\u5982\u679c\u4f60\u5df2\u7ecf\u719f\u6089\u4e86\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5，\u90a3\u4e48\u606d\u559c\u4f60\u6765\u5230Python\u8fdb\u9636\u7684\u5927\u95e8！\u95ed\u5305（Closure）\u548c\u88c5\u9970\u5668（Decorator）\u662fPython\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u7cbe\u9ad3，\u4e5f\u662f\u9762\u8bd5\u4e2d\u7ed5\u4e0d\u5f00\u7684\u9ad8\u9891\u8003\u70b9\u3002\u672c\u6587\u5c06\u6df1\u5165\u5256\u6790\u95ed\u5305\u7684\u201c\u4e09\u8981\u7d20\u201d，\u5e76\u5e26\u4f60\u624b\u5199\u901a\u7528\u7684\u65e5\u5fd7\u88c5\u9970\u5668\u3001\u8ba1\u65f6\u88c5\u9970\u5668，\u8ba9\u4f60\u771f\u6b63\u7406\u89e3@\u8bed\u6cd5\u7cd6\u80cc\u540e\u7684\u539f\u7406\u3002<\/p>\n
\u95ed\u5305\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u5d4c\u5957\u51fd\u6570，\u5b83\u8ba9\u5185\u5c42\u51fd\u6570\u6355\u83b7\u5e76\u8bb0\u4f4f\u4e86\u5916\u5c42\u51fd\u6570\u7684\u5c40\u90e8\u53d8\u91cf，\u5373\u4f7f\u5916\u5c42\u51fd\u6570\u5df2\u7ecf\u6267\u884c\u5b8c\u6bd5\u3002<\/p>\n
\u51fd\u6570\u5d4c\u5957：\u5185\u5c42\u51fd\u6570\u5b9a\u4e49\u5728\u5916\u5c42\u51fd\u6570\u5185\u90e8\u3002<\/p>\n<\/li>\n
\u5185\u5c42\u51fd\u6570\u4f7f\u7528\u5916\u5c42\u51fd\u6570\u7684\u53d8\u91cf（\u6355\u83b7\u72b6\u6001）\u3002<\/p>\n<\/li>\n
\u5916\u5c42\u51fd\u6570\u8fd4\u56de\u5185\u5c42\u51fd\u6570（\u628a\u201c\u884c\u4e3a\u201d\u8fd4\u56de\u51fa\u53bb）\u3002<\/p>\n<\/li>\n
def counter(step):
\n count = 0 # \u5916\u90e8\u5c40\u90e8\u53d8\u91cf
\n def inner():
\n nonlocal count # \u58f0\u660e\u4fee\u6539\u5916\u90e8\u53d8\u91cf
\n count += step
\n return count
\n return inner<\/p>\n
# \u521b\u5efa\u4e24\u4e2a\u72ec\u7acb\u7684\u8ba1\u6570\u5668\u5b9e\u4f8b
\nc1 = counter(1)
\nc2 = counter(2)<\/p>\n
print(c1()) # 1
\nprint(c1()) # 2
\nprint(c2()) # 2
\nprint(c2()) # 4<\/p>\n
\u6bcf\u6b21\u8c03\u7528counter，\u90fd\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u95ed\u5305\u7a7a\u95f4，c1\u548cc2\u7684count\u4e92\u4e0d\u5e72\u6270\u3002<\/p>\n
\u88c5\u9970\u5668\u5c31\u662f\u4e00\u4e2a\u95ed\u5305，\u5b83\u63a5\u6536\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570，\u8fd4\u56de\u4e00\u4e2a\u589e\u5f3a\u540e\u7684\u65b0\u51fd\u6570\u3002
\n\u8bed\u6cd5\u7cd6\u00a0@deco\u00a0\u7b49\u4ef7\u4e8e\u00a0func = deco(func)\u3002<\/p>\n
\u5728\u4e0d\u6539\u52a8\u539f\u51fd\u6570\u7684\u60c5\u51b5\u4e0b，\u8ba1\u7b97\u51fd\u6570\u6267\u884c\u65f6\u95f4：<\/p>\n
import time<\/p>\n
def timer(func):
\n def wrapper():
\n start = time.time()
\n func()
\n print(f"\u51fd\u6570 {func.__name__} \u8017\u65f6: {time.time() – start:.4f}s")
\n return wrapper<\/p>\n
@timer
\ndef sleep_func():
\n time.sleep(1)<\/p>\n
sleep_func() # \u51fd\u6570 sleep_func \u8017\u65f6: 1.0002s<\/p>\n
\u5b9e\u9645\u5f00\u53d1\u4e2d，\u539f\u51fd\u6570\u5f80\u5f80\u6709\u53c2\u6570\u548c\u8fd4\u56de\u503c\u3002\u6211\u4eec\u9700\u8981\u7528\u00a0*args, **kwargs\u00a0\u901a\u5403\u4e00\u5207\u3002<\/p>\n
def universal_deco(func):
\n def wrapper(*args, **kwargs):
\n print(f"\u6b63\u5728\u6267\u884c {func.__name__}")
\n result = func(*args, **kwargs) # \u63a5\u6536\u8fd4\u56de\u503c
\n print("\u6267\u884c\u7ed3\u675f")
\n return result # \u8fd4\u56de\u8fd4\u56de\u503c
\n return wrapper<\/p>\n
@universal_deco
\ndef add(a, b):
\n return a + b<\/p>\n
print(add(5, 3)) # 8 (\u540c\u65f6\u6253\u5370\u4e86\u65e5\u5fd7)<\/p>\n
\u5f53\u591a\u4e2a\u88c5\u9970\u5668\u53e0\u5728\u4e00\u8d77\u65f6，\u4ece\u4e0b\u5f80\u4e0a\u5305\u88c5，\u8c03\u7528\u65f6\u4ece\u4e0a\u5f80\u4e0b\u6267\u884c\u3002<\/p>\n
def deco1(func):
\n def wrapper():
\n print("\u5f00\u59cb\u88c5\u99701")
\n func()
\n print("\u7ed3\u675f\u88c5\u99701")
\n return wrapper<\/p>\n
def deco2(func):
\n def wrapper():
\n print("\u5f00\u59cb\u88c5\u99702")
\n func()
\n print("\u7ed3\u675f\u88c5\u99702")
\n return wrapper<\/p>\n
@deco1
\n@deco2
\ndef core():
\n print("\u6838\u5fc3\u4e1a\u52a1")<\/p>\n
core()
\n# \u8f93\u51fa\u987a\u5e8f：
\n# \u5f00\u59cb\u88c5\u99701
\n# \u5f00\u59cb\u88c5\u99702
\n# \u6838\u5fc3\u4e1a\u52a1
\n# \u7ed3\u675f\u88c5\u99702
\n# \u7ed3\u675f\u88c5\u99701<\/p>\n
\u6211\u4eec\u751f\u621010000\u4e2a\u968f\u673a\u6570，\u5bf9\u6bd4\u00a0sorted()\u3001list.sort()\u3001\u5192\u6ce1\u6392\u5e8f\u3001\u9009\u62e9\u6392\u5e8f\u7684\u6548\u7387\u3002\u5229\u7528\u88c5\u9970\u5668，\u96f6\u4fb5\u5165\u5730\u7edf\u8ba1\u6bcf\u4e2a\u7b97\u6cd5\u8017\u65f6\u3002<\/p>\n
import random
\nimport time<\/p>\n
# \u51c6\u59074\u4efd\u76f8\u540c\u7684\u6570\u636e
\ndata = [random.randint(1, 100000) for _ in range(10000)]
\nd1, d2, d3, d4 = data.copy(), data.copy(), data.copy(), data.copy()<\/p>\n
def time_calc(func):
\n def wrapper():
\n start = time.time()
\n func()
\n print(f"{func.__name__} \u8017\u65f6: {time.time() – start:.4f}s")
\n return wrapper<\/p>\n
@time_calc
\ndef test_sorted():
\n sorted(d1)<\/p>\n
@time_calc
\ndef test_sort():
\n d2.sort()<\/p>\n
@time_calc
\ndef test_bubble():
\n # \u5192\u6ce1\u6392\u5e8f（\u4f18\u5316\u7248）
\n for i in range(len(d3)-1):
\n for j in range(len(d3)-i-1):
\n if d3[j] > d3[j+1]:
\n d3[j], d3[j+1] = d3[j+1], d3[j]<\/p>\n
@time_calc
\ndef test_selection():
\n # \u9009\u62e9\u6392\u5e8f
\n for i in range(len(d4)-1):
\n min_idx = i
\n for j in range(i+1, len(d4)):
\n if d4[j] < d4[min_idx]:
\n min_idx = j
\n if min_idx != i:
\n d4[i], d4[min_idx] = d4[min_idx], d4[i]<\/p>\n
test_sorted() # \u6781\u5feb
\ntest_sort() # \u6781\u5feb
\ntest_bubble() # \u9f9f\u901f（\u614e\u7528，\u53ef\u80fd\u8981\u51e0\u5341\u79d2）
\ntest_selection() # \u8f83\u6162<\/p>\n
\u8fd0\u884c\u540e\u4f60\u4f1a\u76f4\u89c2\u611f\u53d7\u5230\u7b97\u6cd5\u65f6\u95f4\u590d\u6742\u5ea6\u5e26\u6765\u7684\u6027\u80fd\u5dee\u5f02，\u8fd9\u6b63\u662f\u88c5\u9970\u5668\u5728\u6027\u80fd\u76d1\u63a7\u4e2d\u7684\u5178\u578b\u5e94\u7528\u3002<\/p>\n
\u5229\u7528\u00a0datetime\u00a0\u8bb0\u5f55\u51fd\u6570\u6267\u884c\u7684\u65f6\u95f4\u3001\u53c2\u6570\u548c\u8fd4\u56de\u503c，\u5e76\u5199\u5165TXT\u65e5\u5fd7\u3002<\/p>\n
from datetime import datetime<\/p>\n
def logger(func):
\n def wrapper(*args, **kwargs):
\n result = func(*args, **kwargs)
\n # \u62fc\u63a5\u65e5\u5fd7\u5185\u5bb9
\n log_msg = (f"\u65f6\u95f4: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')} | "
\n f"\u51fd\u6570: {func.__name__} | "
\n f"\u53c2\u6570: {args} {kwargs} | "
\n f"\u8fd4\u56de\u503c: {result}\\\\n")
\n # \u5199\u5165\u6587\u4ef6（\u8ffd\u52a0\u6a21\u5f0f）
\n with open("func_log.txt", "a", encoding="utf-8") as f:
\n f.write(log_msg)
\n return result
\n return wrapper<\/p>\n
@logger
\ndef max_value(a, b):
\n return a if a > b else b<\/p>\n
max_value(10, 20)
\nmax_value(100, 50)<\/p>\n
\u6253\u5f00\u540c\u76ee\u5f55\u4e0b\u7684\u00a0func_log.txt，\u4f60\u4f1a\u770b\u5230\u6e05\u6670\u7684\u8c03\u7528\u8bb0\u5f55\u3002<\/p>\n
\u6709\u65f6\u6211\u4eec\u5e0c\u671b\u88c5\u9970\u5668\u672c\u8eab\u80fd\u63a5\u6536\u53c2\u6570（\u5982\u6307\u5b9a\u65e5\u5fd7\u6587\u4ef6\u540d），\u9700\u8981\u518d\u5305\u4e00\u5c42\u3002<\/p>\n
def file_logger(filename):
\n def decorator(func):
\n def wrapper(*args, **kwargs):
\n result = func(*args, **kwargs)
\n with open(filename, "a") as f:
\n f.write(f"{func.__name__} \u6267\u884c\u5b8c\u6bd5\\\\n")
\n return result
\n return wrapper
\n return decorator<\/p>\n
@file_logger("app.log")
\ndef run_task():
\n print("\u4efb\u52a1\u8fdb\u884c\u4e2d…")<\/p>\n
run_task()<\/p>\n
\u8fd9\u79cd\u201c\u88c5\u9970\u5668\u5de5\u5382\u201d\u5199\u6cd5\u5728\u5b9e\u9645\u6846\u67b6（\u5982Flask\u8def\u7531）\u4e2d\u975e\u5e38\u5e38\u89c1\u3002<\/p>\n
\u95ed\u5305\u548c\u88c5\u9970\u5668\u662fPython\u8fdb\u9636\u8def\u4e0a\u7ed5\u4e0d\u5f00\u7684\u4e24\u5ea7\u5927\u5c71\u3002\u7406\u89e3\u95ed\u5305\u7684\u4e09\u8981\u7d20，\u4f60\u5c31\u80fd\u770b\u61c2\u4e00\u5207\u88c5\u9970\u5668\u7684\u6e90\u7801；\u638c\u63e1\u88c5\u9970\u5668\u7684\u5d4c\u5957\u673a\u5236，\u4f60\u5c31\u80fd\u5199\u51fa\u9ad8\u53ef\u7528\u7684\u65e5\u5fd7\u3001\u6743\u9650\u3001\u7f13\u5b58\u3001\u8ba1\u65f6\u7b49\u901a\u7528\u7ec4\u4ef6\u3002<\/p>\n
\u5efa\u8bae\u4f60\u4eb2\u624b\u628a\u6587\u4e2d\u7684\u4ee3\u7801\u6572\u4e00\u904d，\u89c2\u5bdf\u63a7\u5236\u53f0\u8f93\u51fa\u548c\u6587\u4ef6\u5199\u5165\u7ed3\u679c\u3002\u53ea\u6709\u52a8\u624b\u5b9e\u8df5，\u624d\u80fd\u771f\u6b63\u5185\u5316\u8fd9\u4e9b\u77e5\u8bc6！<\/p>\n
\u5982\u679c\u8fd9\u7bc7\u6587\u7ae0\u5e2e\u5230\u4e86\u4f60，\u6b22\u8fce\u4e00\u952e\u4e09\u8fde，\u6211\u4eec\u4e0b\u671f\u89c1！<\/p>\n","protected":false},"excerpt":{"rendered":"
\u524d\u8a00\u5982\u679c\u4f60\u5df2\u7ecf\u719f\u6089\u4e86\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5，\u90a3\u4e48\u606d\u559c\u4f60\u6765\u5230Python\u8fdb\u9636\u7684\u5927\u95e8！\u95ed\u5305（Closure）\u548c\u88c5\u9970\u5668（Decorator）\u662fPython\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u7cbe\u9ad3，\u4e5f\u662f\u9762\u8bd5\u4e2d\u7ed5\u4e0d\u5f00\u7684\u9ad8\u9891\u8003\u70b9\u3002\u672c\u6587\u5c06\u6df1\u5165\u5256\u6790\u95ed\u5305\u7684\u201c\u4e09\u8981\u7d20\u201d，\u5e76\u5e26\u4f60\u624b\u5199\u901a\u7528\u7684\u65e5\u5fd7\u88c5\u9970\u5668\u3001\u8ba1\u65f6\u88c5\u9970\u5668，\u8ba9\u4f60\u771f\u6b63\u7406\u89e3\u8bed\u6cd5\u7cd6\u80cc\u540e\u7684\u539f\u7406\u30021. \u95ed\u5305（Closure）\u2014\u2014 \u51fd\u6570<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9099,81,190],"topic":[],"class_list":["post-82950","post","type-post","status-publish","format-standard","hentry","category-server","tag-9099","tag-python","tag-190"],"yoast_head":"\n