{"id":1154945,"date":"2025-01-13T17:57:25","date_gmt":"2025-01-13T09:57:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1154945.html"},"modified":"2025-01-13T17:57:27","modified_gmt":"2025-01-13T09:57:27","slug":"python%e9%87%8c%e5%a6%82%e4%bd%95%e5%ae%9a%e4%b9%89true","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1154945.html","title":{"rendered":"python\u91cc\u5982\u4f55\u5b9a\u4e49true"},"content":{"rendered":"

\"python\u91cc\u5982\u4f55\u5b9a\u4e49true\"<\/p>\n

\u5728Python\u4e2d\uff0cTrue<\/code> \u662f\u4e00\u4e2a\u5185\u7f6e\u5e38\u91cf\uff0c\u7528\u4e8e\u8868\u793a\u5e03\u5c14\u503c\u4e2d\u7684\u771f\u503c\u3002\u5728Python\u91cc\uff0c\u5b9a\u4e49 True<\/code> \u975e\u5e38\u7b80\u5355\uff1a\u4f7f\u7528\u5185\u7f6e\u5e38\u91cf True<\/code>\u3001\u8bbe\u7f6e\u4e3a\u4e0e1\u7b49\u4ef7\u7684\u503c\u3001\u4f7f\u7528\u5e03\u5c14\u8868\u8fbe\u5f0f<\/strong>\u3002\u5176\u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u4f7f\u7528\u5185\u7f6e\u5e38\u91cf True<\/code>\u3002<\/p>\n<\/p>\n

\u76f4\u63a5\u4f7f\u7528\u5185\u7f6e\u5e38\u91cf True<\/code><\/strong>\uff1a\u8fd9\u662f\u4e00\u79cd\u6700\u76f4\u63a5\u548c\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

is_valid = True<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u91cc\u7684 is_valid<\/code> \u53d8\u91cf\u88ab\u8d4b\u503c\u4e3a\u5e03\u5c14\u503c True<\/code>\u3002Python\u4e2d\u7684 True<\/code> \u548c False<\/code> \u662f\u5e03\u5c14\u503c\u7684\u4e24\u4e2a\u5e38\u91cf\uff0c\u4ee3\u8868\u5e03\u5c14\u4e0a\u4e0b\u6587\u4e2d\u7684\u771f\u503c\u548c\u5047\u503c\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u4f7f\u7528\u5185\u7f6e\u5e38\u91cf True<\/code><\/h3>\n<\/p>\n
Python\u5185\u7f6e\u5e38\u91cf True<\/code> \u662f\u5e03\u5c14\u503c\u7684\u57fa\u672c\u8868\u793a\u3002\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ea\u9700\u76f4\u63a5\u4f7f\u7528\u5b83\u5373\u53ef\uff1a<\/p>\n<\/p>\n
is_authenticated = True<\/p>\n
is_active = True<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cis_authenticated<\/code> \u548c is_active<\/code> \u90fd\u88ab\u5b9a\u4e49\u4e3a True<\/code>\u3002\u8fd9\u662f\u6700\u76f4\u63a5\u548c\u63a8\u8350\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u8bbe\u7f6e\u4e0e1\u7b49\u4ef7\u7684\u503c<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u5e03\u5c14\u503c True<\/code> \u7684\u6570\u503c\u7b49\u4ef7\u4e8e\u6574\u6570 1<\/code>\uff0c\u800c False<\/code> \u7b49\u4ef7\u4e8e\u6574\u6570 0<\/code>\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u53d8\u91cf\u7684\u503c\u4e3a 1<\/code> \u6765\u95f4\u63a5\u5b9a\u4e49 True<\/code>\uff1a<\/p>\n<\/p>\n
is_authenticated = 1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u5728\u903b\u8f91\u4e0a\u662f\u6b63\u786e\u7684\uff0c\u4f46\u5728\u7f16\u5199\u4ee3\u7801\u65f6\u4e0d\u63a8\u8350\u8fd9\u6837\u505a\uff0c\u56e0\u4e3a\u8fd9\u4f1a\u964d\u4f4e\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3002\u4f7f\u7528 True<\/code> \u548c False<\/code> \u4f5c\u4e3a\u5e03\u5c14\u503c\uff0c\u53ef\u4ee5\u8ba9\u4ee3\u7801\u66f4\u6e05\u6670\u548c\u6613\u4e8e\u7406\u89e3\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u5e03\u5c14\u8868\u8fbe\u5f0f<\/h3>\n<\/p>\n
\u5e03\u5c14\u8868\u8fbe\u5f0f\u662fPython\u4e2d\u53e6\u4e00\u79cd\u5b9a\u4e49 True<\/code> \u7684\u65b9\u6cd5\u3002\u5e03\u5c14\u8868\u8fbe\u5f0f\u7684\u7ed3\u679c\u8981\u4e48\u662f True<\/code>\uff0c\u8981\u4e48\u662f False<\/code>\uff1a<\/p>\n<\/p>\n
is_authenticated = (1 == 1)<\/p>\n
is_active = (5 > 3)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c(1 == 1)<\/code> \u548c (5 > 3)<\/code> \u90fd\u4f1a\u88ab\u8bc4\u4f30\u4e3a True<\/code>\uff0c\u56e0\u6b64 is_authenticated<\/code> \u548c is_active<\/code> \u88ab\u5b9a\u4e49\u4e3a True<\/code>\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5176\u4ed6\u5e03\u5c14\u8fd0\u7b97<\/h3>\n<\/p>\n
Python\u8fd8\u652f\u6301\u5176\u4ed6\u5e03\u5c14\u8fd0\u7b97\uff0c\u5982 and<\/code>\u3001or<\/code> \u548c not<\/code>\uff0c\u8fd9\u4e9b\u8fd0\u7b97\u4e5f\u53ef\u4ee5\u7528\u6765\u5b9a\u4e49\u5e03\u5c14\u503c\uff1a<\/p>\n<\/p>\n
is_authenticated = (1 == 1) and (2 > 1)<\/p>\n
is_active = not (3 < 2)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c(1 == 1) and (2 > 1)<\/code> \u4f1a\u88ab\u8bc4\u4f30\u4e3a True<\/code>\uff0c\u800c not (3 < 2)<\/code> \u4e5f\u4f1a\u88ab\u8bc4\u4f30\u4e3a True<\/code>\uff0c\u56e0\u6b64 is_authenticated<\/code> \u548c is_active<\/code> \u90fd\u88ab\u5b9a\u4e49\u4e3a True<\/code>\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4ece\u51fd\u6570\u8fd4\u56de\u5e03\u5c14\u503c<\/h3>\n<\/p>\n
\u5728\u5b9a\u4e49\u590d\u6742\u903b\u8f91\u65f6\uff0c\u60a8\u53ef\u4ee5\u4ece\u51fd\u6570\u8fd4\u56de\u5e03\u5c14\u503c\uff1a<\/p>\n<\/p>\n
def check_authentication(user):<\/p>\n
    return user.is_authenticated()<\/p>\n
is_authenticated = check_authentication(current_user)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0ccheck_authentication<\/code> \u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u8be5\u503c\u88ab\u8d4b\u7ed9 is_authenticated<\/code> \u53d8\u91cf\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528\u5e03\u5c14\u8f6c\u6362\u51fd\u6570<\/h3>\n<\/p>\n
Python \u63d0\u4f9b\u4e86 bool()<\/code> \u51fd\u6570\uff0c\u5c06\u4efb\u610f\u503c\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\uff1a<\/p>\n<\/p>\n
is_authenticated = bool(1)<\/p>\n
is_active = bool("non-empty string")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cbool(1)<\/code> \u548c bool("non-empty string")<\/code> \u90fd\u4f1a\u8fd4\u56de True<\/code>\uff0c\u56e0\u6b64 is_authenticated<\/code> \u548c is_active<\/code> \u88ab\u5b9a\u4e49\u4e3a True<\/code>\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4e0e\u6761\u4ef6\u8bed\u53e5\u7ed3\u5408\u4f7f\u7528<\/h3>\n<\/p>\n
\u5e03\u5c14\u503c True<\/code> \u5728\u6761\u4ef6\u8bed\u53e5\u4e2d\u975e\u5e38\u6709\u7528\uff1a<\/p>\n<\/p>\n
if is_authenticated:<\/p>\n
    print("User is authenticated")<\/p>\n
else:<\/p>\n
    print("User is not authenticated")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c is_authenticated<\/code> \u4e3a True<\/code>\uff0c\u5c06\u6253\u5370 "User is authenticated"\u3002<\/p>\n<\/p>\n
\u516b\u3001\u5728\u5217\u8868\u548c\u5b57\u5178\u4e2d\u4f7f\u7528\u5e03\u5c14\u503c<\/h3>\n<\/p>\n
\u5e03\u5c14\u503c True<\/code> \u4e5f\u53ef\u4ee5\u5728\u5217\u8868\u548c\u5b57\u5178\u4e2d\u4f7f\u7528\uff1a<\/p>\n<\/p>\n
permissions = {"admin": True, "user": False}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cpermissions<\/code> \u5b57\u5178\u5c06 True<\/code> \u548c False<\/code> \u7528\u4f5c\u503c\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u4f7f\u7528\u5e03\u5c14\u503c\u8fdb\u884c\u51fd\u6570\u53c2\u6570\u4f20\u9012<\/h3>\n<\/p>\n
\u5e03\u5c14\u503c True<\/code> \u53ef\u4ee5\u4f5c\u4e3a\u51fd\u6570\u53c2\u6570\u4f20\u9012\uff1a<\/p>\n<\/p>\n
def set_status(is_active):<\/p>\n
    if is_active:<\/p>\n
        print("Status is active")<\/p>\n
    else:<\/p>\n
        print("Status is inactive")<\/p>\n
set_status(True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cset_status<\/code> \u51fd\u6570\u63a5\u6536\u4e00\u4e2a\u5e03\u5c14\u503c\u53c2\u6570\uff0c\u5e76\u6839\u636e\u8be5\u503c\u6253\u5370\u4e0d\u540c\u7684\u6d88\u606f\u3002<\/p>\n<\/p>\n
\u5341\u3001\u4f7f\u7528\u5e03\u5c14\u503c\u8fdb\u884c\u6761\u4ef6\u8868\u8fbe\u5f0f<\/h3>\n<\/p>\n
\u5e03\u5c14\u503c True<\/code> \u53ef\u4ee5\u7528\u4e8e\u6761\u4ef6\u8868\u8fbe\u5f0f\uff08\u4e5f\u79f0\u4e3a\u4e09\u5143\u8fd0\u7b97\u7b26\uff09\uff1a<\/p>\n<\/p>\n
status = "active" if is_authenticated else "inactive"<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c is_authenticated<\/code> \u4e3a True<\/code>\uff0c\u5219 status<\/code> \u5c06\u88ab\u8d4b\u503c\u4e3a "active"\uff1b\u5426\u5219\uff0cstatus<\/code> \u5c06\u88ab\u8d4b\u503c\u4e3a "inactive"\u3002<\/p>\n<\/p>\n
\u603b\u4e4b\uff0cPython \u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u5b9a\u4e49\u548c\u4f7f\u7528\u5e03\u5c14\u503c True<\/code>\u3002\u6700\u5e38\u89c1\u548c\u63a8\u8350\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u4f7f\u7528\u5185\u7f6e\u5e38\u91cf True<\/code>\uff0c\u8fd9\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u548c\u6613\u4e8e\u7406\u89e3\u3002\u5728\u7f16\u5199\u4ee3\u7801\u65f6\uff0c\u59cb\u7ec8\u4f18\u5148\u8003\u8651\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u4f7f\u7528\u5e03\u5c14\u503c True<\/code> \u7684\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u60a8\u5728\u4e0d\u540c\u7684\u573a\u666f\u4e2d\u7f16\u5199\u66f4\u52a0\u7075\u6d3b\u548c\u9ad8\u6548\u7684\u4ee3\u7801\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5728Python\u4e2d\uff0c\u5982\u4f55\u5b9a\u4e49\u5e03\u5c14\u503cTrue\uff1f<\/strong>
\u5e03\u5c14\u503cTrue\u5728Python\u4e2d\u662f\u4e00\u4e2a\u5185\u7f6e\u5e38\u91cf\uff0c\u76f4\u63a5\u4f7f\u7528\u5373\u53ef\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u7b80\u5355\u7684\u8d4b\u503c\u8bed\u53e5\u5c06\u5176\u8d4b\u7ed9\u53d8\u91cf\uff0c\u4f8b\u5982 my_bool = True<\/code>\u3002\u5728\u6761\u4ef6\u5224\u65ad\u4e2d\uff0cTrue\u53ef\u7528\u4e8e\u63a7\u5236\u6d41\u7a0b\uff0c\u5982\u5728if\u8bed\u53e5\u4e2d\u3002<\/p>\n
\u5728Python\u4e2d\u53ef\u4ee5\u4f7f\u7528True\u7684\u573a\u666f\u6709\u54ea\u4e9b\uff1f<\/strong>
True\u5e38\u7528\u4e8e\u6761\u4ef6\u5224\u65ad\u3001\u5faa\u73af\u63a7\u5236\u548c\u51fd\u6570\u8fd4\u56de\u503c\u7b49\u573a\u666f\u3002\u5728if\u8bed\u53e5\u4e2d\uff0c\u5982\u679c\u6761\u4ef6\u4e3aTrue\uff0c\u5219\u6267\u884c\u76f8\u5e94\u7684\u4ee3\u7801\u5757\uff1b\u5728while\u5faa\u73af\u4e2d\uff0c\u6761\u4ef6\u4e3aTrue\u65f6\u4f1a\u6301\u7eed\u6267\u884c\u5faa\u73af\u4f53\uff1b\u51fd\u6570\u4e5f\u53ef\u4ee5\u8fd4\u56deTrue\u6765\u8868\u793a\u6210\u529f\u6216\u67d0\u79cd\u6761\u4ef6\u7684\u6ee1\u8db3\u3002<\/p>\n
\u5982\u4f55\u5728Python\u4e2d\u5224\u65ad\u4e00\u4e2a\u8868\u8fbe\u5f0f\u662f\u5426\u4e3aTrue\uff1f<\/strong>
\u4f60\u53ef\u4ee5\u4f7f\u7528if\u8bed\u53e5\u6765\u5224\u65ad\u4e00\u4e2a\u8868\u8fbe\u5f0f\u662f\u5426\u4e3aTrue\u3002\u4f8b\u5982\uff1aif expression:<\/code> \u8fd9\u79cd\u65b9\u5f0f\u4f1a\u5728expression\u7684\u7ed3\u679c\u4e3aTrue\u65f6\u6267\u884c\u76f8\u5e94\u7684\u4ee3\u7801\u5757\u3002\u6b64\u5916\uff0c\u4f7f\u7528bool()<\/code>\u51fd\u6570\u4e5f\u53ef\u4ee5\u5c06\u4efb\u4f55\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u6765\u8fdb\u884c\u5224\u65ad\uff0c\u6bd4\u5982 bool(my_variable)<\/code>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0cTrue \u662f\u4e00\u4e2a\u5185\u7f6e\u5e38\u91cf\uff0c\u7528\u4e8e\u8868\u793a\u5e03\u5c14\u503c\u4e2d\u7684\u771f\u503c\u3002\u5728Python\u91cc\uff0c\u5b9a\u4e49 True \u975e\u5e38\u7b80\u5355 […]","protected":false},"author":3,"featured_media":1154952,"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\/1154945"}],"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=1154945"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1154945\/revisions"}],"predecessor-version":[{"id":1154953,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1154945\/revisions\/1154953"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1154952"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1154945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1154945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1154945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}