{"id":1174212,"date":"2025-01-15T17:14:24","date_gmt":"2025-01-15T09:14:24","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1174212.html"},"modified":"2025-01-15T17:14:24","modified_gmt":"2025-01-15T09:14:24","slug":"python%e5%a6%82%e4%bd%95%e8%b0%83%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1174212.html","title":{"rendered":"python\u5982\u4f55\u8c03\u7528\u51fd\u6570\u7684\u53d8\u91cf"},"content":{"rendered":"

\"python\u5982\u4f55\u8c03\u7528\u51fd\u6570\u7684\u53d8\u91cf\"<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u8c03\u7528\u51fd\u6570\u7684\u53d8\u91cf\u3002\u4f7f\u7528\u51fd\u6570\u53c2\u6570\u3001\u901a\u8fc7\u5168\u5c40\u53d8\u91cf\u3001\u4f7f\u7528\u95ed\u5305\u3001\u901a\u8fc7\u7c7b\u7684\u5b9e\u4f8b\u53d8\u91cf\u7b49<\/strong>\u90fd\u662f\u5e38\u89c1\u7684\u65b9\u6cd5\u3002\u4e0b\u9762\u6211\u5c06\u8be6\u7ec6\u89e3\u91ca\u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\u2014\u2014\u4f7f\u7528\u51fd\u6570\u53c2\u6570\u3002<\/p>\n<\/p>\n

\u4f7f\u7528\u51fd\u6570\u53c2\u6570<\/h3>\n<\/p>\n

\u51fd\u6570\u53c2\u6570\u662f\u51fd\u6570\u5b9a\u4e49\u4e2d\u6700\u5e38\u89c1\u7684\u65b9\u5f0f\uff0c\u901a\u8fc7\u4f20\u9012\u53c2\u6570\uff0c\u51fd\u6570\u53ef\u4ee5\u63a5\u6536\u5916\u90e8\u6570\u636e\u5e76\u8fdb\u884c\u5904\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u8bf4\u660e\u5982\u4f55\u4f7f\u7528\u51fd\u6570\u53c2\u6570\uff1a<\/p>\n<\/p>\n

def add(a, b):<\/p>\n
    return a + b<\/p>\n
result = add(3, 5)<\/p>\n
print(result)  # \u8f93\u51fa: 8<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u51fd\u6570 add<\/code> \u63a5\u53d7\u4e24\u4e2a\u53c2\u6570 a<\/code> \u548c b<\/code>\uff0c\u5e76\u8fd4\u56de\u5b83\u4eec\u7684\u548c\u3002\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u6211\u4eec\u5c06\u5177\u4f53\u7684\u503c 3<\/code> \u548c 5<\/code> \u4f20\u9012\u7ed9 a<\/code> \u548c b<\/code>\u3002<\/p>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u8be6\u7ec6\u4ecb\u7ecdPython\u4e2d\u8c03\u7528\u51fd\u6570\u53d8\u91cf\u7684\u5176\u4ed6\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\n
\u4e00\u3001\u4f7f\u7528\u51fd\u6570\u53c2\u6570<\/h2>\n<\/p>\n
\u51fd\u6570\u53c2\u6570\u662f\u6700\u5e38\u89c1\u548c\u76f4\u63a5\u7684\u65b9\u5f0f\u3002\u901a\u8fc7\u51fd\u6570\u53c2\u6570\uff0c\u60a8\u53ef\u4ee5\u5c06\u5916\u90e8\u53d8\u91cf\u7684\u503c\u4f20\u9012\u7ed9\u51fd\u6570\uff0c\u5e76\u5728\u51fd\u6570\u5185\u4f7f\u7528\u8fd9\u4e9b\u503c\u8fdb\u884c\u8ba1\u7b97\u6216\u5176\u4ed6\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
1. \u4f4d\u7f6e\u53c2\u6570<\/h3>\n<\/p>\n
\u4f4d\u7f6e\u53c2\u6570\u662f\u51fd\u6570\u5b9a\u4e49\u4e2d\u6700\u57fa\u672c\u7684\u5f62\u5f0f\u3002\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u4f20\u9012\u7684\u53c2\u6570\u6309\u4f4d\u7f6e\u987a\u5e8f\u5bf9\u5e94\u5230\u51fd\u6570\u5b9a\u4e49\u4e2d\u7684\u53c2\u6570\u3002<\/p>\n<\/p>\n
def multiply(x, y):<\/p>\n
    return x * y<\/p>\n
result = multiply(4, 6)<\/p>\n
print(result)  # \u8f93\u51fa: 24<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c4<\/code> \u548c 6<\/code> \u5206\u522b\u88ab\u4f20\u9012\u7ed9\u53c2\u6570 x<\/code> \u548c y<\/code>\uff0c\u5e76\u5728\u51fd\u6570\u5185\u90e8\u8fdb\u884c\u4e58\u6cd5\u8fd0\u7b97\u3002<\/p>\n<\/p>\n
2. \u5173\u952e\u5b57\u53c2\u6570<\/h3>\n<\/p>\n
\u5173\u952e\u5b57\u53c2\u6570\u5141\u8bb8\u5728\u8c03\u7528\u51fd\u6570\u65f6\u663e\u5f0f\u6307\u5b9a\u53c2\u6570\u540d\u79f0\uff0c\u4ece\u800c\u4e0d\u53d7\u53c2\u6570\u987a\u5e8f\u7684\u9650\u5236\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n
def greet(name, message):<\/p>\n
    print(f"{message}, {name}!")<\/p>\n
greet(name="Alice", message="Hello")<\/p>\n
greet(message="Goodbye", name="Bob")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e24\u4e2a\u8c03\u7528\u4e2d\uff0c\u53c2\u6570 name<\/code> \u548c message<\/code> \u88ab\u663e\u5f0f\u6307\u5b9a\uff0c\u56e0\u6b64\u8c03\u7528\u987a\u5e8f\u53ef\u4ee5\u4ea4\u6362\u3002<\/p>\n<\/p>\n
3. \u9ed8\u8ba4\u53c2\u6570<\/h3>\n<\/p>\n
\u9ed8\u8ba4\u53c2\u6570\u662f\u5728\u51fd\u6570\u5b9a\u4e49\u65f6\u4e3a\u53c2\u6570\u6307\u5b9a\u9ed8\u8ba4\u503c\uff0c\u5982\u679c\u5728\u8c03\u7528\u51fd\u6570\u65f6\u6ca1\u6709\u63d0\u4f9b\u5bf9\u5e94\u7684\u53c2\u6570\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002<\/p>\n<\/p>\n
def power(base, exponent=2):<\/p>\n
    return base  exponent<\/p>\n
print(power(3))      # \u8f93\u51fa: 9 (\u4f7f\u7528\u9ed8\u8ba4\u7684\u6307\u6570\u503c 2)<\/p>\n
print(power(3, 3))   # \u8f93\u51fa: 27 (\u63d0\u4f9b\u4e86\u65b0\u7684\u6307\u6570\u503c 3)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c\u8c03\u7528 power<\/code> \u51fd\u6570\u65f6\u6ca1\u6709\u63d0\u4f9b exponent<\/code> \u53c2\u6570\uff0c\u5219\u9ed8\u8ba4\u4f7f\u7528 2<\/code> \u4f5c\u4e3a\u6307\u6570\u503c\u3002<\/p>\n<\/p>\n
4. \u53ef\u53d8\u957f\u5ea6\u53c2\u6570<\/h3>\n<\/p>\n
\u53ef\u53d8\u957f\u5ea6\u53c2\u6570\u5141\u8bb8\u51fd\u6570\u63a5\u6536\u4efb\u610f\u6570\u91cf\u7684\u53c2\u6570\uff0c\u8fd9\u5728\u9700\u8981\u5904\u7406\u4e0d\u5b9a\u6570\u91cf\u7684\u8f93\u5165\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
*args<\/h4>\n<\/p>\n
\u4f7f\u7528 *args<\/code> \u53ef\u4ee5\u63a5\u6536\u4efb\u610f\u6570\u91cf\u7684\u4f4d\u7f6e\u53c2\u6570\uff0c\u5e76\u5c06\u5b83\u4eec\u4f5c\u4e3a\u5143\u7ec4\u4f20\u9012\u7ed9\u51fd\u6570\u3002<\/p>\n<\/p>\n
def sum_all(*args):<\/p>\n
    total = 0<\/p>\n
    for num in args:<\/p>\n
        total += num<\/p>\n
    return total<\/p>\n
print(sum_all(1, 2, 3, 4))  # \u8f93\u51fa: 10<\/p>\n
print(sum_all(5, 10))       # \u8f93\u51fa: 15<\/p>\n
<\/code><\/pre>\n<\/p>\n
kwargs<\/h4>\n<\/p>\n
\u4f7f\u7528 kwargs<\/code> \u53ef\u4ee5\u63a5\u6536\u4efb\u610f\u6570\u91cf\u7684\u5173\u952e\u5b57\u53c2\u6570\uff0c\u5e76\u5c06\u5b83\u4eec\u4f5c\u4e3a\u5b57\u5178\u4f20\u9012\u7ed9\u51fd\u6570\u3002<\/p>\n<\/p>\n
def print_info(kwargs):<\/p>\n
    for key, value in kwargs.items():<\/p>\n
        print(f"{key}: {value}")<\/p>\n
print_info(name="Alice", age=30, city="New York")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0ckwargs<\/code> \u63a5\u6536\u6240\u6709\u4f20\u9012\u7684\u5173\u952e\u5b57\u53c2\u6570\uff0c\u5e76\u5c06\u5b83\u4eec\u4f5c\u4e3a\u5b57\u5178\u8fdb\u884c\u5904\u7406\u3002<\/p>\n<\/p>\n
\n
\u4e8c\u3001\u901a\u8fc7\u5168\u5c40\u53d8\u91cf<\/h2>\n<\/p>\n
\u5168\u5c40\u53d8\u91cf\u662f\u5728\u51fd\u6570\u5916\u90e8\u5b9a\u4e49\u7684\u53d8\u91cf\uff0c\u53ef\u4ee5\u5728\u51fd\u6570\u5185\u90e8\u76f4\u63a5\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u4f7f\u7528\u5168\u5c40\u53d8\u91cf\u65f6\u8981\u7279\u522b\u5c0f\u5fc3\uff0c\u907f\u514d\u610f\u5916\u4fee\u6539\u5bfc\u81f4\u7684\u9519\u8bef\u3002<\/p>\n<\/p>\n
1. \u5b9a\u4e49\u5168\u5c40\u53d8\u91cf<\/h3>\n<\/p>\n
x = 10<\/p>\n
def print_global():<\/p>\n
    print(x)<\/p>\n
print_global()  # \u8f93\u51fa: 10<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u53d8\u91cf x<\/code> \u662f\u5168\u5c40\u53d8\u91cf\uff0c\u53ef\u4ee5\u5728\u51fd\u6570 print_global<\/code> \u4e2d\u76f4\u63a5\u8bbf\u95ee\u3002<\/p>\n<\/p>\n
2. \u4fee\u6539\u5168\u5c40\u53d8\u91cf<\/h3>\n<\/p>\n
\u8981\u5728\u51fd\u6570\u5185\u90e8\u4fee\u6539\u5168\u5c40\u53d8\u91cf\uff0c\u9700\u8981\u4f7f\u7528 global<\/code> \u5173\u952e\u5b57\u3002<\/p>\n<\/p>\n
y = 5<\/p>\n
def modify_global():<\/p>\n
    global y<\/p>\n
    y = 15<\/p>\n
modify_global()<\/p>\n
print(y)  # \u8f93\u51fa: 15<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 global y<\/code> \u58f0\u660e y<\/code> \u662f\u5168\u5c40\u53d8\u91cf\uff0c\u4ece\u800c\u5728\u51fd\u6570\u5185\u90e8\u4fee\u6539\u5176\u503c\u3002<\/p>\n<\/p>\n
\n
\u4e09\u3001\u4f7f\u7528\u95ed\u5305<\/h2>\n<\/p>\n
\u95ed\u5305\u662f\u6307\u5728\u4e00\u4e2a\u51fd\u6570\u5185\u90e8\u5b9a\u4e49\u53e6\u4e00\u4e2a\u51fd\u6570\uff0c\u5e76\u4e14\u5185\u90e8\u51fd\u6570\u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u51fd\u6570\u7684\u53d8\u91cf\u3002\u95ed\u5305\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u5e26\u6709\u72b6\u6001\u7684\u51fd\u6570\u3002<\/p>\n<\/p>\n
1. \u521b\u5efa\u95ed\u5305<\/h3>\n<\/p>\n
def outer_function(x):<\/p>\n
    def inner_function(y):<\/p>\n
        return x + y<\/p>\n
    return inner_function<\/p>\n
closure = outer_function(10)<\/p>\n
print(closure(5))  # \u8f93\u51fa: 15<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cinner_function<\/code> \u662f outer_function<\/code> \u7684\u95ed\u5305\uff0c\u53ef\u4ee5\u8bbf\u95ee outer_function<\/code> \u7684\u53d8\u91cf x<\/code>\u3002<\/p>\n<\/p>\n
2. \u5b9e\u9645\u5e94\u7528<\/h3>\n<\/p>\n
\u95ed\u5305\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u5e26\u6709\u72b6\u6001\u7684\u51fd\u6570\uff0c\u4f8b\u5982\u8ba1\u6570\u5668\u3002<\/p>\n<\/p>\n
def make_counter():<\/p>\n
    count = 0<\/p>\n
    def counter():<\/p>\n
        nonlocal count<\/p>\n
        count += 1<\/p>\n
        return count<\/p>\n
    return counter<\/p>\n
counter_a = make_counter()<\/p>\n
print(counter_a())  # \u8f93\u51fa: 1<\/p>\n
print(counter_a())  # \u8f93\u51fa: 2<\/p>\n
counter_b = make_counter()<\/p>\n
print(counter_b())  # \u8f93\u51fa: 1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6bcf\u4e2a counter<\/code> \u51fd\u6570\u90fd\u6709\u81ea\u5df1\u7684 count<\/code> \u53d8\u91cf\uff0c\u901a\u8fc7\u95ed\u5305\u5b9e\u73b0\u4e86\u72ec\u7acb\u7684\u8ba1\u6570\u5668\u3002<\/p>\n<\/p>\n
\n
\u56db\u3001\u901a\u8fc7\u7c7b\u7684\u5b9e\u4f8b\u53d8\u91cf<\/h2>\n<\/p>\n
\u7c7b\u7684\u5b9e\u4f8b\u53d8\u91cf\u662f\u5b9a\u4e49\u5728\u7c7b\u4e2d\u7684\u53d8\u91cf\uff0c\u53ef\u4ee5\u5728\u7c7b\u7684\u65b9\u6cd5\u4e2d\u8bbf\u95ee\u548c\u4fee\u6539\u3002\u4f7f\u7528\u7c7b\u7684\u5b9e\u4f8b\u53d8\u91cf\u53ef\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u72b6\u6001\u7ba1\u7406\u548c\u884c\u4e3a\u3002<\/p>\n<\/p>\n
1. \u5b9a\u4e49\u7c7b\u548c\u5b9e\u4f8b\u53d8\u91cf<\/h3>\n<\/p>\n
class MyClass:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
    def display(self):<\/p>\n
        print(self.value)<\/p>\n
obj = MyClass(20)<\/p>\n
obj.display()  # \u8f93\u51fa: 20<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cvalue<\/code> \u662f\u7c7b MyClass<\/code> \u7684\u5b9e\u4f8b\u53d8\u91cf\uff0c\u53ef\u4ee5\u5728\u65b9\u6cd5 display<\/code> \u4e2d\u8bbf\u95ee\u3002<\/p>\n<\/p>\n
2. \u4fee\u6539\u5b9e\u4f8b\u53d8\u91cf<\/h3>\n<\/p>\n
\u53ef\u4ee5\u5728\u7c7b\u7684\u65b9\u6cd5\u4e2d\u4fee\u6539\u5b9e\u4f8b\u53d8\u91cf\u7684\u503c\u3002<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
    def increment(self, amount):<\/p>\n
        self.value += amount<\/p>\n
obj = MyClass(10)<\/p>\n
obj.increment(5)<\/p>\n
print(obj.value)  # \u8f93\u51fa: 15<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u65b9\u6cd5 increment<\/code> \u4fee\u6539\u4e86\u5b9e\u4f8b\u53d8\u91cf value<\/code> \u7684\u503c\u3002<\/p>\n<\/p>\n
3. \u4f7f\u7528\u7c7b\u53d8\u91cf<\/h3>\n<\/p>\n
\u7c7b\u53d8\u91cf\u662f\u5b9a\u4e49\u5728\u7c7b\u7ea7\u522b\u7684\u53d8\u91cf\uff0c\u53ef\u4ee5\u88ab\u6240\u6709\u5b9e\u4f8b\u5171\u4eab\u3002<\/p>\n<\/p>\n
class MyClass:<\/p>\n
    class_variable = 0<\/p>\n
    def __init__(self, value):<\/p>\n
        self.value = value<\/p>\n
        MyClass.class_variable += 1<\/p>\n
    def display(self):<\/p>\n
        print(f"Value: {self.value}, Class Variable: {MyClass.class_variable}")<\/p>\n
obj1 = MyClass(10)<\/p>\n
obj2 = MyClass(20)<\/p>\n
obj1.display()  # \u8f93\u51fa: Value: 10, Class Variable: 2<\/p>\n
obj2.display()  # \u8f93\u51fa: Value: 20, Class Variable: 2<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cclass_variable<\/code> \u662f\u7c7b\u53d8\u91cf\uff0c\u88ab\u6240\u6709\u5b9e\u4f8b\u5171\u4eab\u548c\u4fee\u6539\u3002<\/p>\n<\/p>\n
\n
\u4e94\u3001\u901a\u8fc7\u88c5\u9970\u5668<\/h2>\n<\/p>\n
\u88c5\u9970\u5668\u662f\u4e00\u79cd\u7528\u4e8e\u4fee\u6539\u51fd\u6570\u6216\u65b9\u6cd5\u884c\u4e3a\u7684\u9ad8\u7ea7\u51fd\u6570\u3002\u88c5\u9970\u5668\u53ef\u4ee5\u5728\u4e0d\u4fee\u6539\u539f\u59cb\u51fd\u6570\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u6dfb\u52a0\u989d\u5916\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n
1. \u5b9a\u4e49\u88c5\u9970\u5668<\/h3>\n<\/p>\n
def my_decorator(func):<\/p>\n
    def wrapper(*args, kwargs):<\/p>\n
        print("Something is happening before the function is called.")<\/p>\n
        result = func(*args, kwargs)<\/p>\n
        print("Something is happening after the function is called.")<\/p>\n
        return result<\/p>\n
    return wrapper<\/p>\n
@my_decorator<\/p>\n
def say_hello(name):<\/p>\n
    print(f"Hello, {name}!")<\/p>\n
say_hello("Alice")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmy_decorator<\/code> \u662f\u4e00\u4e2a\u88c5\u9970\u5668\uff0c\u6dfb\u52a0\u4e86\u5728\u51fd\u6570\u8c03\u7528\u524d\u540e\u6253\u5370\u6d88\u606f\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n
2. \u4f7f\u7528\u88c5\u9970\u5668\u4f20\u9012\u53c2\u6570<\/h3>\n<\/p>\n
\u88c5\u9970\u5668\u672c\u8eab\u4e5f\u53ef\u4ee5\u63a5\u53d7\u53c2\u6570\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u7075\u6d3b\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n
def repeat(times):<\/p>\n
    def decorator(func):<\/p>\n
        def wrapper(*args, kwargs):<\/p>\n
            for _ in range(times):<\/p>\n
                func(*args, kwargs)<\/p>\n
        return wrapper<\/p>\n
    return decorator<\/p>\n
@repeat(3)<\/p>\n
def greet(name):<\/p>\n
    print(f"Hello, {name}!")<\/p>\n
greet("Bob")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u88c5\u9970\u5668 repeat<\/code> \u63a5\u53d7\u4e00\u4e2a\u53c2\u6570 times<\/code>\uff0c\u6307\u5b9a\u51fd\u6570 greet<\/code> \u88ab\u8c03\u7528\u7684\u6b21\u6570\u3002<\/p>\n<\/p>\n
\n
\u516d\u3001\u901a\u8fc7\u6a21\u5757\u548c\u5305<\/h2>\n<\/p>\n
\u6a21\u5757\u548c\u5305\u662fPython\u4e2d\u7ec4\u7ec7\u4ee3\u7801\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5c06\u53d8\u91cf\u548c\u51fd\u6570\u653e\u5728\u4e0d\u540c\u7684\u6a21\u5757\u4e2d\uff0c\u5e76\u5728\u9700\u8981\u65f6\u5bfc\u5165\u548c\u4f7f\u7528\u3002<\/p>\n<\/p>\n
1. \u521b\u5efa\u548c\u5bfc\u5165\u6a21\u5757<\/h3>\n<\/p>\n
\u4e00\u4e2a\u6a21\u5757\u662f\u4e00\u4e2a\u5305\u542bPython\u4ee3\u7801\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u5305\u542b\u51fd\u6570\u3001\u7c7b\u548c\u53d8\u91cf\u3002\u53ef\u4ee5\u901a\u8fc7 import<\/code> \u8bed\u53e5\u5bfc\u5165\u6a21\u5757\u3002<\/p>\n<\/p>\n
# my_module.py<\/p>\n
def add(a, b):<\/p>\n
    return a + b<\/p>\n
mAI<\/a>n.py<\/strong><\/h2>\n
import my_module<\/p>\n
result = my_module.add(3, 4)<\/p>\n
print(result)  # \u8f93\u51fa: 7<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmy_module<\/code> \u662f\u4e00\u4e2a\u6a21\u5757\uff0c\u5305\u542b\u4e00\u4e2a\u51fd\u6570 add<\/code>\uff0c\u53ef\u4ee5\u5728\u5176\u4ed6\u6587\u4ef6\u4e2d\u5bfc\u5165\u548c\u4f7f\u7528\u3002<\/p>\n<\/p>\n
2. \u4f7f\u7528\u5305\u7ec4\u7ec7\u6a21\u5757<\/h3>\n<\/p>\n
\u5305\u662f\u5305\u542b\u591a\u4e2a\u6a21\u5757\u7684\u76ee\u5f55\uff0c\u53ef\u4ee5\u7528\u4e8e\u66f4\u590d\u6742\u7684\u9879\u76ee\u7ed3\u6784\u3002<\/p>\n<\/p>\n
# my_package\/__init__.py<\/p>\n
(\u53ef\u4ee5\u4e3a\u7a7a)<\/strong><\/h2>\n
my_package\/module1.py<\/strong><\/h2>\n
def func1():<\/p>\n
    print("This is function 1")<\/p>\n
my_package\/module2.py<\/strong><\/h2>\n
def func2():<\/p>\n
    print("This is function 2")<\/p>\n
main.py<\/strong><\/h2>\n
from my_package import module1, module2<\/p>\n
module1.func1()  # \u8f93\u51fa: This is function 1<\/p>\n
module2.func2()  # \u8f93\u51fa: This is function 2<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmy_package<\/code> \u662f\u4e00\u4e2a\u5305\uff0c\u5305\u542b\u4e24\u4e2a\u6a21\u5757 module1<\/code> \u548c module2<\/code>\uff0c\u53ef\u4ee5\u5206\u522b\u5bfc\u5165\u548c\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\n
\u4e03\u3001\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6<\/h2>\n<\/p>\n
\u5728\u4e00\u4e9b\u590d\u6742\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u914d\u7f6e\u6587\u4ef6\u6765\u5b58\u50a8\u53d8\u91cf\u548c\u914d\u7f6e\uff0c\u5e76\u5728\u8fd0\u884c\u65f6\u8bfb\u53d6\u8fd9\u4e9b\u914d\u7f6e\u3002<\/p>\n<\/p>\n
1. \u4f7f\u7528JSON\u914d\u7f6e\u6587\u4ef6<\/h3>\n<\/p>\n
JSON\u662f\u4e00\u79cd\u5e38\u7528\u7684\u914d\u7f6e\u6587\u4ef6\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528Python\u5185\u7f6e\u7684 json<\/code> \u6a21\u5757\u8fdb\u884c\u8bfb\u53d6\u3002<\/p>\n<\/p>\n
# config.json<\/p>\n
{<\/p>\n
    "host": "localhost",<\/p>\n
    "port": 8000<\/p>\n
}<\/p>\n
main.py<\/strong><\/h2>\n
import json<\/p>\n
with open('config.json', 'r') as f:<\/p>\n
    config = json.load(f)<\/p>\n
print(config['host'])  # \u8f93\u51fa: localhost<\/p>\n
print(config['port'])  # \u8f93\u51fa: 8000<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u914d\u7f6e\u6587\u4ef6 config.json<\/code> \u5305\u542b\u4e24\u4e2a\u914d\u7f6e\u9879 host<\/code> \u548c port<\/code>\uff0c\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u8bfb\u53d6\u5e76\u4f7f\u7528\u3002<\/p>\n<\/p>\n
2. \u4f7f\u7528YAML\u914d\u7f6e\u6587\u4ef6<\/h3>\n<\/p>\n
YAML\u662f\u4e00\u79cd\u66f4\u4eba\u6027\u5316\u7684\u914d\u7f6e\u6587\u4ef6\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528 pyyaml<\/code> \u5e93\u8fdb\u884c\u8bfb\u53d6\u3002<\/p>\n<\/p>\n
# config.yaml<\/p>\n
database:<\/p>\n
  host: localhost<\/p>\n
  port: 5432<\/p>\n
  user: admin<\/p>\n
  password: secret<\/p>\n
<\/code><\/pre>\n<\/p>\n
# main.py<\/p>\n
import yaml<\/p>\n
with open('config.yaml', 'r') as f:<\/p>\n
    config = yaml.SAFe<\/a>_load(f)<\/p>\n
print(config['database']['host'])  # \u8f93\u51fa: localhost<\/p>\n
print(config['database']['port'])  # \u8f93\u51fa: 5432<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u914d\u7f6e\u6587\u4ef6 config.yaml<\/code> \u5305\u542b\u6570\u636e\u5e93\u76f8\u5173\u7684\u914d\u7f6e\uff0c\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u8bfb\u53d6\u5e76\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\n
\u516b\u3001\u901a\u8fc7\u73af\u5883\u53d8\u91cf<\/h2>\n<\/p>\n
\u73af\u5883\u53d8\u91cf\u662f\u64cd\u4f5c\u7cfb\u7edf\u7ea7\u522b\u7684\u53d8\u91cf\uff0c\u53ef\u4ee5\u7528\u4e8e\u914d\u7f6e\u5e94\u7528\u7a0b\u5e8f\u7684\u8fd0\u884c\u73af\u5883\u3002Python\u53ef\u4ee5\u4f7f\u7528 os<\/code> \u6a21\u5757\u8bfb\u53d6\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<\/p>\n
1. \u8bbe\u7f6e\u73af\u5883\u53d8\u91cf<\/h3>\n<\/p>\n
\u5728\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf\u7684\u65b9\u6cd5\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n
Windows<\/h4>\n<\/p>\n
set MY_VARIABLE=my_value<\/p>\n
<\/code><\/pre>\n<\/p>\n
Linux\/MacOS<\/h4>\n<\/p>\n
export MY_VARIABLE=my_value<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u8bfb\u53d6\u73af\u5883\u53d8\u91cf<\/h3>\n<\/p>\n
import os<\/p>\n
my_variable = os.getenv('MY_VARIABLE', 'default_value')<\/p>\n
print(my_variable)  # \u8f93\u51fa: my_value (\u5982\u679c\u73af\u5883\u53d8\u91cf\u5df2\u8bbe\u7f6e)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 os.getenv<\/code> \u51fd\u6570\u8bfb\u53d6\u73af\u5883\u53d8\u91cf MY_VARIABLE<\/code>\uff0c\u5982\u679c\u672a\u8bbe\u7f6e\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c default_value<\/code>\u3002<\/p>\n<\/p>\n
\n
\u4e5d\u3001\u901a\u8fc7\u547d\u4ee4\u884c\u53c2\u6570<\/h2>\n<\/p>\n
\u547d\u4ee4\u884c\u53c2\u6570\u662f\u8fd0\u884c\u7a0b\u5e8f\u65f6\u4f20\u9012\u7684\u53c2\u6570\uff0c\u53ef\u4ee5\u7528\u4e8e\u914d\u7f6e\u5e94\u7528\u7a0b\u5e8f\u7684\u884c\u4e3a\u3002Python\u53ef\u4ee5\u4f7f\u7528 argparse<\/code> \u6a21\u5757\u89e3\u6790\u547d\u4ee4\u884c\u53c2\u6570\u3002<\/p>\n<\/p>\n
1. \u5b9a\u4e49\u548c\u89e3\u6790\u547d\u4ee4\u884c\u53c2\u6570<\/h3>\n<\/p>\n
import argparse<\/p>\n
parser = argparse.ArgumentParser(description='Example script.')<\/p>\n
parser.add_argument('--name', type=str, required=True, help='Your name')<\/p>\n
parser.add_argument('--age', type=int, help='Your age')<\/p>\n
args = parser.parse_args()<\/p>\n
print(f"Name: {args.name}")<\/p>\n
print(f"Age: {args.age}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 argparse<\/code> \u6a21\u5757\u5b9a\u4e49\u548c\u89e3\u6790\u547d\u4ee4\u884c\u53c2\u6570 --name<\/code> \u548c --age<\/code>\u3002<\/p>\n<\/p>\n
2. \u8fd0\u884c\u811a\u672c<\/h3>\n<\/p>\n
python script.py --name Alice --age 30<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd0\u884c\u811a\u672c\u65f6\u4f20\u9012\u7684\u547d\u4ee4\u884c\u53c2\u6570\u5c06\u88ab\u89e3\u6790\u5e76\u6253\u5370\u51fa\u6765\u3002<\/p>\n<\/p>\n
\n
\u5341\u3001\u901a\u8fc7\u914d\u7f6e\u7ba1\u7406\u5de5\u5177<\/h2>\n<\/p>\n
\u5728\u4e00\u4e9b\u590d\u6742\u7684\u9879\u76ee\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\u6765\u7ba1\u7406\u548c\u4f20\u9012\u53d8\u91cf\u3002\u5e38\u89c1\u7684\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\u5305\u62ec configparser<\/code> \u548c dotenv<\/code>\u3002<\/p>\n<\/p>\n
1. \u4f7f\u7528configparser\u7ba1\u7406\u914d\u7f6e<\/h3>\n<\/p>\n
configparser<\/code> \u6a21\u5757\u53ef\u4ee5\u8bfb\u53d6 .ini<\/code> \u683c\u5f0f\u7684\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<\/p>\n
# config.ini<\/p>\n
[database]<\/p>\n
host = localhost<\/p>\n
port = 5432<\/p>\n
user = admin<\/p>\n
password = secret<\/p>\n
<\/code><\/pre>\n<\/p>\n
import configparser<\/p>\n
config = configparser.ConfigParser()<\/p>\n
config.read('config.ini')<\/p>\n
print(config['database']['host'])  # \u8f93\u51fa: localhost<\/p>\n
print(config['database']['port'])  # \u8f93\u51fa: 5432<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 configparser<\/code> \u8bfb\u53d6 config.ini<\/code> \u914d\u7f6e\u6587\u4ef6\uff0c\u5e76\u8bbf\u95ee\u6570\u636e\u5e93\u76f8\u5173\u7684\u914d\u7f6e\u3002<\/p>\n<\/p>\n
2. \u4f7f\u7528dotenv\u7ba1\u7406\u73af\u5883\u53d8\u91cf<\/h3>\n<\/p>\n
dotenv<\/code> \u5e93\u53ef\u4ee5\u8bfb\u53d6 .env<\/code> \u6587\u4ef6\u4e2d\u7684\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<\/p>\n
# .env<\/p>\n
HOST=localhost<\/p>\n
PORT=8000<\/p>\n
<\/code><\/pre>\n<\/p>\n
from dotenv import load_dotenv<\/p>\n
import os<\/p>\n
load_dotenv()<\/p>\n
host = os.getenv('HOST')<\/p>\n
port = os.getenv('PORT')<\/p>\n
print(f"Host: {host}")<\/p>\n
print(f"Port: {port}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528 dotenv<\/code> \u8bfb\u53d6 .env<\/code> \u6587\u4ef6\u4e2d\u7684\u73af\u5883\u53d8\u91cf\uff0c\u5e76\u5728\u8fd0\u884c\u65f6\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\n
\u901a\u8fc7\u4ee5\u4e0a\u591a\u79cd\u65b9\u6cd5\uff0c\u60a8\u53ef\u4ee5\u5728Python\u4e2d\u7075\u6d3b\u5730\u8c03\u7528\u51fd\u6570\u7684\u53d8\u91cf\uff0c\u5e76\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u65b9\u6cd5\u3002\u65e0\u8bba\u662f\u901a\u8fc7\u51fd\u6570\u53c2\u6570\u3001\u5168\u5c40\u53d8\u91cf\u3001\u95ed\u5305\u3001\u7c7b\u7684\u5b9e\u4f8b\u53d8\u91cf\u3001\u88c5\u9970\u5668\u3001\u6a21\u5757\u548c\u5305\u3001\u914d\u7f6e\u6587\u4ef6\u3001\u73af\u5883\u53d8\u91cf\u3001\u547d\u4ee4\u884c\u53c2\u6570\uff0c\u8fd8\u662f\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u72ec\u7279\u7684\u4f18\u52bf\u548c\u9002\u7528\u573a\u666f\u3002\u5e0c\u671b\u8fd9\u4e9b\u8be6\u7ec6\u7684\u89e3\u91ca\u548c\u793a\u4f8b\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u83b7\u53d6\u51fd\u6570\u5185\u90e8\u7684\u53d8\u91cf\u503c\uff1f<\/strong>
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