style: polish the result print style in README.cn and train.py

05.recommender_system/README.cn.md

@@ -215,6 +215,7 @@ print "User %s rates Movie %s with Score %s"%(user_info[uid], movie_info[mov_id]
 
 
 ```python
+from __future__ import print_function
 import math
 import sys
 import numpy as np
@@ -508,6 +509,11 @@ results = inferencer.infer(
         'movie_title': movie_title
     },
     return_numpy=False)
+
+predict_rating = np.array(results[0])
+print("Predict Rating of user id 1 on movie \"" + infer_movie_name + "\" is " + str(predict_rating[0][0]))
+print("Actual Rating of user id 1 on movie \"" + infer_movie_name + "\" is 4.")
+
 ```
 
 ## 总结

05.recommender_system/README.md

@@ -185,6 +185,7 @@ After issuing a command `python train.py`, training will start immediately. The
 
 Our program starts with importing necessary packages and initializing some global variables:
 ```python
+from __future__ import print_function
 import math
 import sys
 import numpy as np

05.recommender_system/index.cn.html

@@ -257,6 +257,7 @@ print "User %s rates Movie %s with Score %s"%(user_info[uid], movie_info[mov_id]
 
 
 ```python
+from __future__ import print_function
 import math
 import sys
 import numpy as np
@@ -550,6 +551,11 @@ results = inferencer.infer(
         'movie_title': movie_title
     },
     return_numpy=False)
+
+predict_rating = np.array(results[0])
+print("Predict Rating of user id 1 on movie \"" + infer_movie_name + "\" is " + str(predict_rating[0][0]))
+print("Actual Rating of user id 1 on movie \"" + infer_movie_name + "\" is 4.")
+
 ```
 
 ## 总结

05.recommender_system/index.html

@@ -227,6 +227,7 @@ After issuing a command `python train.py`, training will start immediately. The
 
 Our program starts with importing necessary packages and initializing some global variables:
 ```python
+from __future__ import print_function
 import math
 import sys
 import numpy as np

05.recommender_system/train.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import print_function
 import math
 import sys
 import numpy as np
@@ -233,7 +234,11 @@ def infer(use_cuda, inference_program, params_dirname):
         },
         return_numpy=False)
 
-    print("infer results: ", np.array(results[0]))
+    predict_rating = np.array(results[0])
+    print("Predict Rating of user id 1 on movie \"" + infer_movie_name +
+          "\" is " + str(predict_rating[0][0]))
+    print("Actual Rating of user id 1 on movie \"" + infer_movie_name +
+          "\" is 4.")
 
 
 def main(use_cuda):