2.1 \u5e03\u5c14\u503c<\/strong><\/span><\/div>\n
\u5e03\u5c14\u6570\u636e\u7c7b\u578b\u6709\u4e24\u79cd\u503c\uff1aTrue \u548c False<\/p>\n
2.2 <\/strong>if\u8bed\u53e5<\/strong><\/strong><\/span><\/div>\n
if\u8bed\u53e5\u5305\u542b\u4ee5\u4e0b\u90e8\u5206\uff1a<\/p>\n
\n
if\u5173\u952e\u5b57<\/li>\n
\u6761\u4ef6\uff08\u5373\u6c42\u503c\u4e3aTrue or False\uff09<\/li>\n
\u5192\u53f7<\/li>\n
\u5728\u4e0b\u4e00\u884c\u5f00\u59cb\uff0c\u7f29\u8fdb\u4ee3\u7801\u5757<\/li>\n<\/ul>\n
2.3 while\u5faa\u73af\u8bed\u53e5<\/strong><\/strong><\/span><\/div>\n
while\u5faa\u73af\u8bed\u53e5\u603b\u662f\u5305\u542b\u4e0b\u9762\u7684\u90e8\u5206\uff1a<\/p>\n
\n
\u5173\u952e\u5b57<\/li>\n
\u6761\u4ef6<\/li>\n
\u5192\u53f7<\/li>\n
\u4ece\u65b0\u884c\u5f00\u59cb\uff0c\u7f29\u8fdb\u7684\u4ee3\u7801\u5757\uff08\u79f0\u4e3awhile\u7684\u5b50\u53e5\uff09<\/li>\n<\/ul>\n
\u3010\u6ce8\u3011\u53ef\u4ee5\u770b\u5230while\u8bed\u53e5\u770b\u8d77\u6765\u548cif\u8bed\u53e5\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u4ed6\u4eec\u7684\u884c\u4e3a\u3002if\u5b50\u53e5\u7ed3\u675f\u65f6\uff0c\u7a0b\u5e8f\u7ee7\u7eed\u6267\u884cif\u4e4b\u540e\u7684\u8bed\u53e5\uff0c\u4f46\u5728while\u5b50\u53e5\u7ed3\u675f\u65f6\uff0c\u7a0b\u5e8f\u6267\u884c\u8df3\u56de\u5230while\u8bed\u53e5\u5f00\u59cb\u5904\u3002<\/p>\n
#if \u8bed\u53e5<\/span><\/span>\r\n>><\/span>> spam = 0<\/span>\r\n>><\/span>> if spam < 5<\/span>:\r\n\tprint('hello,world'<\/span>)\r\n\tspam = spam + 1<\/span>\r\n\r\nhello,world\r\n\r\n#while \u8bed\u53e5<\/span><\/span>\r\n>><\/span>> spam = 0<\/span>\r\n>><\/span>> while spam <5<\/span> :\r\n\tprint('hello,world'<\/span>)\r\n\tspam = spam +1<\/span>\r\n\r\nhello,world\r\nhello,world\r\nhello,world\r\nhello,world\r\nhello,world\r\n<\/code><\/pre>\n2.4 break\u8bed\u53e5<\/strong><\/strong><\/span><\/div>\n\u5728while\u5faa\u73af\u7684\u5b50\u53e5\u4e2d\uff0c\u5982\u679c\u6267\u884c\u9047\u5230break\u8bed\u53e5\u5c31\u4f1a\u9a6c\u4e0a\u9000\u51fawhile\u5faa\u73af\u3002<\/p>\n 2.5 continue\u8bed\u53e5<\/strong><\/strong><\/span><\/div>\ncontinue\u8bed\u53e5\u540c\u6837\u7528\u4e8ewhile\u5faa\u73af\u5185\u90e8\uff0c\u5982\u679c\u7a0b\u5e8f\u6267\u884c\u4e2d\u9047\u5230continue\u8bed\u53e5\uff0c\u5c31\u4f1a\u9a6c\u4e0a\u8df3\u8f6c\u5230\u5faa\u73af\u5f00\u59cb\u5904\uff0c\u91cd\u65b0\u5bf9\u5faa\u73af\u6761\u4ef6\u8fdb\u884c\u6c42\u503c\u3002<\/p>\n 2.6 for\u5faa\u73af\u548crange()\u51fd\u6570<\/strong><\/strong><\/span><\/div>\n\u5728\u7528\u4e8e\u6761\u4ef6\u65f6\uff0c0\u30010.0\u3001''\uff08\u7a7a\u5b57\u7b26\u4e32\uff09\u88ab\u8ba4\u4e3a\u662fFalse\uff0c\u5176\u4ed6\u503c\u88ab\u8ba4\u4e3a\u662fTrue<\/p>\n \u5728\u4ee3\u7801\u4e2d\uff0cfor\u8bed\u53e5\u770b\u8d77\u6765\u50cf for i in range(5):\u8fd9\u6837\uff0c\u603b\u662f\u5305\u542b\u4ee5\u4e0b\u90e8\u5206\uff1a<\/p>\n \nfor\u5173\u952e\u5b57<\/li>\n \u4e00\u4e2a\u53d8\u91cf\u540d<\/li>\n in\u5173\u952e\u5b57<\/li>\n \u8c03\u7528range()\u65b9\u6cd5\uff0c\u6700\u591a\u4f20\u5165\u4e09\u4e2a\u53c2\u6570<\/li>\n \u5192\u53f7<\/li>\n \u4ece\u4e0b\u4e00\u884c\u5f00\u59cb\uff0c\u7f29\u8fdb\u7684\u4ee3\u7801\u5757<\/li>\n<\/ul>\n2.7 range()\u7684\u5f00\u59cb\u3001\u505c\u6b62\u548c\u6b65\u957f\u53c2\u6570<\/strong><\/strong><\/span><\/div>\nrange()\u51fd\u6570\u53ef\u4ee5\u6709\u4e09\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u4e3a\u8d77\u59cb\u503c\u3001\u7b2c\u4e8c\u4e2a\u4e3a\u7ec8\u6b62\u503c\u3001\u7b2c\u4e09\u4e2a\u4e3a\u6b65\u957f\uff0c\u6b65\u957f\u5c31\u662f\u6bcf\u6b21\u8fed\u4ee3\u540e\u5faa\u73af\u53d8\u91cf\u589e\u52a0\u7684\u503c\u3002\u5f53\u7136\uff0c\u8d1f\u6570\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u6b65\u957f\u53c2\u6570\uff0c\u8ba9\u5faa\u73af\u8ba1\u6570\u9010\u6e10\u51cf\u5c11\uff0c\u800c\u4e0d\u662f\u589e\u52a0.<\/p>\n >>> for<\/span> i in<\/span> range (12<\/span>,16<\/span>):\r\n\tprint(i)\r\n\r\n12<\/span>\r\n13<\/span>\r\n14<\/span>\r\n15<\/span>\r\n>>> for<\/span> i in<\/span> range(0<\/span>,10<\/span>,1<\/span>):\r\n\tprint(i)\r\n\r\n0<\/span>\r\n1<\/span>\r\n2<\/span>\r\n3<\/span>\r\n4<\/span>\r\n5<\/span>\r\n6<\/span>\r\n7<\/span>\r\n8<\/span>\r\n9<\/span>\r\n>>> for<\/span> i in<\/span> range(5<\/span>,-1<\/span>,-1<\/span>):\r\n\tprint(i)\r\n\r\n5<\/span>\r\n4<\/span>\r\n3<\/span>\r\n2<\/span>\r\n1<\/span>\r\n0<\/span>\r\n>>> \r\n<\/code><\/pre>\n2.8 \u5bfc\u5165\u6a21\u5757<\/strong><\/strong><\/span><\/div>\npython\u7a0b\u5e8f\u53ef\u4ee5\u8c03\u7528\u4e00\u7ec4\u57fa\u672c\u7684\u51fd\u6570\uff0c\u8fd9\u79f0\u4e3a\u201c\u5185\u5efa\u51fd\u6570\u201d\uff0cpython\u4e5f\u5305\u542b\u4e00\u7ec4\u6a21\u5757\uff0c\u79f0\u4e3a\u201c\u6807\u51c6\u5e93\u201d\u6bcf\u4e2a\u6a21\u5757\u90fd\u662f\u4e00\u4e2apython\u7a0b\u5e8f\uff0c\u5305\u542b\u4e00\u7ec4\u76f8\u5173\u7684\u51fd\u6570\uff0c\u53ef\u4ee5\u5d4c\u5165\u4f60\u7684\u7a0b\u5e8f\u4e4b\u4e2d\u3002<\/p>\n \u5728\u4f7f\u7528\u4e00\u4e2a\u6a21\u5757\u4e2d\u7684\u51fd\u6570\u4e4b\u524d\uff0c\u5fc5\u987b\u7528import\u8bed\u53e5\u5bfc\u5165\u8be5\u6a21\u5757\u3002<\/p>\n import\u8bed\u53e5\u5305\u542b\u4ee5\u4e0b\u90e8\u5206\uff1a<\/p>\n \nimport\u5173\u952e\u5b57<\/li>\n \u6a21\u5757\u540d\u79f0<\/li>\n \u53ef\u9009\u7684\u66f4\u591a\u7684\u6a21\u5757\u540d\u79f0\uff0c\u4e4b\u95f4\u7528\u9017\u53f7\u9694\u5f00<\/li>\n<\/ul>\n>>> import<\/span> random\r\n>>> for<\/span> i in<\/span> range(5<\/span>):\r\n\tprint(random.randint(1<\/span>,10<\/span>))\r\n\r\n6<\/span>\r\n1<\/span>\r\n9<\/span>\r\n1<\/span>\r\n4<\/span>\r\n<\/code><\/pre>\n2.9 sys.exit()\u63d0\u524d\u7ed3\u675f\u7a0b\u5e8f<\/strong><\/strong><\/span><\/div>\n\u5f53\u7a0b\u5e8f\u6267\u884c\u5230\u6307\u4ee4\u7684\u5e95\u90e8\u65f6\uff0c\u53ea\u662f\u4f1a\u7ec8\u6b62\u3002\u4f46\u662f\u901a\u8fc7\u8c03\u7528sys.exit()\u51fd\u6570\uff0c\u53ef\u4ee5\u8ba9\u7a0b\u5e8f\u7ec8\u6b62\u6216\u8005\u9000\u51fa\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u51fd\u6570\u5728sys\u6a21\u5757\u4e2d\uff0c\u6240\u4ee5\u5fc5\u987b\u5148\u5bfc\u5165sys\uff0c\u624d\u80fd\u4f7f\u7528\u5b83\u3002<\/p>\n >>> import sys\r\n>>> while<\/span> True:\r\n\tprint('typle exit to exit.'<\/span>)\r\n\tresponse =input()\r\n\tif<\/span> response == 'exit'<\/span>:\r\n\t\tsys.exit<\/span>()\r\n\tprint('you typed'<\/span> + response +'.'<\/span>)\r\n\r\ntyple exit<\/span> to exit<\/span>.\r\nexit<\/span>\r\n>>> \r\n<\/code><\/pre>\n\u3010\u6ce8\u3011<\/p>\n \n\u5e03\u5c14\u64cd\u4f5c\u7b26\u6709 and \u3001 or\u3001not<\/li>\n \u6761\u4ef6\u662f\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u5b83\u7528\u4e8e\u63a7\u5236\u6d41\u8bed\u53e5\uff0c\u6c42\u503c\u4e3a\u5e03\u5c14\u503c\u3002<\/li>\n<\/ul>\n\u4ee3\u7801\u5757<\/strong>\uff1a\u4e00\u4e9b\u4ee3\u7801\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u7ec4\uff0c\u653e\u5728\u201c\u4ee3\u7801\u5757\u201d\u4e2d\uff0c\u4ed6\u6709\u4e09\u6761\u89c4\u5219\uff1a<\/p>\n \n\u7f29\u8fdb\u589e\u52a0\u65f6\uff0c\u4ee3\u7801\u5757\u5f00\u59cb<\/li>\n \u4ee3\u7801\u5757\u53ef\u4ee5\u5305\u542b\u5176\u4ed6\u4ee3\u7801\u5757<\/li>\n \u7f29\u8fdb\u51cf\u5c11\u4e3a\u96f6\uff0c\u6216\u51cf\u5c11\u4e3a\u5916\u9762\u5305\u56f4\u7684\u4ee3\u7801\u5757\u7684\u7f29\u8fdb\uff0c\u4ee3\u7801\u5757\u5c31\u7ed3\u675f\u4e86<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"\u5e03\u5c14\u6570\u636e\u7c7b\u578b\u6709\u4e24\u79cd\u503c\uff1aTrue \u548c False if\u8bed\u53e5\u5305\u542b\u4ee5\u4e0b\u90e8\u5206\uff1a if\u5173\u952e\u5b57 \u6761\u4ef6\uff08\u5373\u6c42\u503c\u4e3aTrue o […]<\/p>\n","protected":false},"author":1476,"featured_media":148675,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-148642","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/148642","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/1476"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=148642"}],"version-history":[{"count":4,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/148642\/revisions"}],"predecessor-version":[{"id":148772,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/148642\/revisions\/148772"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/148675"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=148642"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=148642"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=148642"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}