![\"python\u5982\u4f55\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u4e0d\u662f\u6570\u5b57\"](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24182736\/f585ca7c-1e6b-4c80-b59c-cad81c73308d.webp\")
<\/p>\n<\/p>\n
Python\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528str.isdigit()\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u5c1d\u8bd5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\u7b49\uff0c\u5176\u4e2dstr.isdigit()\u65b9\u6cd5\u6700\u7b80\u5355\u3001\u76f4\u89c2\u3001\u5e38\u7528\u3002<\/strong> \u4e0b\u9762\u5c06\u8be6\u7ec6\u89e3\u91castr.isdigit()\u65b9\u6cd5\u7684\u4f7f\u7528\u3002<\/p>\n<\/p>\n str.isdigit()\u65b9\u6cd5\u662fPython\u5185\u7f6e\u7684\u5b57\u7b26\u4e32\u65b9\u6cd5\uff0c\u7528\u6765\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u6570\u5b57\u5b57\u7b26\u3002\u8fd9\u4e2a\u65b9\u6cd5\u53ea\u9002\u7528\u4e8e\u5168\u662f\u6570\u5b57\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u4e0d\u5305\u62ec\u5c0f\u6570\u70b9\u3001\u8d1f\u53f7\u7b49\u3002\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u8c03\u7528\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684isdigit()\u65b9\u6cd5\u5373\u53ef\u3002\u5982\u679c\u5b57\u7b26\u4e32\u53ea\u5305\u542b\u6570\u5b57\u5b57\u7b26\uff0c\u8fd4\u56deTrue\uff1b\u5426\u5219\u8fd4\u56deFalse\u3002<\/p>\n<\/p>\n if s.isdigit():<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n str.isdigit()\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u7279\u522b\u9002\u7528\u4e8e\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u7531\u7eaf\u6570\u5b57\u5b57\u7b26\u7ec4\u6210\u3002\u5b83\u7684\u4e3b\u8981\u4f18\u70b9\u662f\u7b80\u6d01\u3001\u6613\u7528\uff0c\u4f46\u4e5f\u6709\u5176\u5c40\u9650\u6027\uff0c\u6bd4\u5982\u4e0d\u80fd\u8bc6\u522b\u5c0f\u6570\u3001\u8d1f\u6570\u7b49\u3002<\/p>\n<\/p>\n isdigit()\u65b9\u6cd5\u53ea\u9700\u8981\u8c03\u7528\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684\u8fd9\u4e00\u4e2a\u65b9\u6cd5\u5373\u53ef\uff0c\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<\/p>\n if s.isdigit():<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cisdigit()\u65b9\u6cd5\u53ea\u80fd\u5224\u65ad\u7eaf\u6570\u5b57\u5b57\u7b26\uff0c\u5bf9\u4e8e\u5305\u542b\u5c0f\u6570\u70b9\u3001\u8d1f\u53f7\u7b49\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u5b83\u4f1a\u8fd4\u56deFalse\u3002<\/p>\n<\/p>\n if s.isdigit():<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u4e0eisdigit()\u65b9\u6cd5\u7c7b\u4f3c\uff0cstr.isnumeric()\u65b9\u6cd5\u4e5f\u7528\u4e8e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u6570\u5b57\u5b57\u7b26\uff0c\u4f46\u5b83\u7684\u8303\u56f4\u66f4\u5e7f\u3002\u9664\u4e86\u963f\u62c9\u4f2f\u6570\u5b57\u5b57\u7b26\u5916\uff0c\u5b83\u8fd8\u5305\u62ec\u4e86\u5176\u4ed6\u4e00\u4e9b\u6570\u5b57\u5b57\u7b26\uff0c\u6bd4\u5982\u7f57\u9a6c\u6570\u5b57\u3001\u6c49\u5b57\u6570\u5b57\u7b49\u3002<\/p>\n<\/p>\n isnumeric()\u65b9\u6cd5\u7684\u4f7f\u7528\u65b9\u5f0f\u4e0eisdigit()\u65b9\u6cd5\u7c7b\u4f3c\u3002<\/p>\n<\/p>\n if s.isnumeric():<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u5c3d\u7ba1isnumeric()\u7684\u8303\u56f4\u66f4\u5e7f\uff0c\u4f46\u540c\u6837\u65e0\u6cd5\u5904\u7406\u5c0f\u6570\u70b9\u3001\u8d1f\u53f7\u7b49\u60c5\u51b5\u3002<\/p>\n<\/p>\n if s.isnumeric():<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n str.isdecimal()\u65b9\u6cd5\u7528\u4e8e\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u5341\u8fdb\u5236\u5b57\u7b26\uff0c\u53730-9\u7684\u6570\u5b57\u5b57\u7b26\u3002\u5b83\u7684\u8303\u56f4\u6bd4isnumeric()\u65b9\u6cd5\u66f4\u7a84\uff0c\u4f46\u6bd4isdigit()\u65b9\u6cd5\u7a0d\u5fae\u5e7f\u4e00\u4e9b\uff0c\u56e0\u4e3a\u5b83\u4e5f\u80fd\u8bc6\u522b\u4e00\u4e9b\u5176\u4ed6\u7684\u5341\u8fdb\u5236\u5b57\u7b26\u3002<\/p>\n<\/p>\n isdecimal()\u65b9\u6cd5\u4e0e\u524d\u4e24\u4e2a\u65b9\u6cd5\u7684\u4f7f\u7528\u65b9\u5f0f\u76f8\u540c\u3002<\/p>\n<\/p>\n if s.isdecimal():<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n isdecimal()\u65b9\u6cd5\u540c\u6837\u65e0\u6cd5\u5904\u7406\u5c0f\u6570\u70b9\u3001\u8d1f\u53f7\u7b49\u7279\u6b8a\u60c5\u51b5\u3002<\/p>\n<\/p>\n if s.isdecimal():<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5b57\u7b26\u4e32\u5904\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u975e\u5e38\u7075\u6d3b\u5730\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u3002\u901a\u8fc7\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u53ef\u4ee5\u5904\u7406\u66f4\u591a\u590d\u6742\u7684\u60c5\u51b5\uff0c\u6bd4\u5982\u5c0f\u6570\u3001\u8d1f\u6570\u7b49\u3002<\/p>\n<\/p>\n \u4f7f\u7528re\u6a21\u5757\u7684match()\u51fd\u6570\u53ef\u4ee5\u5b9e\u73b0\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u3002<\/p>\n<\/p>\n s = "123.45"<\/p>\n if re.match(r"^-?\\d+(\\.\\d+)?$", s):<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u901a\u8fc7\u6b63\u5219\u8868\u8fbe\u5f0f\u53ef\u4ee5\u5904\u7406\u66f4\u591a\u590d\u6742\u60c5\u51b5\uff0c\u6bd4\u5982\u8d1f\u6570\u3001\u5c0f\u6570\u7b49\u3002<\/p>\n<\/p>\n if re.match(r"^-?\\d+(\\.\\d+)?$", s):<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n else:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u53e6\u4e00\u79cd\u5224\u65ad\u65b9\u6cd5\u662f\u5c1d\u8bd5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\uff0c\u5982\u679c\u8f6c\u6362\u6210\u529f\u5219\u8bf4\u660e\u5b57\u7b26\u4e32\u662f\u6570\u5b57\uff0c\u5426\u5219\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<\/p>\n \u53ef\u4ee5\u4f7f\u7528try-except\u5757\u6765\u5b9e\u73b0\u8fd9\u79cd\u65b9\u6cd5\u3002<\/p>\n<\/p>\n try:<\/p>\n float(s)<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n except ValueError:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u8fd9\u79cd\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u8d1f\u6570\u3001\u5c0f\u6570\u7b49\u60c5\u51b5\u3002<\/p>\n<\/p>\n try:<\/p>\n float(s)<\/p>\n print("\u5b57\u7b26\u4e32\u662f\u6570\u5b57")<\/p>\n except ValueError:<\/p>\n print("\u5b57\u7b26\u4e32\u4e0d\u662f\u6570\u5b57")<\/p>\n <\/code><\/pre>\n<\/p>\n \u901a\u8fc7\u4ee5\u4e0a\u51e0\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\u3002str.isdigit()\u65b9\u6cd5\u7b80\u5355\u3001\u76f4\u89c2\u3001\u5e38\u7528\uff0c\u9002\u7528\u4e8e\u7eaf\u6570\u5b57\u5b57\u7b26\u7684\u60c5\u51b5\uff1b\u6b63\u5219\u8868\u8fbe\u5f0f\u548c\u5c1d\u8bd5\u8f6c\u6362\u4e3a\u6570\u5b57\u7684\u65b9\u6cd5\u5219\u66f4\u4e3a\u7075\u6d3b\uff0c\u9002\u7528\u4e8e\u5904\u7406\u8d1f\u6570\u3001\u5c0f\u6570\u7b49\u590d\u6742\u60c5\u51b5\u3002<\/strong><\/p>\n<\/p>\n \u7ed3\u5408\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n<\/p>\n \u5982\u4f55\u5728Python\u4e2d\u68c0\u67e5\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6709\u6548\u7684\u6570\u5b57\uff1f<\/strong> Python\u4e2d\u662f\u5426\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u6570\u5b57\uff1f<\/strong> \u5982\u4f55\u5904\u7406\u5305\u542b\u7a7a\u683c\u6216\u5176\u4ed6\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff1f<\/strong> \u5728Python\u4e2d\uff0c\u5982\u4f55\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u662f\u6570\u5b57\u7684\u540c\u65f6\u5904\u7406\u4e0d\u540c\u7684\u6570\u5b57\u683c\u5f0f\uff1f<\/strong>str.isdigit()\u65b9\u6cd5<\/h3>\n<\/p>\n
s = "12345"<\/p>\n\u4e00\u3001str.isdigit()\u65b9\u6cd5\u7684\u4f7f\u7528<\/h3>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
s = "6789"<\/p>\n2\u3001\u5c40\u9650\u6027<\/h4>\n<\/p>\n
s = "-123"<\/p>\n\u4e8c\u3001str.isnumeric()\u65b9\u6cd5<\/h3>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
s = "\u4e00\u4e8c\u4e09\u56db"<\/p>\n2\u3001\u5c40\u9650\u6027<\/h4>\n<\/p>\n
s = "3.14"<\/p>\n\u4e09\u3001str.isdecimal()\u65b9\u6cd5<\/h3>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
s = "0123"<\/p>\n2\u3001\u5c40\u9650\u6027<\/h4>\n<\/p>\n
s = "-456"<\/p>\n\u56db\u3001\u6b63\u5219\u8868\u8fbe\u5f0f<\/h3>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
import re<\/p>\n2\u3001\u5904\u7406\u590d\u6742\u60c5\u51b5<\/h4>\n<\/p>\n
s = "-789.01"<\/p>\n\u4e94\u3001\u5c1d\u8bd5\u8f6c\u6362\u4e3a\u6570\u5b57<\/h3>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h4>\n<\/p>\n
s = "456"<\/p>\n2\u3001\u5904\u7406\u590d\u6742\u60c5\u51b5<\/h4>\n<\/p>\n
s = "-123.45"<\/p>\n\u516d\u3001\u7ed3\u8bba<\/h3>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684str.isdigit()<\/code>\u65b9\u6cd5\u6765\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u6570\u5b57\u5b57\u7b26\u3002\u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56de\u5e03\u5c14\u503cTrue<\/code>\u6216False<\/code>\uff0c\u5982\u679c\u5b57\u7b26\u4e32\u4e2d\u5305\u542b\u4efb\u4f55\u975e\u6570\u5b57\u5b57\u7b26\uff0c\u5219\u8fd4\u56deFalse<\/code>\u3002\u7136\u800c\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u53ea\u9002\u7528\u4e8e\u6b63\u6574\u6570\u3002<\/p>\n
\u9664\u4e86\u4f7f\u7528str.isdigit()<\/code>\uff0c\u53ef\u4ee5\u4f7f\u7528try<\/code>\u548cexcept<\/code>\u8bed\u53e5\u7ed3\u5408float()<\/code>\u51fd\u6570\u6765\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u53ef\u4ee5\u8f6c\u6362\u4e3a\u6570\u5b57\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5904\u7406\u6574\u6570\u3001\u6d6e\u70b9\u6570\u4ee5\u53ca\u8d1f\u6570\u3002\u4f8b\u5982\uff0cfloat("123.45")<\/code>\u4f1a\u6210\u529f\u800cfloat("abc")<\/code>\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002<\/p>\n
\u5982\u679c\u5b57\u7b26\u4e32\u5305\u542b\u7a7a\u683c\u6216\u5176\u4ed6\u975e\u6570\u5b57\u5b57\u7b26\uff0c\u4f7f\u7528str.strip()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5148\u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7a7a\u683c\u3002\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u65b9\u6cd5\u6765\u5224\u65ad\u662f\u5426\u4e3a\u6570\u5b57\u3002\u6b64\u5916\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u4e5f\u53ef\u4ee5\u7528\u4e8e\u66f4\u590d\u6742\u7684\u5224\u65ad\uff0c\u4f8b\u5982\u5339\u914d\u6570\u5b57\u3001\u8d1f\u53f7\u548c\u5c0f\u6570\u70b9\u3002<\/p>\n
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