优化Python第3章代码+fix1

data/1.python初阶/3.进阶语法/10.字符编码与解码/encode.json

 {
-  "source": "encode.py",
+  "source": "encode.md",
   "depends": [],
   "exercise_id": 107,
   "type": "code_options",

data/1.python初阶/3.进阶语法/2.三元表达式/triple01.json

 {
-  "source": "triple01.py",
+  "source": "triple01.md",
   "depends": [],
   "exercise_id": 215,
   "type": "code_options",

data/1.python初阶/3.进阶语法/2.三元表达式/triple02.json

 {
-  "source": "triple02.py",
+  "source": "triple02.md",
   "depends": [],
   "exercise_id": 203,
   "type": "code_options",

data/1.python初阶/3.进阶语法/3.断言/assert.json

 {
-  "source": "assert.py",
+  "source": "assert.md",
   "depends": [],
   "exercise_id": 110,
   "type": "code_options",

data/1.python初阶/3.进阶语法/4.with-as/enter_exit.json

 {
-  "source": "enter_exit.py",
+  "source": "enter_exit.md",
   "depends": [],
   "exercise_id": 178,
   "type": "code_options",

data/1.python初阶/3.进阶语法/4.with-as/withas.json

 {
-  "source": "withas.py",
+  "source": "withas.md",
   "depends": [],
   "exercise_id": 118,
   "type": "code_options",

data/1.python初阶/3.进阶语法/5.异常捕获预处理/try01.json

 {
-  "source": "try01.py",
+  "source": "try01.md",
   "depends": [],
   "exercise_id": 237,
   "type": "code_options",

data/1.python初阶/3.进阶语法/6.字符串方法/str.json

 {
-  "source": "str.py",
+  "source": "str.md",
   "depends": [],
   "exercise_id": 112,
   "type": "code_options",

data/1.python初阶/3.进阶语法/7.lambda函数/lambda.json

 {
-  "source": "lambda.py",
+  "source": "lambda.md",
   "depends": [],
   "exercise_id": 108,
   "type": "code_options",

data/1.python初阶/3.进阶语法/8.文件/file_basic.json

 {
-  "source": "file_basic.py",
+  "source": "file_basic.md",
   "depends": [],
   "exercise_id": 199,
   "type": "code_options",

data/1.python初阶/3.进阶语法/8.文件/file_piece_sha256.json

 {
-  "source": "file_piece_sha256.py",
+  "source": "file_piece_sha256.md",
   "depends": [],
   "exercise_id": 213,
   "type": "code_options",

data/1.python初阶/3.进阶语法/9.常用标准库/std01.json

 {
-  "source": "std01.py",
+  "source": "std01.md",
   "depends": [],
   "exercise_id": 222,
   "type": "code_options",

data/1.python初阶/3.进阶语法/9.常用标准库/std02.json

 {
-  "source": "std02.py",
+  "source": "std02.md",
   "depends": [],
   "exercise_id": 196,
   "type": "code_options",

main.py

@@ -6,8 +6,8 @@ import os
 import re
 
 if __name__ == '__main__':
-    walker = TreeWalker("data", "python", "python")
-    walker.walk()
+    # walker = TreeWalker("data", "python", "python")
+    # walker.walk()
 
-    # md = MDWalker('data/1.python初阶/3.进阶语法')
-    # md.walk()
+    md = MDWalker('data/1.python初阶/3.进阶语法')
+    md.walk()

src/md.py

@@ -91,7 +91,11 @@ class MDWalker():
                     print(json_file)
 
                     if os.path.exists(md_file):
+                        j = load_json(json_file)
+                        j['source'] = j['source'].replace('.py', '.md')
+                        dump_json(json_file, j, True, True)
                         continue
+
                     md = []
                     self.emit_head(md, py)
                     self.emit_template(md, py)
@@ -107,6 +111,7 @@ class MDWalker():
                             del j['multiline']
                         j['author'] = py['author']
                         j['notebook_enable'] = True
+                        j['source'] = j['source'].replace('.py', '.md')
                         dump_json(json_file, j, True, True)
 
     def emit_head(self, md, py):