{"id":1151210,"date":"2025-01-13T17:10:57","date_gmt":"2025-01-13T09:10:57","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1151210.html"},"modified":"2025-01-13T17:11:00","modified_gmt":"2025-01-13T09:11:00","slug":"python%e7%a8%8b%e5%ba%8f%e5%a6%82%e4%bd%95%e6%89%93%e8%a1%a5%e4%b8%81","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1151210.html","title":{"rendered":"Python\u7a0b\u5e8f\u5982\u4f55\u6253\u8865\u4e01"},"content":{"rendered":"

\"Python\u7a0b\u5e8f\u5982\u4f55\u6253\u8865\u4e01\"<\/p>\n

\u5728Python\u7a0b\u5e8f\u4e2d\u6253\u8865\u4e01\u901a\u5e38\u6d89\u53ca\u4fee\u6539\u6216\u66ff\u6362\u73b0\u6709\u4ee3\u7801\uff0c\u4ee5\u4fee\u590d\u9519\u8bef\u3001\u6dfb\u52a0\u529f\u80fd\u6216\u4f18\u5316\u6027\u80fd\u3002\u6253\u8865\u4e01\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4fee\u6539\u6e90\u4ee3\u7801\u3001\u4f7f\u7528\u7334\u5b50\u8865\u4e01\uff08monkey patching\uff09\u3001\u5229\u7528\u88c5\u9970\u5668\u548c\u4f7f\u7528\u8865\u4e01\u5e93\uff08\u5982unittest.mock\uff09<\/strong>\u3002\u5176\u4e2d\uff0c\u7334\u5b50\u8865\u4e01\uff08monkey patching\uff09<\/strong>\u662f\u4e00\u79cd\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u5c24\u5176\u662f\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u4fee\u6539\u7c7b\u6216\u6a21\u5757\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4fee\u6539\u6e90\u4ee3\u7801<\/h3>\n<\/p>\n

\u4fee\u6539\u6e90\u4ee3\u7801\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u6709\u6743\u8bbf\u95ee\u548c\u66f4\u6539\u4ee3\u7801\u5e93\u7684\u60c5\u51b5\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u76f4\u89c2\u3001\u7b80\u5355\uff0c\u7f3a\u70b9\u662f\u9700\u8981\u91cd\u65b0\u90e8\u7f72\u4ee3\u7801\uff0c\u4e14\u4e0d\u9002\u7528\u4e8e\u7b2c\u4e09\u65b9\u5e93\u6216\u5728\u8fd0\u884c\u65f6\u9700\u8981\u52a8\u6001\u4fee\u6539\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n

# \u539f\u59cb\u4ee3\u7801<\/p>\n
def add(a, b):<\/p>\n
    return a + b<\/p>\n
\u4fee\u6539\u540e\u7684\u4ee3\u7801<\/strong><\/h2>\n
def add(a, b):<\/p>\n
    if isinstance(a, int) and isinstance(b, int):<\/p>\n
        return a + b<\/p>\n
    else:<\/p>\n
        rAI<\/a>se ValueError("Both arguments must be integers")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u7334\u5b50\u8865\u4e01\uff08Monkey Patching\uff09<\/h3>\n<\/p>\n
\u7334\u5b50\u8865\u4e01\u662f\u4e00\u79cd\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u4fee\u6539\u7c7b\u6216\u6a21\u5757\u7684\u65b9\u6cd5\u3002\u5b83\u975e\u5e38\u5f3a\u5927\uff0c\u4f46\u4e5f\u5bb9\u6613\u5f15\u8d77\u7ef4\u62a4\u95ee\u9898\uff0c\u56e0\u4e3a\u5b83\u6539\u53d8\u4e86\u4ee3\u7801\u7684\u9884\u671f\u884c\u4e3a\u3002<\/p>\n<\/p>\n
# \u539f\u59cb\u4ee3\u7801<\/p>\n
class MyClass:<\/p>\n
    def greet(self):<\/p>\n
        print("Hello, World!")<\/p>\n
\u4f7f\u7528\u7334\u5b50\u8865\u4e01<\/strong><\/h2>\n
def new_greet(self):<\/p>\n
    print("Hello, Python!")<\/p>\n
MyClass.greet = new_greet<\/p>\n
\u6d4b\u8bd5\u7334\u5b50\u8865\u4e01<\/strong><\/h2>\n
obj = MyClass()<\/p>\n
obj.greet()  # \u8f93\u51fa: Hello, Python!<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u5229\u7528\u88c5\u9970\u5668<\/h3>\n<\/p>\n
\u88c5\u9970\u5668\u662f\u4e00\u79cd\u66f4\u4f18\u96c5\u548c\u53ef\u7ef4\u62a4\u7684\u65b9\u6cd5\u6765\u6253\u8865\u4e01\u3002\u5b83\u4eec\u5141\u8bb8\u4f60\u5728\u4e0d\u4fee\u6539\u539f\u59cb\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u589e\u5f3a\u6216\u66ff\u6362\u51fd\u6570\u7684\u884c\u4e3a\u3002<\/p>\n<\/p>\n
# \u539f\u59cb\u4ee3\u7801<\/p>\n
def add(a, b):<\/p>\n
    return a + b<\/p>\n
\u88c5\u9970\u5668<\/strong><\/h2>\n
def validate(func):<\/p>\n
    def wrapper(a, b):<\/p>\n
        if isinstance(a, int) and isinstance(b, int):<\/p>\n
            return func(a, b)<\/p>\n
        else:<\/p>\n
            raise ValueError("Both arguments must be integers")<\/p>\n
    return wrapper<\/p>\n
\u5e94\u7528\u88c5\u9970\u5668<\/strong><\/h2>\n
add = validate(add)<\/p>\n
\u6d4b\u8bd5\u88c5\u9970\u5668<\/strong><\/h2>\n
print(add(2, 3))  # \u8f93\u51fa: 5<\/p>\n
print(add(2, '3'))  # \u629b\u51fa ValueError<\/strong><\/h2>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u4f7f\u7528\u8865\u4e01\u5e93\uff08\u5982unittest.mock\uff09<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u5355\u5143\u6d4b\u8bd5\uff0cPython\u7684unittest.mock\u5e93\u63d0\u4f9b\u4e86\u4e00\u79cd\u5f3a\u5927\u7684\u65b9\u6cd5\u6765\u6253\u8865\u4e01\u3002\u5b83\u5141\u8bb8\u4f60\u5728\u6d4b\u8bd5\u671f\u95f4\u4e34\u65f6\u66ff\u6362\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
from unittest.mock import patch<\/p>\n
\u539f\u59cb\u4ee3\u7801<\/strong><\/h2>\n
def fetch_data():<\/p>\n
    import requests<\/p>\n
    response = requests.get("http:\/\/example.com\/api\/data")<\/p>\n
    return response.json()<\/p>\n
\u4f7f\u7528\u8865\u4e01<\/strong><\/h2>\n
with patch("requests.get") as mock_get:<\/p>\n
    mock_get.return_value.json.return_value = {"key": "value"}<\/p>\n
    data = fetch_data()<\/p>\n
    print(data)  # \u8f93\u51fa: {'key': 'value'}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u6253\u8865\u4e01\u5728Python\u5f00\u53d1\u4e2d\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u6280\u80fd\uff0c\u9002\u7528\u4e8e\u4fee\u590d\u9519\u8bef\u3001\u6dfb\u52a0\u65b0\u529f\u80fd\u548c\u4f18\u5316\u6027\u80fd\u3002\u4fee\u6539\u6e90\u4ee3\u7801\u3001\u7334\u5b50\u8865\u4e01\u3001\u5229\u7528\u88c5\u9970\u5668\u548c\u4f7f\u7528\u8865\u4e01\u5e93<\/strong>\u662f\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u70b9\u548c\u9002\u7528\u573a\u666f\u3002\u5bf9\u4e8e\u9700\u8981\u52a8\u6001\u4fee\u6539\u884c\u4e3a\u7684\u60c5\u51b5\uff0c\u7334\u5b50\u8865\u4e01\u548c\u88c5\u9970\u5668\u662f\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u800c\u8865\u4e01\u5e93\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\u5219\u975e\u5e38\u5f3a\u5927\u3002\u4e86\u89e3\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u6700\u5408\u9002\u7684\u65b9\u6848\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u66f4\u9ad8\u6548\u5730\u7ef4\u62a4\u548c\u6539\u8fdbPython\u4ee3\u7801\u3002<\/p>\n<\/p>\n
\u516d\u3001\u8be6\u7ec6\u63a2\u8ba8\u7334\u5b50\u8865\u4e01<\/h3>\n<\/p>\n
\u7334\u5b50\u8865\u4e01\uff08monkey patching\uff09\u662f\u4e00\u79cd\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u4fee\u6539\u6a21\u5757\u6216\u7c7b\u7684\u65b9\u6cd5\u3002\u867d\u7136\u8fd9\u79cd\u6280\u672f\u975e\u5e38\u5f3a\u5927\uff0c\u4f46\u4e5f\u5bb9\u6613\u5f15\u53d1\u7ef4\u62a4\u95ee\u9898\uff0c\u56e0\u4e3a\u5b83\u6539\u53d8\u4e86\u4ee3\u7801\u7684\u9884\u671f\u884c\u4e3a\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u63a2\u8ba8\u7334\u5b50\u8865\u4e01\u7684\u5e94\u7528\u573a\u666f\u3001\u4f18\u7f3a\u70b9\u53ca\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n
1. \u5e94\u7528\u573a\u666f<\/h4>\n<\/p>\n
\u7334\u5b50\u8865\u4e01\u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<\/p>\n
    \n
  • \u4fee\u590d\u7b2c\u4e09\u65b9\u5e93\u4e2d\u7684\u9519\u8bef<\/strong>\uff1a\u5f53\u4f60\u65e0\u6cd5\u76f4\u63a5\u4fee\u6539\u7b2c\u4e09\u65b9\u5e93\u7684\u6e90\u4ee3\u7801\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u7334\u5b50\u8865\u4e01\u6765\u4fee\u590d\u9519\u8bef\u3002<\/li>\n
  • \u6dfb\u52a0\u6216\u4fee\u6539\u529f\u80fd<\/strong>\uff1a\u5728\u4e0d\u5f71\u54cd\u539f\u6709\u4ee3\u7801\u7ed3\u6784\u7684\u60c5\u51b5\u4e0b\uff0c\u6dfb\u52a0\u6216\u4fee\u6539\u529f\u80fd\u3002<\/li>\n
  • \u6d4b\u8bd5<\/strong>\uff1a\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u4e34\u65f6\u66ff\u6362\u67d0\u4e9b\u65b9\u6cd5\u6216\u7c7b\u7684\u5b9e\u73b0\uff0c\u4ee5\u4fbf\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\u3002<\/li>\n<\/ul>\n
    2. \u4f18\u7f3a\u70b9<\/h4>\n<\/p>\n
    \u4f18\u70b9<\/strong>\uff1a<\/p>\n<\/p>\n
      \n
    • \u7075\u6d3b\u6027\u9ad8<\/strong>\uff1a\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u4fee\u6539\u4ee3\u7801\u3002<\/li>\n
    • \u65e0\u9700\u4fee\u6539\u6e90\u4ee3\u7801<\/strong>\uff1a\u9002\u7528\u4e8e\u65e0\u6cd5\u8bbf\u95ee\u6216\u4e0d\u4fbf\u4fee\u6539\u6e90\u4ee3\u7801\u7684\u60c5\u51b5\u3002<\/li>\n<\/ul>\n
      \u7f3a\u70b9<\/strong>\uff1a<\/p>\n<\/p>\n
        \n
      • \u7ef4\u62a4\u56f0\u96be<\/strong>\uff1a\u7334\u5b50\u8865\u4e01\u6539\u53d8\u4e86\u4ee3\u7801\u7684\u9884\u671f\u884c\u4e3a\uff0c\u53ef\u80fd\u5bfc\u81f4\u7ef4\u62a4\u56f0\u96be\u3002<\/li>\n
      • \u6f5c\u5728\u51b2\u7a81<\/strong>\uff1a\u591a\u4e2a\u7334\u5b50\u8865\u4e01\u53ef\u80fd\u4f1a\u4e92\u76f8\u51b2\u7a81\uff0c\u5bfc\u81f4\u4e0d\u53ef\u9884\u89c1\u7684\u95ee\u9898\u3002<\/li>\n
      • \u53ef\u8bfb\u6027\u5dee<\/strong>\uff1a\u4ee3\u7801\u7684\u884c\u4e3a\u5728\u8fd0\u884c\u65f6\u624d\u786e\u5b9a\uff0c\u964d\u4f4e\u4e86\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002<\/li>\n<\/ul>\n
        3. \u6700\u4f73\u5b9e\u8df5<\/h4>\n<\/p>\n
        \u4e3a\u4e86\u6709\u6548\u5730\u4f7f\u7528\u7334\u5b50\u8865\u4e01\uff0c\u5e76\u5c3d\u91cf\u51cf\u5c11\u5176\u5e26\u6765\u7684\u95ee\u9898\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<\/p>\n
          \n
        • \u5c3d\u91cf\u51cf\u5c11\u4f7f\u7528<\/strong>\uff1a\u53ea\u6709\u5728\u65e0\u6cd5\u901a\u8fc7\u5176\u4ed6\u65b9\u5f0f\u89e3\u51b3\u95ee\u9898\u65f6\uff0c\u624d\u4f7f\u7528\u7334\u5b50\u8865\u4e01\u3002<\/li>\n
        • \u4fdd\u6301\u8865\u4e01\u7b80\u6d01<\/strong>\uff1a\u8865\u4e01\u4ee3\u7801\u5e94\u5c3d\u91cf\u7b80\u6d01\u660e\u4e86\uff0c\u4ee5\u4fbf\u540e\u7eed\u7ef4\u62a4\u3002<\/li>\n
        • \u8bb0\u5f55\u8865\u4e01<\/strong>\uff1a\u5728\u4ee3\u7801\u4e2d\u6dfb\u52a0\u6ce8\u91ca\uff0c\u8be6\u7ec6\u8bf4\u660e\u4e3a\u4ec0\u4e48\u9700\u8981\u8865\u4e01\uff0c\u4ee5\u53ca\u8865\u4e01\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/li>\n
        • \u6d4b\u8bd5<\/strong>\uff1a\u4e3a\u8865\u4e01\u4ee3\u7801\u7f16\u5199\u5355\u5143\u6d4b\u8bd5\uff0c\u786e\u4fdd\u5176\u6b63\u786e\u6027\u548c\u7a33\u5b9a\u6027\u3002<\/li>\n<\/ul>\n
          # \u539f\u59cb\u4ee3\u7801<\/p>\n
          class MyClass:<\/p>\n
              def greet(self):<\/p>\n
                  print("Hello, World!")<\/p>\n
          \u4f7f\u7528\u7334\u5b50\u8865\u4e01<\/strong><\/h2>\n
          def new_greet(self):<\/p>\n
              print("Hello, Python!")<\/p>\n
          MyClass.greet = new_greet<\/p>\n
          \u6d4b\u8bd5\u7334\u5b50\u8865\u4e01<\/strong><\/h2>\n
          obj = MyClass()<\/p>\n
          obj.greet()  # \u8f93\u51fa: Hello, Python!<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u5728\u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u52a8\u6001\u4fee\u6539\u4e86MyClass<\/code>\u7c7b\u7684greet<\/code>\u65b9\u6cd5\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u5f3a\u5927\uff0c\u4f46\u4e5f\u9700\u8981\u8c28\u614e\u4f7f\u7528\uff0c\u4ee5\u907f\u514d\u6f5c\u5728\u7684\u95ee\u9898\u3002<\/p>\n<\/p>\n
          \u4e03\u3001\u8be6\u7ec6\u63a2\u8ba8\u88c5\u9970\u5668<\/h3>\n<\/p>\n
          \u88c5\u9970\u5668\u662f\u4e00\u79cd\u66f4\u4f18\u96c5\u548c\u53ef\u7ef4\u62a4\u7684\u65b9\u6cd5\u6765\u6253\u8865\u4e01\u3002\u5b83\u4eec\u5141\u8bb8\u4f60\u5728\u4e0d\u4fee\u6539\u539f\u59cb\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u589e\u5f3a\u6216\u66ff\u6362\u51fd\u6570\u7684\u884c\u4e3a\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u63a2\u8ba8\u88c5\u9970\u5668\u7684\u5de5\u4f5c\u539f\u7406\u3001\u5e94\u7528\u573a\u666f\u53ca\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n
          1. \u5de5\u4f5c\u539f\u7406<\/h4>\n<\/p>\n
          \u88c5\u9970\u5668\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u9ad8\u9636\u51fd\u6570\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u51fd\u6570\u3002\u8fd9\u4e2a\u65b0\u7684\u51fd\u6570\u901a\u5e38\u4f1a\u5728\u8c03\u7528\u539f\u59cb\u51fd\u6570\u4e4b\u524d\u6216\u4e4b\u540e\u6267\u884c\u4e00\u4e9b\u989d\u5916\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
          def decorator(func):<\/p>\n
              def wrapper(*args, kwargs):<\/p>\n
                  # \u989d\u5916\u64cd\u4f5c<\/p>\n
                  result = func(*args, kwargs)<\/p>\n
                  # \u989d\u5916\u64cd\u4f5c<\/p>\n
                  return result<\/p>\n
              return wrapper<\/p>\n
          @decorator<\/p>\n
          def my_function():<\/p>\n
              pass<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          2. \u5e94\u7528\u573a\u666f<\/h4>\n<\/p>\n
          \u88c5\u9970\u5668\u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<\/p>\n
            \n
          • \u65e5\u5fd7\u8bb0\u5f55<\/strong>\uff1a\u5728\u51fd\u6570\u8c03\u7528\u524d\u540e\u8bb0\u5f55\u65e5\u5fd7\u3002<\/li>\n
          • \u6743\u9650\u68c0\u67e5<\/strong>\uff1a\u5728\u51fd\u6570\u6267\u884c\u524d\u68c0\u67e5\u7528\u6237\u6743\u9650\u3002<\/li>\n
          • \u7f13\u5b58<\/strong>\uff1a\u7f13\u5b58\u51fd\u6570\u7684\u8fd4\u56de\u503c\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n
          • \u8f93\u5165\u9a8c\u8bc1<\/strong>\uff1a\u5728\u51fd\u6570\u6267\u884c\u524d\u9a8c\u8bc1\u53c2\u6570\u3002<\/li>\n<\/ul>\n
            3. \u6700\u4f73\u5b9e\u8df5<\/h4>\n<\/p>\n
            \u4e3a\u4e86\u6709\u6548\u5730\u4f7f\u7528\u88c5\u9970\u5668\uff0c\u5e76\u5145\u5206\u53d1\u6325\u5176\u4f18\u52bf\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<\/p>\n
              \n
            • \u4fdd\u6301\u88c5\u9970\u5668\u7b80\u5355<\/strong>\uff1a\u88c5\u9970\u5668\u7684\u903b\u8f91\u5e94\u5c3d\u91cf\u7b80\u5355\u660e\u4e86\uff0c\u4ee5\u4fbf\u540e\u7eed\u7ef4\u62a4\u3002<\/li>\n
            • \u590d\u7528\u88c5\u9970\u5668<\/strong>\uff1a\u5c06\u5e38\u7528\u7684\u88c5\u9970\u5668\u63d0\u53d6\u51fa\u6765\uff0c\u653e\u5728\u5355\u72ec\u7684\u6a21\u5757\u4e2d\uff0c\u4ee5\u4fbf\u590d\u7528\u3002<\/li>\n
            • \u7f16\u5199\u6d4b\u8bd5<\/strong>\uff1a\u4e3a\u88c5\u9970\u5668\u7f16\u5199\u5355\u5143\u6d4b\u8bd5\uff0c\u786e\u4fdd\u5176\u6b63\u786e\u6027\u548c\u7a33\u5b9a\u6027\u3002<\/li>\n
            • \u4f7f\u7528\u5185\u7f6e\u88c5\u9970\u5668<\/strong>\uff1aPython\u5185\u7f6e\u4e86\u8bb8\u591a\u5b9e\u7528\u7684\u88c5\u9970\u5668\uff0c\u5982@staticmethod<\/code>\u3001@classmethod<\/code>\u548c@property<\/code>\uff0c\u5e94\u5145\u5206\u5229\u7528\u8fd9\u4e9b\u5185\u7f6e\u88c5\u9970\u5668\u3002<\/li>\n<\/ul>\n
              # \u539f\u59cb\u4ee3\u7801<\/p>\n
              def add(a, b):<\/p>\n
                  return a + b<\/p>\n
              \u88c5\u9970\u5668<\/strong><\/h2>\n
              def validate(func):<\/p>\n
                  def wrapper(a, b):<\/p>\n
                      if isinstance(a, int) and isinstance(b, int):<\/p>\n
                          return func(a, b)<\/p>\n
                      else:<\/p>\n
                          raise ValueError("Both arguments must be integers")<\/p>\n
                  return wrapper<\/p>\n
              \u5e94\u7528\u88c5\u9970\u5668<\/strong><\/h2>\n
              add = validate(add)<\/p>\n
              \u6d4b\u8bd5\u88c5\u9970\u5668<\/strong><\/h2>\n
              print(add(2, 3))  # \u8f93\u51fa: 5<\/p>\n
              print(add(2, '3'))  # \u629b\u51fa ValueError<\/strong><\/h2>\n
              <\/code><\/pre>\n<\/p>\n
              \u5728\u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u88c5\u9970\u5668\u5bf9add<\/code>\u51fd\u6570\u8fdb\u884c\u4e86\u53c2\u6570\u9a8c\u8bc1\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u4f18\u96c5\uff0c\u800c\u4e14\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n<\/p>\n
              \u516b\u3001\u8be6\u7ec6\u63a2\u8ba8\u4f7f\u7528\u8865\u4e01\u5e93\uff08\u5982unittest.mock\uff09<\/h3>\n<\/p>\n
              \u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\uff0c\u4f7f\u7528\u8865\u4e01\u5e93\uff08\u5982unittest.mock\uff09\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4e34\u65f6\u66ff\u6362\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8865\u4e01\u5e93\u7684\u5de5\u4f5c\u539f\u7406\u3001\u5e94\u7528\u573a\u666f\u53ca\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n
              1. \u5de5\u4f5c\u539f\u7406<\/h4>\n<\/p>\n
              \u8865\u4e01\u5e93\u901a\u8fc7\u52a8\u6001\u66ff\u6362\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\uff0c\u5b9e\u73b0\u5bf9\u4ee3\u7801\u884c\u4e3a\u7684\u63a7\u5236\u3002\u5e38\u7528\u7684\u64cd\u4f5c\u5305\u62ec\uff1a\u66ff\u6362\u51fd\u6570\u3001\u6a21\u62df\u5bf9\u8c61\u3001\u8bbe\u7f6e\u8fd4\u56de\u503c\u7b49\u3002<\/p>\n<\/p>\n
              from unittest.mock import patch<\/p>\n
              \u539f\u59cb\u4ee3\u7801<\/strong><\/h2>\n
              def fetch_data():<\/p>\n
                  import requests<\/p>\n
                  response = requests.get("http:\/\/example.com\/api\/data")<\/p>\n
                  return response.json()<\/p>\n
              \u4f7f\u7528\u8865\u4e01<\/strong><\/h2>\n
              with patch("requests.get") as mock_get:<\/p>\n
                  mock_get.return_value.json.return_value = {"key": "value"}<\/p>\n
                  data = fetch_data()<\/p>\n
                  print(data)  # \u8f93\u51fa: {'key': 'value'}<\/p>\n
              <\/code><\/pre>\n<\/p>\n
              2. \u5e94\u7528\u573a\u666f<\/h4>\n<\/p>\n
              \u8865\u4e01\u5e93\u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<\/p>\n
                \n
              • \u9694\u79bb\u6d4b\u8bd5<\/strong>\uff1a\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\u9694\u79bb\u5f85\u6d4b\u4ee3\u7801\uff0c\u907f\u514d\u4f9d\u8d56\u5916\u90e8\u73af\u5883\u3002<\/li>\n
              • \u6a21\u62df\u4f9d\u8d56<\/strong>\uff1a\u6a21\u62df\u4f9d\u8d56\u7684\u884c\u4e3a\uff0c\u5982\u6570\u636e\u5e93\u8fde\u63a5\u3001\u7f51\u7edc\u8bf7\u6c42\u7b49\u3002<\/li>\n
              • \u63a7\u5236\u8fd4\u56de\u503c<\/strong>\uff1a\u63a7\u5236\u51fd\u6570\u7684\u8fd4\u56de\u503c\uff0c\u4ee5\u4fbf\u6d4b\u8bd5\u4e0d\u540c\u7684\u5206\u652f\u548c\u5f02\u5e38\u60c5\u51b5\u3002<\/li>\n<\/ul>\n
                3. \u6700\u4f73\u5b9e\u8df5<\/h4>\n<\/p>\n
                \u4e3a\u4e86\u6709\u6548\u5730\u4f7f\u7528\u8865\u4e01\u5e93\uff0c\u5e76\u5145\u5206\u53d1\u6325\u5176\u4f18\u52bf\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<\/p>\n
                  \n
                • \u660e\u786e\u8865\u4e01\u8303\u56f4<\/strong>\uff1a\u5c3d\u91cf\u7f29\u5c0f\u8865\u4e01\u7684\u4f5c\u7528\u8303\u56f4\uff0c\u901a\u5e38\u4f7f\u7528with<\/code>\u8bed\u53e5\u6216\u88c5\u9970\u5668\u3002<\/li>\n
                • \u4fdd\u6301\u8865\u4e01\u7b80\u6d01<\/strong>\uff1a\u8865\u4e01\u7684\u5b9e\u73b0\u5e94\u5c3d\u91cf\u7b80\u6d01\u660e\u4e86\uff0c\u4ee5\u4fbf\u540e\u7eed\u7ef4\u62a4\u3002<\/li>\n
                • \u7f16\u5199\u6d4b\u8bd5<\/strong>\uff1a\u4e3a\u8865\u4e01\u4ee3\u7801\u7f16\u5199\u5355\u5143\u6d4b\u8bd5\uff0c\u786e\u4fdd\u5176\u6b63\u786e\u6027\u548c\u7a33\u5b9a\u6027\u3002<\/li>\n
                • \u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/strong>\uff1a\u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u6216\u88c5\u9970\u5668\u6765\u7ba1\u7406\u8865\u4e01\uff0c\u4ee5\u786e\u4fdd\u8865\u4e01\u5728\u6d4b\u8bd5\u7ed3\u675f\u540e\u88ab\u6b63\u786e\u8fd8\u539f\u3002<\/li>\n<\/ul>\n
                  from unittest.mock import patch<\/p>\n
                  \u539f\u59cb\u4ee3\u7801<\/strong><\/h2>\n
                  def fetch_data():<\/p>\n
                      import requests<\/p>\n
                      response = requests.get("http:\/\/example.com\/api\/data")<\/p>\n
                      return response.json()<\/p>\n
                  \u4f7f\u7528\u88c5\u9970\u5668<\/strong><\/h2>\n
                  @patch("requests.get")<\/p>\n
                  def test_fetch_data(mock_get):<\/p>\n
                      mock_get.return_value.json.return_value = {"key": "value"}<\/p>\n
                      data = fetch_data()<\/p>\n
                      assert data == {"key": "value"}<\/p>\n
                  \u8fd0\u884c\u6d4b\u8bd5<\/strong><\/h2>\n
                  test_fetch_data()<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                  \u5728\u4ee5\u4e0a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528unittest.mock<\/code>\u5e93\u5bf9requests.get<\/code>\u65b9\u6cd5\u8fdb\u884c\u4e86\u8865\u4e01\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u7075\u6d3b\uff0c\u800c\u4e14\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n<\/p>\n
                  \u4e5d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
                  \u5728Python\u7a0b\u5e8f\u4e2d\u6253\u8865\u4e01\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u6280\u80fd\uff0c\u9002\u7528\u4e8e\u4fee\u590d\u9519\u8bef\u3001\u6dfb\u52a0\u65b0\u529f\u80fd\u548c\u4f18\u5316\u6027\u80fd\u3002\u4fee\u6539\u6e90\u4ee3\u7801\u3001\u7334\u5b50\u8865\u4e01\u3001\u5229\u7528\u88c5\u9970\u5668\u548c\u4f7f\u7528\u8865\u4e01\u5e93<\/strong>\u662f\u5e38\u7528\u7684\u65b9\u6cd5\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u70b9\u548c\u9002\u7528\u573a\u666f\u3002\u5bf9\u4e8e\u9700\u8981\u52a8\u6001\u4fee\u6539\u884c\u4e3a\u7684\u60c5\u51b5\uff0c\u7334\u5b50\u8865\u4e01\u548c\u88c5\u9970\u5668\u662f\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u800c\u8865\u4e01\u5e93\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\u5219\u975e\u5e38\u5f3a\u5927\u3002\u4e86\u89e3\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u6700\u5408\u9002\u7684\u65b9\u6848\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u66f4\u9ad8\u6548\u5730\u7ef4\u62a4\u548c\u6539\u8fdbPython\u4ee3\u7801\u3002<\/p>\n<\/p>\n
                  \u901a\u8fc7\u8be6\u7ec6\u63a2\u8ba8\u7334\u5b50\u8865\u4e01\u3001\u88c5\u9970\u5668\u548c\u8865\u4e01\u5e93\u7684\u5e94\u7528\u573a\u666f\u3001\u4f18\u7f3a\u70b9\u53ca\u6700\u4f73\u5b9e\u8df5\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u6280\u672f\uff0c\u4ece\u800c\u63d0\u9ad8Python\u5f00\u53d1\u7684\u8d28\u91cf\u548c\u6548\u7387\u3002\u65e0\u8bba\u662f\u5728\u4fee\u590d\u9519\u8bef\u3001\u6dfb\u52a0\u529f\u80fd\u8fd8\u662f\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\uff0c\u8fd9\u4e9b\u6280\u672f\u90fd\u80fd\u63d0\u4f9b\u5f3a\u5927\u7684\u652f\u6301\uff0c\u4f7f\u6211\u4eec\u80fd\u591f\u66f4\u7075\u6d3b\u3001\u6709\u6548\u5730\u5e94\u5bf9\u5404\u79cd\u5f00\u53d1\u6311\u6218\u3002<\/p>\n<\/p>\n
                  \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                   \u5982\u4f55\u5224\u65ad\u6211\u7684Python\u7a0b\u5e8f\u662f\u5426\u9700\u8981\u6253\u8865\u4e01\uff1f<\/strong>
                  \u5728Python\u5f00\u53d1\u4e2d\uff0c\u7a0b\u5e8f\u9700\u8981\u6253\u8865\u4e01\u7684\u4e3b\u8981\u539f\u56e0\u5305\u62ec\u53d1\u73b0\u4e86\u5b89\u5168\u6f0f\u6d1e\u3001\u4fee\u590d\u529f\u80fd\u7f3a\u9677\u6216\u63d0\u5347\u6027\u80fd\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u5b9a\u671f\u68c0\u67e5\u5b98\u65b9\u6587\u6863\u3001\u793e\u533a\u8bba\u575b\u4ee5\u53ca\u4f9d\u8d56\u5e93\u7684\u66f4\u65b0\u65e5\u5fd7\u6765\u5224\u65ad\u3002\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f\u7b2c\u4e09\u65b9\u5e93\uff0c\u786e\u4fdd\u5b9a\u671f\u5173\u6ce8\u5b83\u4eec\u7684\u53d1\u5e03\u4fe1\u606f\uff0c\u5fc5\u8981\u65f6\u66f4\u65b0\u5230\u6700\u65b0\u7248\u672c\uff0c\u4ee5\u786e\u4fdd\u7a0b\u5e8f\u7684\u5b89\u5168\u6027\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n
                  \u6253\u8865\u4e01\u540e\u5982\u4f55\u6d4b\u8bd5\u6211\u7684Python\u7a0b\u5e8f\u662f\u5426\u6b63\u5e38\u8fd0\u884c\uff1f<\/strong>
                  \u5728\u5bf9Python\u7a0b\u5e8f\u6253\u8865\u4e01\u540e\uff0c\u8fdb\u884c\u5168\u9762\u7684\u6d4b\u8bd5\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u4f7f\u7528\u5355\u5143\u6d4b\u8bd5\u6846\u67b6\uff08\u5982unittest\u6216pytest\uff09\u6765\u9a8c\u8bc1\u4ee3\u7801\u7684\u5404\u4e2a\u529f\u80fd\u662f\u5426\u6b63\u5e38\uff0c\u786e\u4fdd\u6253\u8865\u4e01\u6ca1\u6709\u5f15\u5165\u65b0\u7684\u95ee\u9898\u3002\u6b64\u5916\uff0c\u8fdb\u884c\u96c6\u6210\u6d4b\u8bd5\u548c\u7528\u6237\u6d4b\u8bd5\u4e5f\u6709\u52a9\u4e8e\u786e\u8ba4\u7a0b\u5e8f\u7684\u6574\u4f53\u6027\u80fd\u548c\u7528\u6237\u4f53\u9a8c\u672a\u53d7\u5230\u5f71\u54cd\u3002<\/p>\n
                  \u5728\u6253\u8865\u4e01\u8fc7\u7a0b\u4e2d\u9047\u5230\u9519\u8bef\uff0c\u6211\u8be5\u5982\u4f55\u5904\u7406\uff1f<\/strong>
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