{"id":1135740,"date":"2025-01-08T21:28:34","date_gmt":"2025-01-08T13:28:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1135740.html"},"modified":"2025-01-08T21:28:37","modified_gmt":"2025-01-08T13:28:37","slug":"python%e5%a6%82%e4%bd%95%e6%b1%82%e6%af%8f%e4%b8%aa%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%9a%84%e9%95%bf%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1135740.html","title":{"rendered":"python\u5982\u4f55\u6c42\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6"},"content":{"rendered":"

\"python\u5982\u4f55\u6c42\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\"<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684len()<\/code>\u51fd\u6570\u6765\u8ba1\u7b97\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002<\/strong> \u8fd9\u4e2a\u51fd\u6570\u975e\u5e38\u7b80\u5355\u6613\u7528\uff0c\u53ea\u9700\u5c06\u5b57\u7b26\u4e32\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9len()<\/code>\u51fd\u6570\uff0c\u5b83\u4f1a\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002\u65e0\u8bba\u662f\u5355\u4e2a\u5b57\u7b26\u4e32\u8fd8\u662f\u5217\u8868\u4e2d\u7684\u591a\u4e2a\u5b57\u7b26\u4e32\uff0clen()<\/code>\u51fd\u6570\u90fd\u80fd\u5904\u7406<\/strong>\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u5355\u4e2a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528len()<\/code>\u51fd\u6570\uff0c\u800c\u5bf9\u4e8e\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u53ef\u4ee5\u901a\u8fc7\u5faa\u73af\u6216\u5217\u8868\u89e3\u6790\u7b49\u65b9\u6cd5\u6765\u8ba1\u7b97\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4ec0\u4e48\u662f\u5b57\u7b26\u4e32\u957f\u5ea6\uff1f<\/h3>\n<\/p>\n

\u5b57\u7b26\u4e32\u957f\u5ea6\u662f\u6307\u5b57\u7b26\u4e32\u4e2d\u5b57\u7b26\u7684\u6570\u91cf\u3002Python\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\u4e32\u90fd\u662f\u4e00\u4e2a\u5b57\u7b26\u5e8f\u5217\uff0c\u53ef\u4ee5\u5305\u62ec\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u7b26\u53f7\u548c\u7a7a\u683c\u3002\u957f\u5ea6\u662f\u4e00\u4e2a\u975e\u5e38\u57fa\u7840\u7684\u5c5e\u6027\uff0c\u4f46\u5728\u5f88\u591a\u5e94\u7528\u4e2d\u90fd\u975e\u5e38\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\u7684\u5bc6\u7801\u957f\u5ea6\u3001\u9650\u5236\u6570\u636e\u5e93\u5b57\u6bb5\u7684\u5b57\u7b26\u6570\u3001\u5904\u7406\u6570\u636e\u5206\u6790\u4efb\u52a1\u4e2d\u7684\u6587\u672c\u6570\u636e\u7b49\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u4f7f\u7528len()<\/code>\u51fd\u6570\u8ba1\u7b97\u5b57\u7b26\u4e32\u957f\u5ea6<\/h3>\n<\/p>\n

1. \u5355\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6<\/h4>\n<\/p>\n

\u5bf9\u4e8e\u5355\u4e2a\u5b57\u7b26\u4e32\uff0c\u4f7f\u7528len()<\/code>\u51fd\u6570\u975e\u5e38\u76f4\u89c2\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n

my_string = "Hello, World!"<\/p>\n
length = len(my_string)<\/p>\n
print(f"The length of the string is: {length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen(my_string)<\/code>\u8fd4\u56de\u5b57\u7b26\u4e32 my_string<\/code> \u7684\u957f\u5ea6\uff0c\u5373 13<\/code>\u3002<\/p>\n<\/p>\n
2. \u591a\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6<\/h4>\n<\/p>\n
\u5982\u679c\u6211\u4eec\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u5e76\u4e14\u60f3\u8981\u8ba1\u7b97\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6216\u5217\u8868\u89e3\u6790\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
string_list = ["apple", "banana", "cherry"]<\/p>\n
lengths = [len(s) for s in string_list]<\/p>\n
print(f"The lengths of the strings are: {lengths}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e0a\u8ff0\u4ee3\u7801\u5c06\u4f1a\u8f93\u51fa [5, 6, 6]<\/code>\uff0c\u5206\u522b\u662f\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5b57\u7b26\u4e32\u957f\u5ea6\u8ba1\u7b97\u7684\u5b9e\u9645\u5e94\u7528<\/h3>\n<\/p>\n
1. \u6570\u636e\u9a8c\u8bc1<\/h4>\n<\/p>\n
\u5728\u8bb8\u591a\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u9a8c\u8bc1\u7528\u6237\u8f93\u5165\u7684\u6570\u636e\u957f\u5ea6\u3002\u4f8b\u5982\uff0c\u5728\u6ce8\u518c\u8868\u5355\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u9650\u5236\u7528\u6237\u540d\u7684\u957f\u5ea6\uff1a<\/p>\n<\/p>\n
username = input("Enter your username: ")<\/p>\n
if len(username) < 5:<\/p>\n
    print("Username must be at least 5 characters long.")<\/p>\n
else:<\/p>\n
    print("Username is valid.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u786e\u4fdd\u7528\u6237\u8f93\u5165\u7684\u7528\u6237\u540d\u7b26\u5408\u8981\u6c42\u3002<\/p>\n<\/p>\n
2. \u6587\u672c\u5206\u6790<\/h4>\n<\/p>\n
\u5728\u81ea\u7136\u8bed\u8a00\u5904\u7406\uff08NLP\uff09\u548c\u6587\u672c\u5206\u6790\u4e2d\uff0c\u5b57\u7b26\u4e32\u957f\u5ea6\u4e5f\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u7279\u5f81\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u8ba1\u7b97\u6bcf\u4e2a\u5355\u8bcd\u7684\u957f\u5ea6\u6765\u5206\u6790\u6587\u672c\u7684\u590d\u6742\u6027\uff1a<\/p>\n<\/p>\n
text = "Python is a great programming language."<\/p>\n
words = text.split()<\/p>\n
word_lengths = [len(word) for word in words]<\/p>\n
print(f"The lengths of the words are: {word_lengths}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u6bb5\u4ee3\u7801\u5c06\u4f1a\u8f93\u51fa [6, 2, 1, 5, 12, 8]<\/code>\uff0c\u5206\u522b\u662f\u6bcf\u4e2a\u5355\u8bcd\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5b57\u7b26\u4e32\u957f\u5ea6\u7684\u5176\u4ed6\u5904\u7406\u65b9\u6cd5<\/h3>\n<\/p>\n
1. \u4f7f\u7528map()<\/code>\u51fd\u6570<\/h4>\n<\/p>\n
\u9664\u4e86\u5faa\u73af\u548c\u5217\u8868\u89e3\u6790\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 map()<\/code> \u51fd\u6570\u6765\u8ba1\u7b97\u5b57\u7b26\u4e32\u5217\u8868\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff1a<\/p>\n<\/p>\n
string_list = ["apple", "banana", "cherry"]<\/p>\n
lengths = list(map(len, string_list))<\/p>\n
print(f"The lengths of the strings are: {lengths}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
map()<\/code> \u51fd\u6570\u5c06 len()<\/code> \u51fd\u6570\u5e94\u7528\u4e8e string_list<\/code> \u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u7ed3\u679c\u4e0e\u524d\u9762\u7684\u65b9\u6cd5\u76f8\u540c\u3002<\/p>\n<\/p>\n
2. \u7ed3\u5408\u5176\u4ed6\u5b57\u7b26\u4e32\u64cd\u4f5c<\/h4>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u7ed3\u5408\u5176\u4ed6\u5b57\u7b26\u4e32\u64cd\u4f5c\u6765\u8ba1\u7b97\u957f\u5ea6\u3002\u4f8b\u5982\uff0c\u8ba1\u7b97\u53bb\u9664\u7a7a\u683c\u540e\u7684\u5b57\u7b26\u4e32\u957f\u5ea6\uff1a<\/p>\n<\/p>\n
my_string = "   Hello, World!   "<\/p>\n
trimmed_length = len(my_string.strip())<\/p>\n
print(f"The trimmed length of the string is: {trimmed_length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
strip()<\/code> \u65b9\u6cd5\u53bb\u9664\u4e86\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7a7a\u683c\uff0clen()<\/code> \u51fd\u6570\u8ba1\u7b97\u51fa\u53bb\u9664\u7a7a\u683c\u540e\u7684\u957f\u5ea6\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5904\u7406\u591a\u8bed\u8a00\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n
\u5728\u591a\u8bed\u8a00\u5e94\u7528\u4e2d\uff0c\u5b57\u7b26\u4e32\u53ef\u80fd\u5305\u542b\u591a\u5b57\u8282\u5b57\u7b26\u3002Python\u5185\u7f6e\u7684\u5b57\u7b26\u4e32\u7c7b\u578b\u662fUnicode\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5904\u7406\u591a\u8bed\u8a00\u5b57\u7b26\uff1a<\/p>\n<\/p>\n
multi_language_string = "\u4f60\u597d\uff0c\u4e16\u754c\uff01"<\/p>\n
length = len(multi_language_string)<\/p>\n
print(f"The length of the multi-language string is: {length}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0clen(multi_language_string)<\/code> \u5c06\u8fd4\u56de 6<\/code>\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u4e2d\u6587\u5b57\u7b26\u4e5f\u88ab\u7b97\u4f5c\u4e00\u4e2a\u5b57\u7b26\u3002<\/p>\n<\/p>\n
\u516d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u8ba1\u7b97\u5b57\u7b26\u4e32\u957f\u5ea6\u662fPython\u7f16\u7a0b\u4e2d\u7684\u4e00\u4e2a\u57fa\u672c\u64cd\u4f5c\uff0clen()<\/code>\u51fd\u6570\u7b80\u6d01\u9ad8\u6548\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u573a\u666f<\/strong>\u3002\u65e0\u8bba\u662f\u5355\u4e2a\u5b57\u7b26\u4e32\u8fd8\u662f\u5b57\u7b26\u4e32\u5217\u8868\uff0clen()<\/code>\u51fd\u6570\u90fd\u80fd\u8f7b\u677e\u5904\u7406\u3002\u901a\u8fc7\u7ed3\u5408\u5176\u4ed6\u5b57\u7b26\u4e32\u64cd\u4f5c\u548c\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u6570\u636e\u9a8c\u8bc1\u548c\u6587\u672c\u5206\u6790\u4efb\u52a1\u3002<\/p>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u7406\u89e3\u548c\u638c\u63e1\u5b57\u7b26\u4e32\u957f\u5ea6\u7684\u8ba1\u7b97\u65b9\u6cd5\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u5065\u58ee\u6027\u548c\u53ef\u8bfb\u6027\uff0c\u8fd8\u80fd\u5728\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u4e2d\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u3002\u5e0c\u671b\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u80fd\u591f\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528Python\u4e2d\u7684\u5b57\u7b26\u4e32\u957f\u5ea6\u8ba1\u7b97\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5feb\u901f\u8ba1\u7b97\u5b57\u7b26\u4e32\u957f\u5ea6\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u4f7f\u7528\u5185\u7f6e\u7684len()<\/code>\u51fd\u6570\u53ef\u4ee5\u8f7b\u677e\u8ba1\u7b97\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002\u53ea\u9700\u5c06\u5b57\u7b26\u4e32\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9len()<\/code>\u51fd\u6570\uff0c\u5c31\u4f1a\u8fd4\u56de\u8be5\u5b57\u7b26\u4e32\u7684\u5b57\u7b26\u6570\u3002\u4f8b\u5982\uff0clen("Hello")<\/code>\u5c06\u8fd4\u56de5\u3002<\/p>\n
\u53ef\u4ee5\u5bf9\u591a\u4e2a\u5b57\u7b26\u4e32\u540c\u65f6\u8ba1\u7b97\u957f\u5ea6\u5417\uff1f<\/strong>
\u5f53\u7136\u53ef\u4ee5\u3002\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u6216\u8005\u5faa\u73af\u6765\u8ba1\u7b97\u591a\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u53ef\u4ee5\u7528[len(s) for s in strings]<\/code>\u6765\u83b7\u53d6\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\u4e2d\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0cstrings<\/code>\u662f\u5b58\u50a8\u5b57\u7b26\u4e32\u7684\u5217\u8868\u3002<\/p>\n
Python\u4e2d\u5982\u4f55\u5904\u7406\u7a7a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u7a7a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u4e3a0\u3002\u5f53\u4f60\u7528len("")<\/code>\u6765\u8ba1\u7b97\u7a7a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u65f6\uff0c\u7ed3\u679c\u4f1a\u662f0\u3002\u8fd9\u79cd\u60c5\u51b5\u5728\u5904\u7406\u5b57\u7b26\u4e32\u5217\u8868\u65f6\u4e5f\u5f88\u5e38\u89c1\uff0c\u8bb0\u5f97\u5bf9\u7a7a\u5b57\u7b26\u4e32\u7684\u5904\u7406\u4ee5\u907f\u514d\u903b\u8f91\u9519\u8bef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684len()\u51fd\u6570\u6765\u8ba1\u7b97\u6bcf\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002 \u8fd9\u4e2a\u51fd\u6570\u975e\u5e38\u7b80\u5355\u6613\u7528\uff0c\u53ea\u9700\u5c06\u5b57\u7b26\u4e32\u4f5c\u4e3a […]","protected":false},"author":3,"featured_media":1135749,"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\/1135740"}],"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=1135740"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1135740\/revisions"}],"predecessor-version":[{"id":1135750,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1135740\/revisions\/1135750"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1135749"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1135740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1135740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1135740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}