def func1():<\/p>\n raise Exception("An error occurred")<\/p>\n
def func2():<\/p>\n
try:<\/p>\n
func1()<\/p>\n
except Exception as e:<\/p>\n
print("Caught an exception:", e)<\/p>\n
func2() # \u8f93\u51fa: Caught an exception: An error occurred<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u6a21\u5757\u7ba1\u7406<\/h3>\n<\/p>\n
Python\u7684\u6a21\u5757\u7ba1\u7406\u673a\u5236\u5141\u8bb8\u5f00\u53d1\u8005\u5c06\u4ee3\u7801\u5212\u5206\u4e3a\u4e0d\u540c\u7684\u6a21\u5757\uff0c\u5e76\u5728\u9700\u8981\u65f6\u5bfc\u5165\u548c\u8c03\u7528\u8fd9\u4e9b\u6a21\u5757\u3002\u901a\u8fc7\u6a21\u5757\u7ba1\u7406\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4ee3\u7801\u7684\u6a21\u5757\u5316\u548c\u590d\u7528\u3002<\/p>\n<\/p>\n
3.1 \u5bfc\u5165\u6a21\u5757<\/h4>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528import<\/code>\u8bed\u53e5\u5bfc\u5165\u6a21\u5757\uff1a<\/p>\n<\/p>\nimport math<\/p>\nprint(math.sqrt(16)) # \u8f93\u51fa: 4.0<\/p>\n
<\/code><\/pre>\n<\/p>\n
3.2 \u6a21\u5757\u7684\u7ed3\u6784\u5316<\/h4>\n<\/p>\n
\u901a\u8fc7\u5c06\u4ee3\u7801\u5206\u4e3a\u4e0d\u540c\u7684\u6a21\u5757\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4ee3\u7801\u7684\u7ed3\u6784\u5316\u548c\u6a21\u5757\u5316\u7ba1\u7406\uff1a<\/p>\n<\/p>\n
\u6a21\u5757mymodule.py<\/code>\uff1a<\/p>\n<\/p>\ndef greet(name):<\/p>\n return f"Hello, {name}!"<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e3b\u7a0b\u5e8fmain.py<\/code>\uff1a<\/p>\n<\/p>\nimport mymodule<\/p>\nprint(mymodule.greet("Alice")) # \u8f93\u51fa: Hello, Alice!<\/p>\n
<\/code><\/pre>\n<\/p>\n
3.3 \u5305\u7684\u4f7f\u7528<\/h4>\n<\/p>\n
\u5305\u662f\u5305\u542b\u591a\u4e2a\u6a21\u5757\u7684\u76ee\u5f55\uff0c\u901a\u8fc7__init__.py<\/code>\u6587\u4ef6\u6765\u6807\u8bc6\u4e00\u4e2a\u76ee\u5f55\u4e3a\u5305\u3002\u53ef\u4ee5\u901a\u8fc7\u5305\u6765\u7ec4\u7ec7\u548c\u7ba1\u7406\u591a\u4e2a\u6a21\u5757\uff1a<\/p>\n<\/p>\n\u76ee\u5f55\u7ed3\u6784\uff1a<\/p>\n<\/p>\n
mypackage\/<\/p>\n __init__.py<\/p>\n
module1.py<\/p>\n
module2.py<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728module1.py<\/code>\u4e2d\u5b9a\u4e49\u51fd\u6570\uff1a<\/p>\n<\/p>\ndef func1():<\/p>\n return "Function 1"<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728module2.py<\/code>\u4e2d\u5b9a\u4e49\u51fd\u6570\uff1a<\/p>\n<\/p>\ndef func2():<\/p>\n return "Function 2"<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e3b\u7a0b\u5e8f\u4e2d\u5bfc\u5165\u548c\u4f7f\u7528\u5305\uff1a<\/p>\n<\/p>\n
from mypackage import module1, module2<\/p>\nprint(module1.func1()) # \u8f93\u51fa: Function 1<\/p>\n
print(module2.func2()) # \u8f93\u51fa: Function 2<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/h3>\n<\/p>\n
\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u662fPython\u4e2d\u7528\u4e8e\u7ba1\u7406\u8d44\u6e90\u7684\u673a\u5236\uff0c\u901a\u8fc7with<\/code>\u8bed\u53e5\u6765\u4f7f\u7528\u3002\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u53ef\u4ee5\u81ea\u52a8\u7ba1\u7406\u8d44\u6e90\u7684\u5206\u914d\u548c\u91ca\u653e\uff0c\u907f\u514d\u8d44\u6e90\u6cc4\u6f0f\u3002<\/p>\n<\/p>\n4.1 \u4f7f\u7528\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/h4>\n<\/p>\n
\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u901a\u5e38\u7528\u4e8e\u6587\u4ef6\u64cd\u4f5c\u3001\u7f51\u7edc\u8fde\u63a5\u3001\u6570\u636e\u5e93\u8fde\u63a5\u7b49\u9700\u8981\u663e\u5f0f\u7ba1\u7406\u8d44\u6e90\u7684\u573a\u666f\uff1a<\/p>\n<\/p>\n
with open('file.txt', 'r') as file:<\/p>\n content = file.read()<\/p>\n
print(content)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cwith<\/code>\u8bed\u53e5\u81ea\u52a8\u7ba1\u7406\u6587\u4ef6\u7684\u6253\u5f00\u548c\u5173\u95ed\uff0c\u65e0\u8bba\u5728\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u65f6\u662f\u5426\u51fa\u73b0\u5f02\u5e38\uff0c\u6587\u4ef6\u90fd\u4f1a\u88ab\u6b63\u786e\u5173\u95ed\u3002<\/p>\n<\/p>\n4.2 \u81ea\u5b9a\u4e49\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668<\/h4>\n<\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0__enter__<\/code>\u548c__exit__<\/code>\u65b9\u6cd5\u6765\u81ea\u5b9a\u4e49\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\uff1a<\/p>\n<\/p>\nclass MyContext:<\/p>\n def __enter__(self):<\/p>\n
print("Entering context")<\/p>\n
return self<\/p>\n
def __exit__(self, exc_type, exc_val, exc_tb):<\/p>\n
print("Exiting context")<\/p>\n
with MyContext():<\/p>\n
print("Inside context")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa\uff1a<\/p>\n<\/p>\n
Entering context<\/p>\nInside context<\/p>\n
Exiting context<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u8fed\u4ee3\u5668\u548c\u751f\u6210\u5668<\/h3>\n<\/p>\n
\u8fed\u4ee3\u5668\u548c\u751f\u6210\u5668\u662fPython\u4e2d\u7528\u4e8e\u8fed\u4ee3\u6570\u636e\u7ed3\u6784\u7684\u673a\u5236\u3002\u8fed\u4ee3\u5668\u63d0\u4f9b\u4e86\u4e00\u79cd\u7edf\u4e00\u7684\u8fed\u4ee3\u63a5\u53e3\uff0c\u800c\u751f\u6210\u5668\u5219\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u8fed\u4ee3\u5668\uff0c\u901a\u8fc7yield<\/code>\u5173\u952e\u5b57\u6765\u751f\u6210\u6570\u636e\u3002<\/p>\n<\/p>\n5.1 \u8fed\u4ee3\u5668<\/h4>\n<\/p>\n
\u8fed\u4ee3\u5668\u662f\u5b9e\u73b0\u4e86__iter__<\/code>\u548c__next__<\/code>\u65b9\u6cd5\u7684\u5bf9\u8c61\uff0c\u7528\u4e8e\u5728\u96c6\u5408\u4e0a\u8fed\u4ee3\uff1a<\/p>\n<\/p>\nclass MyIterator:<\/p>\n def __init__(self, data):<\/p>\n
self.data = data<\/p>\n
self.index = 0<\/p>\n
def __iter__(self):<\/p>\n
return self<\/p>\n
def __next__(self):<\/p>\n
if self.index < len(self.data):<\/p>\n
result = self.data[self.index]<\/p>\n
self.index += 1<\/p>\n
return result<\/p>\n
else:<\/p>\n
raise StopIteration<\/p>\n
my_iter = MyIterator([1, 2, 3])<\/p>\n
for item in my_iter:<\/p>\n
print(item)<\/p>\n
<\/code><\/pre>\n<\/p>\n
5.2 \u751f\u6210\u5668<\/h4>\n<\/p>\n
\u751f\u6210\u5668\u662f\u4f7f\u7528yield<\/code>\u5173\u952e\u5b57\u5b9a\u4e49\u7684\u51fd\u6570\uff0c\u7528\u4e8e\u751f\u6210\u6570\u636e\u6d41\uff1a<\/p>\n<\/p>\ndef my_generator():<\/p>\n yield 1<\/p>\n
yield 2<\/p>\n
yield 3<\/p>\n
for item in my_generator():<\/p>\n
print(item)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4f7f\u7528\u751f\u6210\u5668\uff0c\u53ef\u4ee5\u7b80\u5316\u590d\u6742\u7684\u8fed\u4ee3\u903b\u8f91\uff0c\u5e76\u63d0\u9ad8\u5185\u5b58\u6548\u7387\uff0c\u56e0\u4e3a\u751f\u6210\u5668\u5728\u6bcf\u6b21\u8fed\u4ee3\u65f6\u53ea\u751f\u6210\u4e00\u4e2a\u503c\uff0c\u800c\u4e0d\u662f\u5728\u5185\u5b58\u4e2d\u5b58\u50a8\u6240\u6709\u503c\u3002<\/p>\n<\/p>\n
\u516d\u3001\u7ed3\u8bba<\/h3>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u51e0\u79cd\u65b9\u6cd5\uff0cPython\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u673a\u5236\u6765\u5b9e\u73b0\u8fd4\u56de\u4e0a\u5c42\u4ee3\u7801\u7684\u9700\u6c42\u3002\u65e0\u8bba\u662f\u901a\u8fc7\u51fd\u6570\u8c03\u7528\u3001\u5f02\u5e38\u5904\u7406\u3001\u6a21\u5757\u7ba1\u7406\uff0c\u8fd8\u662f\u4e0a\u4e0b\u6587\u7ba1\u7406\u5668\u548c\u8fed\u4ee3\u5668\u751f\u6210\u5668\uff0c\u5f00\u53d1\u8005\u90fd\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u573a\u666f\u548c\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u6765\u7ec4\u7ec7\u548c\u7ba1\u7406\u4ee3\u7801\u3002\u638c\u63e1\u8fd9\u4e9b\u673a\u5236\uff0c\u4e0d\u4ec5\u6709\u52a9\u4e8e\u7f16\u5199\u9ad8\u6548\u3001\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\uff0c\u8fd8\u80fd\u63d0\u9ad8\u4ee3\u7801\u7684\u590d\u7528\u6027\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u51fd\u6570\u8fd4\u56de\u4e0a\u5c42\u8c03\u7528\u7684\u529f\u80fd\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u4f7f\u7528return<\/code>\u8bed\u53e5\u53ef\u4ee5\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u8c03\u7528\u8be5\u51fd\u6570\u7684\u4e0a\u4e00\u5c42\u4ee3\u7801\u3002\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u53ef\u4ee5\u5c06\u8fd4\u56de\u503c\u8d4b\u7ed9\u4e00\u4e2a\u53d8\u91cf\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5728\u4e0a\u5c42\u4ee3\u7801\u4e2d\u4f7f\u7528\u8fd9\u4e2a\u7ed3\u679c\u3002\u4f8b\u5982\uff0c\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570\u5e76\u8fd4\u56de\u8ba1\u7b97\u7ed3\u679c\uff0c\u53ef\u4ee5\u5728\u4e3b\u7a0b\u5e8f\u4e2d\u63a5\u6536\u5e76\u6253\u5370\u8fd9\u4e2a\u7ed3\u679c\u3002<\/p>\n\u5728Python\u4e2d\u80fd\u5426\u901a\u8fc7\u5f02\u5e38\u5904\u7406\u8fd4\u56de\u5230\u4e0a\u5c42\u4ee3\u7801\uff1f<\/strong>
\u662f\u7684\uff0cPython\u7684\u5f02\u5e38\u5904\u7406\u673a\u5236\u5141\u8bb8\u7a0b\u5e8f\u5728\u53d1\u751f\u9519\u8bef\u65f6\u5411\u4e0a\u4f20\u9012\u5f02\u5e38\u3002\u5728\u4f7f\u7528try<\/code>\u548cexcept<\/code>\u8bed\u53e5\u65f6\uff0c\u5f53\u9047\u5230\u5f02\u5e38\uff0c\u63a7\u5236\u4f1a\u8f6c\u79fb\u5230\u4e0a\u5c42\u8c03\u7528\u4ee3\u7801\u4e2d\u7684except<\/code>\u5757\u4e2d\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u53ef\u4ee5\u8fd4\u56de\u5230\u4e0a\u5c42\u4ee3\u7801\uff0c\u8fd8\u80fd\u63d0\u4f9b\u9519\u8bef\u5904\u7406\u7684\u7075\u6d3b\u6027\u3002<\/p>\n\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u9012\u5f52\u8fd4\u56de\u4e0a\u5c42\u8c03\u7528\u7684\u7ed3\u679c\uff1f<\/strong>
\u9012\u5f52\u51fd\u6570\u53ef\u4ee5\u5728\u6bcf\u6b21\u8c03\u7528\u81ea\u8eab\u65f6\u8fd4\u56de\u7ed3\u679c\u3002\u901a\u8fc7\u5728\u9012\u5f52\u7684\u6bcf\u4e00\u5c42\u4f7f\u7528return<\/code>\u8bed\u53e5\uff0c\u5c06\u8ba1\u7b97\u7ed3\u679c\u9010\u5c42\u8fd4\u56de\u5230\u6700\u521d\u7684\u8c03\u7528\u8005\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u5206\u6b65\u8ba1\u7b97\u7684\u60c5\u51b5\uff0c\u4f8b\u5982\u8ba1\u7b97\u9636\u4e58\u6216\u6590\u6ce2\u90a3\u5951\u6570\u5217\u3002\u5728\u8bbe\u8ba1\u9012\u5f52\u51fd\u6570\u65f6\uff0c\u786e\u4fdd\u6709\u4e00\u4e2a\u660e\u786e\u7684\u7ec8\u6b62\u6761\u4ef6\uff0c\u4ee5\u907f\u514d\u65e0\u9650\u9012\u5f52\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8fd4\u56de\u4e0a\u5c42\u4ee3\u7801\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u51fd\u6570\u8c03\u7528\u3001\u5f02\u5e38\u5904\u7406\u673a\u5236\u548c\u6a21\u5757\u7ba1\u7406\u3002\u51fd\u6570\u8c03\u7528\u662f\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5c06\u4ee3\u7801\u5c01 […]","protected":false},"author":3,"featured_media":979731,"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\/979725"}],"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=979725"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/979725\/revisions"}],"predecessor-version":[{"id":979732,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/979725\/revisions\/979732"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/979731"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=979725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=979725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=979725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"python\u5982\u4f55\u8fd4\u56de\u4e0a\u5c42\u4ee3\u7801\"](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24205424\/2cd9b083-ec69-4d11-ae22-ef298aa4edeb.webp\")
<\/p>\n