import logging<\/p>\nlogging.basicConfig(level=logging.INFO)<\/p>\n
def log_result_decorator(func):<\/p>\n
def wrapper(*args, kwargs):<\/p>\n
result = func(*args, kwargs)<\/p>\n
logging.info(f"Function {func.__name__} returned {result}")<\/p>\n
return result<\/p>\n
return wrapper<\/p>\n
@log_result_decorator<\/p>\n
def multiply(a, b):<\/p>\n
return a * b<\/p>\n
print(multiply(3, 4)) # \u8f93\u51fa\uff1a12\uff0c\u5e76\u8bb0\u5f55\u65e5\u5fd7\u4fe1\u606f<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u88c5\u9970\u5668\u7684\u5d4c\u5957\u548c\u7ec4\u5408<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u9700\u8981\u5bf9\u4e00\u4e2a\u51fd\u6570\u5e94\u7528\u591a\u4e2a\u88c5\u9970\u5668\uff0c\u8fd9\u65f6\u5019\u53ef\u4ee5\u901a\u8fc7\u5d4c\u5957\u548c\u7ec4\u5408\u88c5\u9970\u5668\u6765\u5b9e\u73b0\u3002\u88c5\u9970\u5668\u7684\u5d4c\u5957\u987a\u5e8f\u662f\u4ece\u5185\u5230\u5916\u6267\u884c\uff0c\u5373\u6700\u5185\u5c42\u7684\u88c5\u9970\u5668\u5148\u6267\u884c\u3002<\/p>\n<\/p>\n
1\u3001\u5d4c\u5957\u88c5\u9970\u5668<\/h4>\n<\/p>\n
\u5047\u8bbe\u6211\u4eec\u6709\u4e24\u4e2a\u88c5\u9970\u5668\uff0c\u4e00\u4e2a\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u53c2\u6570\u8f6c\u6362\u4e3a\u5927\u5199\uff0c\u53e6\u4e00\u4e2a\u7528\u4e8e\u6dfb\u52a0\u65e5\u5fd7\u8bb0\u5f55\uff1a<\/p>\n<\/p>\n
def uppercase_decorator(func):<\/p>\n def wrapper(*args, kwargs):<\/p>\n
new_args = [arg.upper() if isinstance(arg, str) else arg for arg in args]<\/p>\n
new_kwargs = {k: v.upper() if isinstance(v, str) else v for k, v in kwargs.items()}<\/p>\n
return func(*new_args, new_kwargs)<\/p>\n
return wrapper<\/p>\n
def log_result_decorator(func):<\/p>\n
def wrapper(*args, kwargs):<\/p>\n
result = func(*args, kwargs)<\/p>\n
logging.info(f"Function {func.__name__} returned {result}")<\/p>\n
return result<\/p>\n
return wrapper<\/p>\n
@log_result_decorator<\/p>\n
@uppercase_decorator<\/p>\n
def greet(name, message):<\/p>\n
return f"{message}, {name}!"<\/p>\n
print(greet("Alice", "hello"))<\/p>\n
\u8f93\u51fa\uff1aHELLO, ALICE! \u5e76\u8bb0\u5f55\u65e5\u5fd7\u4fe1\u606f<\/strong><\/h2>\n<\/code><\/pre>\n<\/p>\n
2\u3001\u7ec4\u5408\u88c5\u9970\u5668<\/h4>\n<\/p>\n
\u6211\u4eec\u8fd8\u53ef\u4ee5\u5c06\u591a\u4e2a\u88c5\u9970\u5668\u7ec4\u5408\u5230\u4e00\u4e2a\u65b0\u7684\u88c5\u9970\u5668\u4e2d\uff0c\u65b9\u4fbf\u590d\u7528\uff1a<\/p>\n<\/p>\n
def composite_decorator(func):<\/p>\n @uppercase_decorator<\/p>\n
@log_result_decorator<\/p>\n
def wrapper(*args, kwargs):<\/p>\n
return func(*args, kwargs)<\/p>\n
return wrapper<\/p>\n
@composite_decorator<\/p>\n
def greet(name, message):<\/p>\n
return f"{message}, {name}!"<\/p>\n
print(greet("Alice", "hello"))<\/p>\n
\u8f93\u51fa\uff1aHELLO, ALICE! \u5e76\u8bb0\u5f55\u65e5\u5fd7\u4fe1\u606f<\/strong><\/h2>\n<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u88c5\u9970\u5668\u7684\u5b9e\u9645\u5e94\u7528<\/h3>\n<\/p>\n
\u88c5\u9970\u5668\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u4e0b\u9762\u5217\u4e3e\u4e00\u4e9b\u5e38\u89c1\u7684\u573a\u666f\uff1a<\/p>\n<\/p>\n
1\u3001\u7f13\u5b58\u88c5\u9970\u5668<\/h4>\n<\/p>\n
\u7f13\u5b58\u88c5\u9970\u5668\u7528\u4e8e\u7f13\u5b58\u51fd\u6570\u7684\u8fd4\u56de\u7ed3\u679c\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002\u5e38\u89c1\u7684\u7f13\u5b58\u88c5\u9970\u5668\u6709 functools.lru_cache<\/code>\uff1a<\/p>\n<\/p>\nfrom functools import lru_cache<\/p>\n@lru_cache(maxsize=32)<\/p>\n
def fibonacci(n):<\/p>\n
if n < 2:<\/p>\n
return n<\/p>\n
return fibonacci(n-1) + fibonacci(n-2)<\/p>\n
print(fibonacci(10)) # \u8f93\u51fa\uff1a55<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u6743\u9650\u6821\u9a8c\u88c5\u9970\u5668<\/h4>\n<\/p>\n
\u5728Web\u5e94\u7528\u4e2d\uff0c\u6743\u9650\u6821\u9a8c\u88c5\u9970\u5668\u7528\u4e8e\u68c0\u67e5\u7528\u6237\u662f\u5426\u6709\u6743\u9650\u8bbf\u95ee\u67d0\u4e2a\u8d44\u6e90\uff1a<\/p>\n<\/p>\n
def permission_required(permission):<\/p>\n def decorator(func):<\/p>\n
def wrapper(user, *args, kwargs):<\/p>\n
if not user.has_permission(permission):<\/p>\n
raise PermissionError("Permission denied")<\/p>\n
return func(user, *args, kwargs)<\/p>\n
return wrapper<\/p>\n
return decorator<\/p>\n
@permission_required('admin')<\/p>\n
def delete_user(user, user_id):<\/p>\n
# \u5220\u9664\u7528\u6237\u7684\u903b\u8f91<\/p>\n
pass<\/p>\n
<\/code><\/pre>\n<\/p>\n
3\u3001\u91cd\u8bd5\u88c5\u9970\u5668<\/h4>\n<\/p>\n
\u91cd\u8bd5\u88c5\u9970\u5668\u7528\u4e8e\u5728\u51fd\u6570\u5931\u8d25\u65f6\u81ea\u52a8\u91cd\u8bd5\uff1a<\/p>\n<\/p>\n
import time<\/p>\nimport random<\/p>\n
def retry_decorator(retries, delay):<\/p>\n
def decorator(func):<\/p>\n
def wrapper(*args, kwargs):<\/p>\n
for _ in range(retries):<\/p>\n
try:<\/p>\n
return func(*args, kwargs)<\/p>\n
except Exception as e:<\/p>\n
print(f"Error: {e}, Retrying in {delay} seconds...")<\/p>\n
time.sleep(delay)<\/p>\n
return func(*args, kwargs)<\/p>\n
return wrapper<\/p>\n
return decorator<\/p>\n
@retry_decorator(retries=3, delay=2)<\/p>\n
def unstable_function():<\/p>\n
if random.random() < 0.5:<\/p>\n
raise ValueError("Random error occurred")<\/p>\n
return "Success"<\/p>\n
print(unstable_function()) # \u8f93\u51fa\uff1aSuccess \u6216\u8005\u5728\u5c1d\u8bd5\u51e0\u6b21\u540e\u6210\u529f<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u88c5\u9970\u5668\u662fPython\u4e2d\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u6269\u5c55\u6216\u4fee\u6539\u51fd\u6570\u7684\u884c\u4e3a\u3002\u901a\u8fc7\u4f7f\u7528\u88c5\u9970\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u51fd\u6570\u6267\u884c\u524d\u5bf9\u53c2\u6570\u8fdb\u884c\u9884\u5904\u7406\uff0c\u786e\u4fdd\u51fd\u6570\u63a5\u6536\u5230\u7684\u53c2\u6570\u7b26\u5408\u9884\u671f\u7684\u683c\u5f0f\u6216\u6761\u4ef6\uff1b\u5728\u51fd\u6570\u6267\u884c\u540e\u5bf9\u7ed3\u679c\u8fdb\u884c\u540e\u5904\u7406\uff0c\u589e\u5f3a\u51fd\u6570\u7684\u529f\u80fd\u3002\u6b64\u5916\uff0c\u88c5\u9970\u5668\u8fd8\u53ef\u4ee5\u5d4c\u5957\u548c\u7ec4\u5408\uff0c\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n
\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u88c5\u9970\u5668\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u5982\u7f13\u5b58\u3001\u6743\u9650\u6821\u9a8c\u3001\u65e5\u5fd7\u8bb0\u5f55\u3001\u91cd\u8bd5\u7b49\u3002\u638c\u63e1\u88c5\u9970\u5668\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u7684\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u3001\u4f18\u96c5\u548c\u6613\u4e8e\u7ef4\u62a4\u3002\u5e0c\u671b\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u60a8\u80fd\u591f\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u88c5\u9970\u5668\uff0c\u63d0\u5347\u7f16\u7a0b\u6280\u5de7\u548c\u5f00\u53d1\u6548\u7387\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u4ec0\u4e48\u662fPython\u4e2d\u7684\u88c5\u9970\u5668\uff1f<\/strong><\/p>\n\u88c5\u9970\u5668\u662fPython\u4e2d\u7684\u4e00\u79cd\u7279\u6b8a\u8bed\u6cd5\u7ed3\u6784\uff0c\u7528\u4e8e\u5728\u4e0d\u4fee\u6539\u51fd\u6570\u6e90\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u589e\u5f3a\u6216\u6539\u53d8\u51fd\u6570\u7684\u884c\u4e3a\u3002\u5b83\u901a\u5e38\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u63a5\u53d7\u53e6\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u51fd\u6570\u3002\u88c5\u9970\u5668\u53ef\u4ee5\u7528\u4e8e\u65e5\u5fd7\u8bb0\u5f55\u3001\u6743\u9650\u68c0\u67e5\u3001\u7f13\u5b58\u7b49\u591a\u79cd\u573a\u666f\u3002<\/p>\n
\u5982\u4f55\u4f7f\u7528\u88c5\u9970\u5668\u5904\u7406\u51fd\u6570\u53c2\u6570\uff1f<\/strong><\/p>\n\u4f7f\u7528\u88c5\u9970\u5668\u5904\u7406\u51fd\u6570\u53c2\u6570\u53ef\u4ee5\u901a\u8fc7\u5728\u88c5\u9970\u5668\u5185\u90e8\u5b9a\u4e49\u4e00\u4e2a\u5305\u88c5\u51fd\u6570\u6765\u5b9e\u73b0\u3002\u5305\u88c5\u51fd\u6570\u53ef\u4ee5\u63a5\u6536\u539f\u51fd\u6570\u7684\u53c2\u6570\uff0c\u5e76\u5728\u8c03\u7528\u539f\u51fd\u6570\u4e4b\u524d\u6216\u4e4b\u540e\u8fdb\u884c\u989d\u5916\u7684\u5904\u7406\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5bf9\u53c2\u6570\u8fdb\u884c\u9a8c\u8bc1\u3001\u8f6c\u6362\u6216\u8bb0\u5f55\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n
def param_decorator(func):\n def wrapper(*args, **kwargs):\n # \u5bf9\u53c2\u6570\u8fdb\u884c\u5904\u7406\n print("\u5904\u7406\u53c2\u6570:", args, kwargs)\n # \u8c03\u7528\u539f\u51fd\u6570\n return func(*args, **kwargs)\n return wrapper\n\n@param_decorator\ndef my_function(x, y):\n return x + y\n\nresult = my_function(5, 10)\n<\/code><\/pre>\n\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u88c5\u9970\u5668param_decorator<\/code>\u5904\u7406\u4e86\u4f20\u5165my_function<\/code>\u7684\u53c2\u6570\u3002<\/p>\n\u88c5\u9970\u5668\u662f\u5426\u53ef\u4ee5\u7528\u4e8e\u7c7b\u7684\u65b9\u6cd5\uff1f<\/strong><\/p>\n\u662f\u7684\uff0c\u88c5\u9970\u5668\u4e0d\u4ec5\u53ef\u4ee5\u7528\u4e8e\u666e\u901a\u51fd\u6570\uff0c\u4e5f\u53ef\u4ee5\u7528\u4e8e\u7c7b\u7684\u65b9\u6cd5\u3002\u5f53\u88c5\u9970\u5668\u5e94\u7528\u4e8e\u7c7b\u7684\u65b9\u6cd5\u65f6\uff0c\u5b83\u4eec\u53ef\u4ee5\u5904\u7406\u65b9\u6cd5\u7684\u53c2\u6570\u5e76\u589e\u5f3a\u5176\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u88c5\u9970\u5668\u6765\u8bb0\u5f55\u65b9\u6cd5\u8c03\u7528\u7684\u6b21\u6570\u6216\u9a8c\u8bc1\u8f93\u5165\u53c2\u6570\u7684\u6709\u6548\u6027\u3002\u4f7f\u7528\u65f6\uff0c\u88c5\u9970\u5668\u7684\u5b9e\u73b0\u65b9\u5f0f\u4e0e\u5904\u7406\u51fd\u6570\u76f8\u4f3c\uff0c\u53ea\u662f\u9700\u8981\u6ce8\u610fself<\/code>\u53c2\u6570\u7684\u5904\u7406\u3002<\/p>\n\u5982\u4f55\u94fe\u5f0f\u4f7f\u7528\u591a\u4e2a\u88c5\u9970\u5668\uff1f<\/strong><\/p>\n\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u540c\u65f6\u4f7f\u7528\u591a\u4e2a\u88c5\u9970\u5668\u6765\u589e\u5f3a\u540c\u4e00\u4e2a\u51fd\u6570\u6216\u65b9\u6cd5\u3002\u94fe\u5f0f\u4f7f\u7528\u591a\u4e2a\u88c5\u9970\u5668\u65f6\uff0c\u88c5\u9970\u5668\u7684\u6267\u884c\u987a\u5e8f\u662f\u4ece\u5185\u5230\u5916\u7684\uff0c\u5373\u6700\u5185\u5c42\u7684\u88c5\u9970\u5668\u6700\u5148\u88ab\u8c03\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n
def decorator_one(func):\n def wrapper(*args, **kwargs):\n print("Decorator One")\n return func(*args, **kwargs)\n return wrapper\n\ndef decorator_two(func):\n def wrapper(*args, **kwargs):\n print("Decorator Two")\n return func(*args, **kwargs)\n return wrapper\n\n@decorator_one\n@decorator_two\ndef my_function():\n print("Function Execution")\n\nmy_function()\n<\/code><\/pre>\n\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u8f93\u51fa\u7684\u987a\u5e8f\u4e3a\u201cDecorator One\u201d\uff0c\u7136\u540e\u662f\u201cDecorator Two\u201d\uff0c\u6700\u540e\u662f\u201cFunction Execution\u201d\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u7075\u6d3b\u7ec4\u5408\u4e0d\u540c\u7684\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u4f7f\u7528\u88c5\u9970\u5668\u5bf9\u53c2\u6570\u5904\u7406\u7684\u6838\u5fc3\u89c2\u70b9\uff1a\u88c5\u9970\u5668\u662f\u4e00\u79cd\u7528\u4e8e\u6269\u5c55\u6216\u4fee\u6539\u51fd\u6570\u884c\u4e3a\u7684\u9ad8\u7ea7\u5de5\u5177\uff0c\u88c5\u9970\u5668\u53ef\u4ee5\u5728\u51fd\u6570\u6267\u884c […]","protected":false},"author":3,"featured_media":1036049,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1036043"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1036043"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1036043\/revisions"}],"predecessor-version":[{"id":1036050,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1036043\/revisions\/1036050"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1036049"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1036043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1036043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1036043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"python\u5982\u4f55\u4f7f\u7528\u88c5\u9970\u5668\u5bf9\u53c2\u6570\u5904\u7406\"](\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2024\/12\/85a8dc8c-21fb-45ef-9c97-d29c7fff8c7f.webp?x-oss-process=image\/auto-orient,1\/format,webp\")
<\/p>\n