{"id":1012934,"date":"2024-12-27T11:43:41","date_gmt":"2024-12-27T03:43:41","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1012934.html"},"modified":"2024-12-27T11:43:44","modified_gmt":"2024-12-27T03:43:44","slug":"python%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad%e7%a9%ba%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1012934.html","title":{"rendered":"python\u5982\u4f55\u5224\u65ad\u7a7a\u5b57\u7b26"},"content":{"rendered":"

\"python\u5982\u4f55\u5224\u65ad\u7a7a\u5b57\u7b26\"<\/p>\n

\u5728Python\u4e2d\u5224\u65ad\u7a7a\u5b57\u7b26\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528==<\/code>\u8fd0\u7b97\u7b26\u3001len()<\/code>\u51fd\u6570\u3001strip()<\/code>\u65b9\u6cd5\u3001not<\/code>\u5173\u952e\u5b57\u548cisspace()<\/code>\u65b9\u6cd5\u3002<\/strong>\u5176\u4e2d\uff0c\u4f7f\u7528==<\/code>\u8fd0\u7b97\u7b26\u548clen()<\/code>\u51fd\u6570\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\uff0cstrip()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u53bb\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u7a7a\u767d\u5b57\u7b26\uff0c\u800cnot<\/code>\u5173\u952e\u5b57\u53ef\u4ee5\u7528\u4e8e\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u3002isspace()<\/code>\u65b9\u6cd5\u5219\u7528\u4e8e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4ec5\u7531\u7a7a\u767d\u5b57\u7b26\u7ec4\u6210\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u63cf\u8ff0\u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u7684\u6700\u76f4\u63a5\u65b9\u6cd5\u662f\u4f7f\u7528==<\/code>\u8fd0\u7b97\u7b26\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u4e0e\u7a7a\u5b57\u7b26\u4e32""<\/code>\u8fdb\u884c\u6bd4\u8f83\u3002\u5982\u679c\u5b57\u7b26\u4e32\u7b49\u4e8e\u7a7a\u5b57\u7b26\u4e32\uff0c\u90a3\u4e48\u8be5\u5b57\u7b26\u4e32\u5c31\u662f\u7a7a\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

string = ""<\/p>\n
if string == "":<\/p>\n
    print("The string is empty.")<\/p>\n
else:<\/p>\n
    print("The string is not empty.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u660e\u4e86\uff0c\u6613\u4e8e\u7406\u89e3\u548c\u4f7f\u7528\u3002\u7136\u800c\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u9047\u5230\u4e00\u4e9b\u53ea\u5305\u542b\u7a7a\u767d\u5b57\u7b26\uff08\u5982\u7a7a\u683c\u3001\u5236\u8868\u7b26\u6216\u6362\u884c\u7b26\uff09\u7684\u5b57\u7b26\u4e32\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c==<\/code>\u8fd0\u7b97\u7b26\u5e76\u4e0d\u80fd\u5f88\u597d\u5730\u6ee1\u8db3\u9700\u6c42\u3002\u6b64\u65f6\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528strip()<\/code>\u65b9\u6cd5\u6765\u53bb\u9664\u5b57\u7b26\u4e32\u9996\u5c3e\u7684\u7a7a\u767d\u5b57\u7b26\uff0c\u7136\u540e\u518d\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n<\/p>\n
string = "   "<\/p>\n
if string.strip() == "":<\/p>\n
    print("The string is empty or contAI<\/a>ns only whitespace.")<\/p>\n
else:<\/p>\n
    print("The string is not empty.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u5176\u4ed6\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u4f7f\u7528len()<\/code>\u51fd\u6570<\/p>\n<\/p>\n
len()<\/code>\u51fd\u6570\u53ef\u4ee5\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002\u5982\u679c\u5b57\u7b26\u4e32\u957f\u5ea6\u4e3a0\uff0c\u5219\u8868\u793a\u5b57\u7b26\u4e32\u4e3a\u7a7a\u3002<\/p>\n<\/p>\n
string = ""<\/p>\n
if len(string) == 0:<\/p>\n
    print("The string is empty.")<\/p>\n
else:<\/p>\n
    print("The string is not empty.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u4e0e==<\/code>\u8fd0\u7b97\u7b26\u7c7b\u4f3c\uff0c\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u5b83\u901a\u8fc7\u8ba1\u7b97\u957f\u5ea6\u7684\u65b9\u5f0f\u6765\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528len()<\/code>\u53ef\u80fd\u4f1a\u66f4\u7b26\u5408\u7f16\u7a0b\u4e60\u60ef\u6216\u8005\u4ee3\u7801\u98ce\u683c\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528strip()<\/code>\u65b9\u6cd5<\/p>\n<\/p>\n
strip()<\/code>\u65b9\u6cd5\u7528\u4e8e\u79fb\u9664\u5b57\u7b26\u4e32\u9996\u5c3e\u7684\u7a7a\u767d\u5b57\u7b26\u3002\u901a\u8fc7\u7ed3\u5408==<\/code>\u8fd0\u7b97\u7b26\uff0c\u53ef\u4ee5\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u6216\u4ec5\u5305\u542b\u7a7a\u767d\u5b57\u7b26\u3002<\/p>\n<\/p>\n
string = "   "<\/p>\n
if string.strip() == "":<\/p>\n
    print("The string is empty or contains only whitespace.")<\/p>\n
else:<\/p>\n
    print("The string is not empty.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u9002\u5408\u5904\u7406\u7528\u6237\u8f93\u5165\u6216\u9700\u8981\u5ffd\u7565\u7a7a\u767d\u5b57\u7b26\u7684\u573a\u5408\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5728\u5904\u7406\u5b57\u7b26\u4e32\u4e4b\u524d\u53bb\u9664\u4e0d\u5fc5\u8981\u7684\u7a7a\u767d\u5b57\u7b26\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u56e0\u7a7a\u767d\u5b57\u7b26\u5bfc\u81f4\u7684\u903b\u8f91\u9519\u8bef\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528not<\/code>\u5173\u952e\u5b57<\/p>\n<\/p>\n
not<\/code>\u5173\u952e\u5b57\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u5047\u503c\u3002\u5728Python\u4e2d\uff0c\u7a7a\u5b57\u7b26\u4e32\u88ab\u89c6\u4e3a\u5047\u503c\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528not<\/code>\u5173\u952e\u5b57\u6765\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u3002<\/p>\n<\/p>\n
string = ""<\/p>\n
if not string:<\/p>\n
    print("The string is empty.")<\/p>\n
else:<\/p>\n
    print("The string is not empty.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7b80\u6d01\u660e\u4e86\uff0c\u901a\u5e38\u7528\u4e8e\u9700\u8981\u5feb\u901f\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u7684\u573a\u5408\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5bf9\u4e8e\u4ec5\u5305\u542b\u7a7a\u767d\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0cnot<\/code>\u5173\u952e\u5b57\u7684\u5224\u65ad\u7ed3\u679c\u4e3aFalse\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528isspace()<\/code>\u65b9\u6cd5<\/p>\n<\/p>\n
isspace()<\/code>\u65b9\u6cd5\u7528\u4e8e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4ec5\u7531\u7a7a\u767d\u5b57\u7b26\u7ec4\u6210\u3002\u5982\u679c\u5b57\u7b26\u4e32\u4e3a\u7a7a\u6216\u4ec5\u5305\u542b\u7a7a\u767d\u5b57\u7b26\uff0c\u8be5\u65b9\u6cd5\u8fd4\u56deTrue\u3002<\/p>\n<\/p>\n
string = "   "<\/p>\n
if string.isspace() or string == "":<\/p>\n
    print("The string is empty or contains only whitespace.")<\/p>\n
else:<\/p>\n
    print("The string is not empty.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u9002\u5408\u9700\u8981\u533a\u5206\u7a7a\u5b57\u7b26\u4e32\u548c\u4ec5\u5305\u542b\u7a7a\u767d\u5b57\u7b26\u7684\u573a\u5408\u3002\u901a\u8fc7\u7ed3\u5408isspace()<\/code>\u65b9\u6cd5\u548c==<\/code>\u8fd0\u7b97\u7b26\uff0c\u53ef\u4ee5\u7cbe\u786e\u5224\u65ad\u5b57\u7b26\u4e32\u7684\u72b6\u6001\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u7efc\u5408\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u3002\u4f8b\u5982\uff0c\u5728\u5904\u7406\u7528\u6237\u8f93\u5165\u65f6\uff0c\u901a\u5e38\u9700\u8981\u5ffd\u7565\u7528\u6237\u8f93\u5165\u7684\u7a7a\u767d\u5b57\u7b26\uff0c\u6b64\u65f6\u53ef\u4ee5\u4f7f\u7528strip()<\/code>\u65b9\u6cd5\u7ed3\u5408==<\/code>\u8fd0\u7b97\u7b26\u8fdb\u884c\u5224\u65ad\u3002\u800c\u5728\u67d0\u4e9b\u6027\u80fd\u654f\u611f\u7684\u573a\u5408\uff0c\u4f7f\u7528not<\/code>\u5173\u952e\u5b57\u53ef\u80fd\u4f1a\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n<\/p>\n
\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5c01\u88c5\u8fd9\u4e9b\u5224\u65ad\u903b\u8f91\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
def is_empty(string):<\/p>\n
    return string.strip() == ""<\/p>\n
string = "   "<\/p>\n
if is_empty(string):<\/p>\n
    print("The string is empty or contains only whitespace.")<\/p>\n
else:<\/p>\n
    print("The string is not empty.")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u573a\u5408\u7075\u6d3b\u4f7f\u7528\u5224\u65ad\u903b\u8f91\uff0c\u800c\u65e0\u9700\u91cd\u590d\u7f16\u5199\u76f8\u540c\u7684\u4ee3\u7801\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u7b80\u5355\u7684\u6761\u4ef6\u8bed\u53e5\u6765\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u7a7a\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528if not my_string:<\/code>\u6765\u9a8c\u8bc1\u3002\u5982\u679cmy_string<\/code>\u662f\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\uff08\u5373""<\/code>\uff09\uff0c\u6761\u4ef6\u5c06\u8fd4\u56deTrue\u3002\u8fd9\u6837\u7684\u65b9\u6cd5\u6e05\u6670\u4e14\u6613\u4e8e\u7406\u89e3\u3002<\/p>\n
\u5982\u4f55\u5904\u7406\u5305\u542b\u7a7a\u683c\u7684\u5b57\u7b26\u4e32\uff1f<\/strong>
\u6709\u65f6\u5b57\u7b26\u4e32\u53ef\u80fd\u5305\u542b\u7a7a\u683c\u800c\u4e0d\u662f\u5b8c\u5168\u4e3a\u7a7a\u3002\u4f7f\u7528strip()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7a7a\u767d\u5b57\u7b26\uff0c\u4ece\u800c\u786e\u4fdd\u68c0\u67e5\u7684\u662f\u5b9e\u9645\u5185\u5bb9\u3002\u4f8b\u5982\uff0cif not my_string.strip():<\/code>\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u4e00\u4e2a\u53ea\u5305\u542b\u7a7a\u683c\u7684\u5b57\u7b26\u4e32\u662f\u5426\u5e94\u89c6\u4e3a\u201c\u7a7a\u201d\u3002<\/p>\n
\u5728Python\u4e2d\u5982\u4f55\u5224\u65ad\u7a7a\u503c\u4e0e\u7a7a\u5b57\u7b26\u4e32\u7684\u533a\u522b\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u7a7a\u503c\uff08None<\/code>\uff09\u548c\u7a7a\u5b57\u7b26\u4e32\uff08""<\/code>\uff09\u662f\u4e0d\u540c\u7684\u3002\u8981\u68c0\u67e5\u53d8\u91cf\u662f\u5426\u4e3aNone\uff0c\u53ef\u4ee5\u4f7f\u7528if my_variable is None:<\/code>\u3002\u5982\u679c\u60f3\u540c\u65f6\u68c0\u67e5\u7a7a\u503c\u548c\u7a7a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u7ed3\u5408\u4f7f\u7528\uff1aif my_variable is None or my_variable == "":<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u786e\u4fdd\u4e86\u60a8\u80fd\u591f\u51c6\u786e\u5224\u65ad\u53d8\u91cf\u7684\u72b6\u6001\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5224\u65ad\u7a7a\u5b57\u7b26\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528==\u8fd0\u7b97\u7b26\u3001len()\u51fd\u6570\u3001strip()\u65b9\u6cd5\u3001not\u5173\u952e\u5b57\u548cissp […]","protected":false},"author":3,"featured_media":1012942,"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\/1012934"}],"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=1012934"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1012934\/revisions"}],"predecessor-version":[{"id":1012944,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1012934\/revisions\/1012944"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1012942"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1012934"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1012934"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1012934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}