 100644
--- a/bsp/lm3s9b9x/rtconfig.py
+++ b/bsp/lm3s9b9x/rtconfig.py
@@ -18,9 +18,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':	
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lm4f232/rtconfig.py b/bsp/lm4f232/rtconfig.py
index cfe518891b5a2f6685fcb054dbf9b3b336e69c2b..5e6075ead5e5d5cafd613a5d26e8ad0ad2df9bbf 100644
--- a/bsp/lm4f232/rtconfig.py
+++ b/bsp/lm4f232/rtconfig.py
@@ -20,9 +20,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= r'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)	
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lpc178x/rtconfig.py b/bsp/lpc178x/rtconfig.py
index a0b42430812f1e6a2b3458e0e703a1a2f5dede64..a5302bb36f8a44dd459baaa6479b3098af73c82c 100644
--- a/bsp/lpc178x/rtconfig.py
+++ b/bsp/lpc178x/rtconfig.py
@@ -15,9 +15,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lpc2148/rtconfig.py b/bsp/lpc2148/rtconfig.py
index 2c44325803897bdef17772de9fe4d92175895fb7..57f7ee46da6c1474520e22b0f636bada5e9c4d00 100644
--- a/bsp/lpc2148/rtconfig.py
+++ b/bsp/lpc2148/rtconfig.py
@@ -15,9 +15,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:\Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)	
 	
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lpc2478/rtconfig.py b/bsp/lpc2478/rtconfig.py
index 5e9958246969d634daca12a9b2fa465d33e34814..7464fa0dc430adaa97dfad2e47f381776419f7e5 100644
--- a/bsp/lpc2478/rtconfig.py
+++ b/bsp/lpc2478/rtconfig.py
@@ -15,9 +15,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lpc408x/rtconfig.py b/bsp/lpc408x/rtconfig.py
index a2a6fac53f5668f9918eba2bf4b36993466ff3f7..ba797aab63539952c7c28c60a54650b12b7bd2cd 100644
--- a/bsp/lpc408x/rtconfig.py
+++ b/bsp/lpc408x/rtconfig.py
@@ -16,9 +16,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'D:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lpc43xx/M0/SConstruct b/bsp/lpc43xx/M0/SConstruct
index c7967d02f6fe07393fe306df24b7649fee150de9..c0d1d2fdc0e52b0c25b4966d1fa33d43f398577d 100644
--- a/bsp/lpc43xx/M0/SConstruct
+++ b/bsp/lpc43xx/M0/SConstruct
@@ -29,7 +29,7 @@ if rtconfig.CROSS_TOOL == 'gcc':
     import glob
     # Remove the .o for M0 left on the drivers dir.
     for i in glob.glob(GetCurrentDir() + '/../drivers/*.o'):
-        print 'RM %s' % i
+        print('RM %s' % i)
         os.unlink(i)
 
     if sys.platform.startswith('linux'):
@@ -40,7 +40,7 @@ if rtconfig.CROSS_TOOL == 'gcc':
     else:
         # Assume Windows.
         ocwd = os.getcwdu()
-        print 'TODO: remove the object files in ../Libraries'
+        print('TODO: remove the object files in ../Libraries')
         os.chdir(ocwd)
 
 # do building 
diff --git a/bsp/lpc43xx/M4/SConstruct b/bsp/lpc43xx/M4/SConstruct
index 7b02b732d48f27beb23e9e4da155ea95f9f35828..a6390025a3f0f0d004fd27842936bab5d444d59e 100644
--- a/bsp/lpc43xx/M4/SConstruct
+++ b/bsp/lpc43xx/M4/SConstruct
@@ -26,14 +26,14 @@ Export('rtconfig')
 objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
 
 if rtconfig.CROSS_TOOL == 'gcc':
-    print 'build M0 code first'
+    print('build M0 code first')
     if sys.platform.startswith('linux'):
         import glob
         ocwd = os.getcwdu()
         os.chdir('../M0')
         res = os.system('scons')
         if res:
-            print 'build M0 exit with code %d\n' % res
+            print('build M0 exit with code %d\n' % res)
             sys.exit(res)
         os.chdir(ocwd)
         res = os.system('cd ../Libraries/; find -name \*.o -exec rm {} \;')
@@ -47,7 +47,7 @@ if rtconfig.CROSS_TOOL == 'gcc':
 
     # Remove the .o for M0 left on the drivers dir.
     for i in glob.glob(GetCurrentDir() + '/../drivers/*.o'):
-        print 'RM %s' % i
+        print('RM %s' % i)
         os.unlink(i)
 
 # do building 
diff --git a/bsp/lpc5410x/rtconfig.py b/bsp/lpc5410x/rtconfig.py
index 555a1b49623d6a75972113028a00206a310c7b1a..3c0e37fe07a0dcc8069327acbf3c6003ff344b69 100644
--- a/bsp/lpc5410x/rtconfig.py
+++ b/bsp/lpc5410x/rtconfig.py
@@ -16,9 +16,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'D:/Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/lpc824/rtconfig.py b/bsp/lpc824/rtconfig.py
index 7fb0a2e110b3d1ddfe3e632808e8d39fa92958a7..906729dfb947722aa1aa6aa333c23e4f3ac9e618 100644
--- a/bsp/lpc824/rtconfig.py
+++ b/bsp/lpc824/rtconfig.py
@@ -11,9 +11,9 @@ if os.getenv('RTT_CC'):
 # cross_tool provides the cross compiler
 # EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
 if  CROSS_TOOL == 'gcc':
-    print '================ERROR============================'
-    print 'Not support gcc yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support gcc yet!')
+    print('=================================================')
 elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= 'C:/keil_v5'
diff --git a/bsp/ls1bdev/rtconfig.py b/bsp/ls1bdev/rtconfig.py
index 70077e64ce621df31182ee07d06de878d779e8b6..4dcbf0bd75f9477acdf2319cc8d6d084bc91dae9 100644
--- a/bsp/ls1bdev/rtconfig.py
+++ b/bsp/ls1bdev/rtconfig.py
@@ -14,9 +14,9 @@ if  CROSS_TOOL == 'gcc':
 	PLATFORM    = 'gcc'
 	EXEC_PATH   = r'C:\Program Files\CodeSourcery\Sourcery G++ Lite For MIPS ELF\bin'
 else:
-    print '================ERROR============================'
-    print 'Not support %s yet!' % CROSS_TOOL
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support %s yet!' % CROSS_TOOL)
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/ls1cdev/rtconfig.py b/bsp/ls1cdev/rtconfig.py
index c08dfc6852dc4593022a21733a66e146e480d627..4bf85c0993a682c1ad7e7a183b1143da58c4473f 100644
--- a/bsp/ls1cdev/rtconfig.py
+++ b/bsp/ls1cdev/rtconfig.py
@@ -15,9 +15,9 @@ if  CROSS_TOOL == 'gcc':
 #	EXEC_PATH   = "/opt/mips-2015.05/bin"
 	EXEC_PATH   = r'D:\mgc\embedded\codebench\bin'
 else:
-    print '================ERROR==========================='
-    print 'Not support %s yet!' % CROSS_TOOL
-    print '================================================='
+    print('================ERROR===========================')
+    print('Not support %s yet!' % CROSS_TOOL)
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/m16c62p/rtconfig.py b/bsp/m16c62p/rtconfig.py
index 494f52ff76b8d5b34baf0db9802c1794a7cc8c65..5fb198af6c60f16cf136ef636050eef5c6dd0424 100644
--- a/bsp/m16c62p/rtconfig.py
+++ b/bsp/m16c62p/rtconfig.py
@@ -17,9 +17,9 @@ elif CROSS_TOOL == 'iar':
 	IAR_PATH = 'C:/Program Files/IAR Systems/Embedded Workbench Evaluation 6.0'
 #	EXEC_PATH 	= 'C:/Program Files/IAR Systems/Embedded Workbench Evaluation 6.0'
 elif CROSS_TOOL == 'keil':
-    print '================ERROR============================'
-    print 'Not support keil yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support keil yet!')
+    print('=================================================')
     exit(0)	
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/mb9bf568r/rtconfig.py b/bsp/mb9bf568r/rtconfig.py
index 82cf6acf38fc6550e6b445f89ff568172fa82099..abee5014b253aff2a93b13bb7791c17aac72a94a 100644
--- a/bsp/mb9bf568r/rtconfig.py
+++ b/bsp/mb9bf568r/rtconfig.py
@@ -16,9 +16,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM    = 'armcc'
     EXEC_PATH   = 'C:/Keil_MDK_471'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/mini2440/rtconfig.py b/bsp/mini2440/rtconfig.py
index bdd11aafef511a70ee75dfa4e6becd369470153d..969cd7fa8227ff5db5aaccc78fd9f8f21a3a2fc6 100644
--- a/bsp/mini2440/rtconfig.py
+++ b/bsp/mini2440/rtconfig.py
@@ -21,9 +21,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/mini4020/rtconfig.py b/bsp/mini4020/rtconfig.py
index 9d7b859db8c0987c025d54c91a45382d61ee475a..be8e4535c75d81ce29e447dc294c2f9738cd9ef5 100644
--- a/bsp/mini4020/rtconfig.py
+++ b/bsp/mini4020/rtconfig.py
@@ -10,18 +10,18 @@ CROSS_TOOL 	= 'keil'
 if os.getenv('RTT_CC'):
 	CROSS_TOOL = os.getenv('RTT_CC')
 
-if CROSS_TOOL == 'gcc':
-    print '================ERROR============================'
-    print 'Not support gcc yet!'
-    print '================================================='
+if  CROSS_TOOL == 'gcc':
+    print('================ERROR============================')
+    print('Not support gcc yet!')
+    print('=================================================')
     exit(0)
 elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'c:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/nrf51822/rtconfig.py b/bsp/nrf51822/rtconfig.py
index 3e9c68fed8e6254b0c6184a1274be536591933c8..654730708efd4e3f885a0a4f0a2342c5f5cf0b5d 100644
--- a/bsp/nrf51822/rtconfig.py
+++ b/bsp/nrf51822/rtconfig.py
@@ -17,9 +17,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/nrf52832/rtconfig.py b/bsp/nrf52832/rtconfig.py
index 5e40e7201ed30a1423fb6937889a3e95a2768f93..1775b4ab4b1d7af46bcc0d1c38e675570a4b971a 100644
--- a/bsp/nrf52832/rtconfig.py
+++ b/bsp/nrf52832/rtconfig.py
@@ -18,9 +18,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/nv32f100x/rtconfig.py b/bsp/nv32f100x/rtconfig.py
index 6927eee3ab869614cfad6d4b65e2f7c4d39aa63c..bf568e19b78d785091e6356e0fb1ad53ede00437 100644
--- a/bsp/nv32f100x/rtconfig.py
+++ b/bsp/nv32f100x/rtconfig.py
@@ -14,14 +14,14 @@ if  CROSS_TOOL == 'gcc':
     PLATFORM 	= 'gcc'
     EXEC_PATH 	= 'G:/iot/camera_studio-win32-20160903/camera_studio/tools/arm-2014.05/bin'
 elif CROSS_TOOL == 'keil':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/realview-a8/SConstruct b/bsp/realview-a8/SConstruct
index 6d57bc402544e138913a82db403ab35ce6bbc648..67ae413023f3d7364236899c70dea8cecfd431f9 100644
--- a/bsp/realview-a8/SConstruct
+++ b/bsp/realview-a8/SConstruct
@@ -29,7 +29,7 @@ if GetDepend('RT_USING_VMM'):
     if os.system('{cppcmd} -P -C -E -I. -D__ASSEMBLY__ {ldfile}.S -o {ldfile}'.format(
                   cppcmd = os.path.join(rtconfig.EXEC_PATH, 'arm-none-eabi-gcc'),
                   ldfile = rtconfig.LINK_SCRIPT)) != 0:
-        print 'failed to generate linker script %s' % rtconfig.LINK_SCRIPT
+        print('failed to generate linker script %s' % rtconfig.LINK_SCRIPT)
         sys.exit(255)
     # if the linker script changed, relink the target
     Depends(TARGET, rtconfig.LINK_SCRIPT)
diff --git a/bsp/rm48x50/rtconfig.py b/bsp/rm48x50/rtconfig.py
index b5e3664dbd7a57f6befcd38c703d786231856e2a..e0899cf38edbeb75cc527793b8f5402d03eafa9c 100644
--- a/bsp/rm48x50/rtconfig.py
+++ b/bsp/rm48x50/rtconfig.py
@@ -15,9 +15,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support IAR yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support IAR yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/sam7x/rtconfig.py b/bsp/sam7x/rtconfig.py
index 565120bfeda662b6aa1bb7bc3e699425317482af..761c1b9b6f203c4e066944c51c3cfdfbb0190dc3 100644
--- a/bsp/sam7x/rtconfig.py
+++ b/bsp/sam7x/rtconfig.py
@@ -16,9 +16,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/samd21/rtconfig.py b/bsp/samd21/rtconfig.py
index edd1d7358db444dda25f91e6476301a02f4654a1..9b4743a20c76b07d336599ec9196eb5e9d771494 100644
--- a/bsp/samd21/rtconfig.py
+++ b/bsp/samd21/rtconfig.py
@@ -22,9 +22,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/sep6200/rtconfig.py b/bsp/sep6200/rtconfig.py
index 58b05417ade67e05656c241f9c5a66a40d867cae..53384875c9d3ac5c2d6a8009019e3073fbb79961 100644
--- a/bsp/sep6200/rtconfig.py
+++ b/bsp/sep6200/rtconfig.py
@@ -14,9 +14,9 @@ if  CROSS_TOOL == 'gcc':
 	PLATFORM 	= 'gcc'
 	EXEC_PATH 	= '/usr/unicore/gnu-toolchain-unicore/uc4-1.0-beta-hard-RHELAS5/bin/'
 else :
-    print '================ERROR============================'
-    print 'Not support yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/simulator/SConstruct b/bsp/simulator/SConstruct
index 4283082d049b5b0264ac472067117269bbd1b18e..d433039bba1b1b8c660c2972a96a3d47920d7be9 100755
--- a/bsp/simulator/SConstruct
+++ b/bsp/simulator/SConstruct
@@ -80,7 +80,7 @@ objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
 
 def ObjRemove(objs, remove):
     for item in objs:
-        # print type(item), os.path.basename(str(item))
+        # print(type(item), os.path.basename(str(item)) )
         if os.path.basename(str(item)) in remove:
              objs.remove(item)
     return
diff --git a/bsp/simulator/rtconfig.py b/bsp/simulator/rtconfig.py
index c62b24ea93ca6d9f56205d518c22147d3c4a4a31..915cc3f6864c21e93aa223ea6b9a6b4d1dae6897 100755
--- a/bsp/simulator/rtconfig.py
+++ b/bsp/simulator/rtconfig.py
@@ -27,7 +27,7 @@ elif  CROSS_TOOL == 'msvc':
     PLATFORM  = 'cl'
     EXEC_PATH = ''
 else:
-    print "bad CROSS TOOL!"
+    print("bad CROSS TOOL!")
     exit(1)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/stm32f0x/rtconfig.py b/bsp/stm32f0x/rtconfig.py
index 790e6215ed6ff44fd033c2daa0e8b78f26dd32c6..659b664723f19e46840255a47aa428702b9c6795 100644
--- a/bsp/stm32f0x/rtconfig.py
+++ b/bsp/stm32f0x/rtconfig.py
@@ -17,9 +17,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/stm32f40x/SConstruct b/bsp/stm32f40x/SConstruct
index 99c2876aab8c7db10531d0ad30a0b65cf0ea1066..ea1e8bf447ad3bcb43fa818282fa30ed655e46f0 100644
--- a/bsp/stm32f40x/SConstruct
+++ b/bsp/stm32f40x/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f4xx.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32f40x/rtconfig.py b/bsp/stm32f40x/rtconfig.py
index 3438597ee6a578e8c54967486e3155a58ba4be75..1df602062833764061dcc89530a1c7e73395f5ee 100644
--- a/bsp/stm32f40x/rtconfig.py
+++ b/bsp/stm32f40x/rtconfig.py
@@ -17,9 +17,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= r'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/stm32f411-nucleo/SConstruct b/bsp/stm32f411-nucleo/SConstruct
index b4d12cc06b5bdc3ac62bd61380178ca6212d8045..4921ba69bc407c7e581939062e0c1f70af970d0b 100644
--- a/bsp/stm32f411-nucleo/SConstruct
+++ b/bsp/stm32f411-nucleo/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f411.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32f429-apollo/SConstruct b/bsp/stm32f429-apollo/SConstruct
index ac3196e370ca9afd587f6f9712842daa8c3f6131..ea6c96c0a8c8ed5892056bdc735a16f4b033a6de 100644
--- a/bsp/stm32f429-apollo/SConstruct
+++ b/bsp/stm32f429-apollo/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f42x.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32f429-armfly/SConstruct b/bsp/stm32f429-armfly/SConstruct
index ac3196e370ca9afd587f6f9712842daa8c3f6131..ea6c96c0a8c8ed5892056bdc735a16f4b033a6de 100644
--- a/bsp/stm32f429-armfly/SConstruct
+++ b/bsp/stm32f429-armfly/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f42x.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32f429-armfly/rtconfig.py b/bsp/stm32f429-armfly/rtconfig.py
index 50b58434d9dac747ca6e150c67f6ded774a81c7d..ece5a363fb3bf72ec324b7839e7fe7f840d6f6ae 100644
--- a/bsp/stm32f429-armfly/rtconfig.py
+++ b/bsp/stm32f429-armfly/rtconfig.py
@@ -19,9 +19,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= r'C:/Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/stm32f429-disco/SConstruct b/bsp/stm32f429-disco/SConstruct
index ac3196e370ca9afd587f6f9712842daa8c3f6131..ea6c96c0a8c8ed5892056bdc735a16f4b033a6de 100644
--- a/bsp/stm32f429-disco/SConstruct
+++ b/bsp/stm32f429-disco/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f42x.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32f429-disco/rtconfig.py b/bsp/stm32f429-disco/rtconfig.py
index 312b46052cdf2b1e1ec40fb3acbb22e0a2a76935..40d5f3c805a8518ce944f3aa49d250cbc0656e5f 100644
--- a/bsp/stm32f429-disco/rtconfig.py
+++ b/bsp/stm32f429-disco/rtconfig.py
@@ -17,9 +17,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= r'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/stm32f4xx-HAL/SConstruct b/bsp/stm32f4xx-HAL/SConstruct
index 99c2876aab8c7db10531d0ad30a0b65cf0ea1066..ea1e8bf447ad3bcb43fa818282fa30ed655e46f0 100644
--- a/bsp/stm32f4xx-HAL/SConstruct
+++ b/bsp/stm32f4xx-HAL/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f4xx.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32f7-disco/SConstruct b/bsp/stm32f7-disco/SConstruct
index af8f4a90b23465f6fb4cd2cce6f0fc286cca8a30..edbf0c62b8575b20938a32d0a1bf1341ce6c9c03 100644
--- a/bsp/stm32f7-disco/SConstruct
+++ b/bsp/stm32f7-disco/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f7xx.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32h743-nucleo/SConstruct b/bsp/stm32h743-nucleo/SConstruct
index 1e2018c543ff3e83646faa69a03d21bfa1811d13..dae244260ac8d089397243a1209992fe95c079b3 100644
--- a/bsp/stm32h743-nucleo/SConstruct
+++ b/bsp/stm32h743-nucleo/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32h7xx.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32l072/rtconfig.py b/bsp/stm32l072/rtconfig.py
index a8f00d12da7a9e3c9eac9472418350c38e419780..8796a79b60c09caf95b208c51043caf5d5bb08db 100644
--- a/bsp/stm32l072/rtconfig.py
+++ b/bsp/stm32l072/rtconfig.py
@@ -14,14 +14,14 @@ if  CROSS_TOOL == 'gcc':
     PLATFORM 	= 'gcc'
     EXEC_PATH 	= 'G:/iot/camera_studio-win32-20160903/camera_studio/tools/arm-2014.05/bin'
 elif CROSS_TOOL == 'keil':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/stm32l475-iot-disco/SConstruct b/bsp/stm32l475-iot-disco/SConstruct
index ac3196e370ca9afd587f6f9712842daa8c3f6131..ea6c96c0a8c8ed5892056bdc735a16f4b033a6de 100644
--- a/bsp/stm32l475-iot-disco/SConstruct
+++ b/bsp/stm32l475-iot-disco/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32f42x.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32l475-iot-disco/rtconfig.py b/bsp/stm32l475-iot-disco/rtconfig.py
index 50b58434d9dac747ca6e150c67f6ded774a81c7d..ece5a363fb3bf72ec324b7839e7fe7f840d6f6ae 100644
--- a/bsp/stm32l475-iot-disco/rtconfig.py
+++ b/bsp/stm32l475-iot-disco/rtconfig.py
@@ -19,9 +19,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= r'C:/Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/stm32l476-nucleo/SConstruct b/bsp/stm32l476-nucleo/SConstruct
index 1a323565311e71acd45d31a16ea140dcc58e0034..063261ea93f50ea389cab86e2e0ca7b8b3d1c1cd 100644
--- a/bsp/stm32l476-nucleo/SConstruct
+++ b/bsp/stm32l476-nucleo/SConstruct
@@ -11,8 +11,8 @@ sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 try:
     from building import *
 except:
-    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
-    print RTT_ROOT
+    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
+    print(RTT_ROOT)
     exit(-1)
 
 TARGET = 'rtthread-stm32l476.' + rtconfig.TARGET_EXT
diff --git a/bsp/stm32l476-nucleo/rtconfig.py b/bsp/stm32l476-nucleo/rtconfig.py
index 3b863008b222a48d739f503d62835e2ac5535001..43fad6104beff61c64310a71b6b8ab039cc09857 100644
--- a/bsp/stm32l476-nucleo/rtconfig.py
+++ b/bsp/stm32l476-nucleo/rtconfig.py
@@ -19,9 +19,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= r'C:/Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/tm4c129x/rtconfig.py b/bsp/tm4c129x/rtconfig.py
index d92c9f1101d8cba6ec10659d74daad42869941b3..9b8b95a402206d2bd0542fe9f7f92e21ddb0f4bc 100644
--- a/bsp/tm4c129x/rtconfig.py
+++ b/bsp/tm4c129x/rtconfig.py
@@ -21,9 +21,9 @@ elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= r'D:\Keil_v5'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)	
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/upd70f3454/rtconfig.py b/bsp/upd70f3454/rtconfig.py
index ad1565251d471730dcbd69c5cfc60baced549fee..e25c81cfc710ced5c5e2036fc69115fc4819af2e 100644
--- a/bsp/upd70f3454/rtconfig.py
+++ b/bsp/upd70f3454/rtconfig.py
@@ -10,17 +10,17 @@ if os.getenv('RTT_CC'):
 	CROSS_TOOL = os.getenv('RTT_CC')
 
 if  CROSS_TOOL == 'gcc':
-    print '================ERROR============================'
-    print 'Not support gcc yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support gcc yet!')
+    print('=================================================')
     exit(0)
 elif CROSS_TOOL == 'iar':
 	PLATFORM 	= 'iar'
 	IAR_PATH = 'C:/Program Files/IAR Systems/Embedded Workbench 6.0 Evaluation_0'
 elif CROSS_TOOL == 'keil':
-    print '================ERROR============================'
-    print 'Not support keil yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support keil yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/x1000/rtconfig.py b/bsp/x1000/rtconfig.py
index 331639b2e7e95dc3ca2b8b60200473db0723b70d..b935d7bc4ea99dc4b2c4430f777fd9332930b716 100644
--- a/bsp/x1000/rtconfig.py
+++ b/bsp/x1000/rtconfig.py
@@ -12,7 +12,7 @@ if  CROSS_TOOL == 'gcc':
     PLATFORM    = 'gcc'
     EXEC_PATH   = r'E:\work\env\tools\gnu_gcc\mips_gcc\mips-2016.05\bin'
 else:
-    print 'Please make sure your toolchains is GNU GCC!'
+    print('Please make sure your toolchains is GNU GCC!')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/x86/rtconfig.py b/bsp/x86/rtconfig.py
index c602315d0614cfff1893eeec18440dbc902b7ca0..b833f4de49f8625cb4e1d5918d05704e52ac49f8 100644
--- a/bsp/x86/rtconfig.py
+++ b/bsp/x86/rtconfig.py
@@ -15,14 +15,14 @@ if  CROSS_TOOL == 'gcc':
 	PLATFORM 	= 'gcc'
 	EXEC_PATH 	= 'E:/Program Files/CodeSourcery/Sourcery_CodeBench_Lite_for_IA32_ELF/bin'
 elif CROSS_TOOL == 'keil':
-    print '================ERROR============================'
-    print 'Not support keil yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support keil yet!')
+    print('=================================================')
     exit(0)
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support iar yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support iar yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/bsp/zynq7000/rtconfig.py b/bsp/zynq7000/rtconfig.py
index 45889fb7a5bf221b4dd4e0af17b066aef1346811..33e6442073367e319fb46564d6efcea3d649889a 100644
--- a/bsp/zynq7000/rtconfig.py
+++ b/bsp/zynq7000/rtconfig.py
@@ -15,9 +15,9 @@ elif CROSS_TOOL == 'keil':
     PLATFORM 	= 'armcc'
     EXEC_PATH 	= 'C:/Keil'
 elif CROSS_TOOL == 'iar':
-    print '================ERROR============================'
-    print 'Not support IAR yet!'
-    print '================================================='
+    print('================ERROR============================')
+    print('Not support IAR yet!')
+    print('=================================================')
     exit(0)
 
 if os.getenv('RTT_EXEC_PATH'):
diff --git a/components/dfs/filesystems/romfs/mkromfs.py b/components/dfs/filesystems/romfs/mkromfs.py
index 9917cf85b9594d2850c3a3f6954ce46cd10e4408..f3c12876d2624550d82a2f130adfe9005c1cd8f7 100644
--- a/components/dfs/filesystems/romfs/mkromfs.py
+++ b/components/dfs/filesystems/romfs/mkromfs.py
@@ -50,7 +50,7 @@ class File(object):
         return bytes(self._data)
 
     def dump(self, indent=0):
-        print '%s%s' % (' ' * indent, self._name)
+        print('%s%s' % (' ' * indent, self._name))
 
 class Folder(object):
     bin_fmt = struct.Struct('IIII')
@@ -108,7 +108,7 @@ class Folder(object):
                 c.sort()
 
     def dump(self, indent=0):
-        print '%s%s' % (' ' * indent, self._name)
+        print('%s%s' % (' ' * indent, self._name))
         for c in self._children:
             c.dump(indent + 1)