fix bug

data/3.python高阶/7.高级教程/4.结构化模式匹配/match_01.json

 {
-  "source": "match_01.py",
+  "author": "huanhuilong",
+  "source": "match_01.md",
   "depends": [],
   "exercise_id": 221,
   "type": "code_options"

data/3.python高阶/7.高级教程/4.结构化模式匹配/match_01.md

+# Python 结构化模式匹配(1)
+
+Python 3.10 引入了结构化模式匹配。请使用 Python 3.10+ 版本测试本代码。
+
+## template
+
+```python
+import argparse
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('command', choices=['push', 'pull', 'commit'])
+    args = parser.parse_args()
+
+    match args.command:
+        case 'push':
+            print('pushing')
+        case 'pull':
+            print('pulling')
+        case _:
+            parser.error(f'{args.command!r} not yet implemented')
+```
+
+## 答案
+
+```python
+import argparse
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('command', choices=['push', 'pull', 'commit'])
+    args = parser.parse_args()
+
+    match args.command:
+        case 'push':
+            print('pushing')
+        case 'pull':
+            print('pulling')
+        case _:
+            parser.error(f'{args.command!r} not yet implemented')
+```
+
+## 选项
+
+### A
+
+```python
+import argparse
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('command', choices=['push', 'pull', 'commit'])
+    args = parser.parse_args()
+
+    switch args.command:
+        case 'push':
+            print('pushing')
+        case 'pull':
+            print('pulling')
+        case _:
+            parser.error(f'{args.command!r} not yet implemented')
+```
+
+### B
+
+```python
+import argparse
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('command', choices=['push', 'pull', 'commit'])
+    args = parser.parse_args()
+
+    match args.command:
+        case 'push':
+            print('pushing')
+        case 'pull':
+            print('pulling')
+        default:
+            parser.error(f'{args.command!r} not yet implemented')
+```
+
+### C
+
+```python
+import argparse
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('command', choices=['push', 'pull', 'commit'])
+    args = parser.parse_args()
+
+    match args.command:
+        if 'push':
+            print('pushing')
+        elif 'pull':
+            print('pulling')
+        else _:
+            parser.error(f'{args.command!r} not yet implemented')
+```