python中的while循环可以做什么东西？ python里面while循环是怎么循环的？
python\u4e2d\u7684while Ture\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f\u9898\u4e3b\u4f60\u597d,
\u9996\u5148\u8981\u4e86\u89e3\u5728python\u4e2d, while\u662f\u7528\u6765\u5904\u7406\u5faa\u73af\u7ed3\u6784\u7684,\u57fa\u672c\u8bed\u6cd5\u4e3a:
while \u6761\u4ef6:
\u6761\u4ef6\u6210\u7acb\u540e\u6267\u884c\u7684\u8bed\u53e5\u5757
\u4e3e\u4e2a\u4f8b\u5b50:
-----
a = 0
while a < 3:
print(a)
a += 1
print('\u6267\u884c\u7ed3\u675f!')
-----
\u4e0a\u9762\u4ee3\u7801\u5b9a\u9996\u5148\u5b9a\u4e49\u4e86\u4e00\u4e2a\u53d8\u91cfa, \u5e76\u8d4b\u521d\u59cb\u503c\u4e3a0; \u7d27\u63a5\u7740\u5c31\u662f\u4e00\u4e2awhile\u5faa\u73af, while\u5faa\u73af\u6761\u4ef6\u4e3a a < 3; while\u5faa\u73af\u7684\u8bed\u53e5\u4f53\u4e2d\u6709\u4e24\u6761\u8bed\u53e5 print(a)\u548c a += 1, \u4e5f\u5c31\u662f\u8bf4\u5f53 a < 3\u8fd9\u4e2a\u6761\u4ef6\u6210\u7acb\u65f6, \u5c31\u4f1a\u6267\u884cprint(a)\u548ca +=1\u8fd92\u6761\u8bed\u53e5. \u63a5\u4e0b\u6765\u6211\u4eec\u770b\u6267\u884c\u8fc7\u7a0b:
\u9996\u5148 a = 0 \u6267\u884c\u540e, \u6211\u4eec\u5f97\u5230\u4e86\u4e00\u4e2a\u503c\u4e3a0\u7684\u53d8\u91cfa;
\u7d27\u63a5\u7740\u5904\u7406while\u5faa\u73af, \u5148\u5224\u65ad a < 3\u662f\u5426\u6210\u7acb, \u56e0\u4e3aa\u6b64\u65f6\u7b49\u4e8e0, \u800c 0 < 3, \u6240\u4ee5 a<3\u8fd9\u4e2a\u6761\u4ef6\u662f\u6210\u7acb\u7684, \u56e0\u4e3a\u6267\u884c\u4e00\u6b21print(a), \u6b64\u65f6\u5c4f\u5e55\u4e0a\u8f93\u51fa\u4e86\u7b2c\u4e00\u4e2a\u503c: 0, \u63a5\u7740\u5904\u7406 a += 1, \u8fd9\u6761\u8bed\u53e5\u6267\u884c\u540e a\u7684\u503c\u75310\u53d8\u4e3a\u4e861.
\u7136\u540e\u518d\u56de\u5230while\u5faa\u73af\u7684\u6761\u4ef6\u90e8\u5206, \u770b\u770b\u73b0\u5728\u662f\u5426\u8fd8\u6210\u7acb, \u56e0\u4e3a 1<3,, \u6240\u4ee5 a<3\u8fd9\u4e2a\u6761\u4ef6\u73b0\u5728\u8fd8\u662f\u6210\u7acb\u7684, \u63a5\u7740\u6267\u884cwhile\u5faa\u73af\u8bed\u53e5\u5757\u4e2d\u7684print(a), \u6b64\u65f6\u5f97\u5230\u7b2c2\u4e2a\u8f93\u51fa\u503c: 1, \u63a5\u7740\u6267\u884c a += 1, \u6b64\u65f6a\u7684\u503c\u75311\u53d8\u4e3a\u4e862.
\u518d\u56de\u5230while\u5faa\u73af\u7684\u6761\u4ef6\u90e8\u5206, \u8fd8\u662f\u770b\u6761\u4ef6\u662f\u5426\u6210\u7acb, \u56e0\u4e3a2 < 3, \u6240\u4ee5 a<3\u8fd9\u4e2a\u6761\u4ef6\u6210\u7acb, \u56e0\u4e3a\u8fd8\u8981\u6267\u884cwhile\u4e2d\u7684\u8bed\u53e5\u5757, print(a), \u6b64\u65f6\u5f97\u5230\u7b2c3\u4e2a\u8f93\u51fa\u503c: 2, \u518d\u6267\u884c a +=1, a\u7684\u503c\u75312\u53d8\u4e3a\u4e863.
\u540c\u7406, \u518d\u56de\u53bb\u770bwhile\u5faa\u73af\u7684\u6761\u4ef6\u90e8\u5206, \u56e0\u4e3a 3<3\u4e0d\u6210\u7acb, \u6240\u4ee5\u5230\u6b64while\u5faa\u73af\u7ed3\u675f\u4e86, \u8df3\u51fawhile\u5faa\u73af\u7ee7\u7eed\u5411\u4e0b\u6267\u884cprint("\u6267\u884c\u7ed3\u675f!"), \u6b64\u65f6\u5f97\u5230\u7b2c4\u4e2a\u8f93\u51fa\u503c: "\u6267\u884c\u7ed3\u675f"
\u5230\u6b64\u4e0a\u9762\u7684\u4ee3\u7801\u5c31\u7b97\u6267\u884c\u5b8c\u4e86
*.\u4e0a\u97626\u6b65\u7684\u8be6\u7ec6\u8fc7\u7a0b\u662f\u4e3a\u4e86\u8ba9\u9898\u4e3b\u4e86\u89e3, while\u5faa\u73af\u8bed\u53e5\u7684\u6267\u884c\u8fc7\u7a0b, \u8fd9\u4e2a\u8fc7\u7a0b\u7406\u987a\u4e86,\u9898\u4e3b\u63d0\u7684\u95ee\u9898\u4e5f\u5c31\u660e\u767d\u4e86
--------------
\u7ffb\u8fc7\u6765\u518d\u770b\u9898\u4e3b\u7684\u95ee\u9898:
while True\u7684\u4f5c\u7528?
\u4ece\u4e0a\u9762\u5bf9\u4f8b\u5b50\u7684\u8be6\u7ec6\u4e2d\u53ef\u4ee5\u77e5\u9053, \u7531\u4e8ewhile\u5faa\u73af\u8bed\u53e5\u7684\u6761\u4ef6\u90e8\u5206\u4e3aTrue, \u5373\u6c38\u8fdc\u6210\u7acb, \u6240\u4ee5\u4f1a\u4e0d\u65ad\u7684\u6267\u884cwhile\u5faa\u73af\u7684\u8bed\u53e5\u4f53.
\u4e3e\u4f8b\u6765\u8bf4:
-----
a = 0
while True:
print(a)
a += 1
print("\u8fd9\u53e5\u6c38\u8fdc\u4e0d\u4f1a\u88ab\u6267\u884c!")
-----
\u6211\u5c31\u4e0d\u8be6\u8ff0\u6574\u4e2a\u6267\u884c\u8fc7\u7a0b\u4e86, \u5149\u770bwhile\u5faa\u73af\u8bed\u53e5\u90e8\u5206, \u7531\u4e8e\u6bcf\u6b21\u56de\u5230while\u7684\u6761\u4ef6\u90e8\u5206\u5f97\u5230\u7684\u90fd\u662f\u6210\u7acb\u7684\u7ed3\u679c, \u6240\u4ee5\u4f1a\u4e00\u76f4\u8f93\u51fa 0, 1, 2...\u5c31\u8fd9\u6837\u4e00\u76f4\u8f93\u51fa,\u4e0d\u4f1a\u505c\u6b62.
\u5199\u5728\u6700\u540e: \u5f53\u7136while True\u8fd9\u79cd\u8bed\u53e5, \u4e00\u822c\u90fd\u662f\u4f34\u968f\u7740, break\u8fd9\u79cd\u8bed\u53e5\u7684,\u4e5f\u5c31\u662f\u8bf4\u5728\u5faa\u73af\u8bed\u53e5\u4e2d\u52a0\u4e0a\u5224\u65ad\u6761\u4ef6, \u6761\u4ef6\u6ee1\u8db3\u5c31\u6267\u884cbreak\u4ece\u800c\u8df3\u51fa\u5faa\u73af. \u5426\u5219\u6b7b\u5faa\u73af\u4e00\u822c\u60c5\u51b5\u4e0b\u662f\u6ca1\u610f\u4e49\u7684.
\u5e0c\u671b\u53ef\u4ee5\u5e2e\u5230\u9898\u4e3b, \u6b22\u8fce\u8ffd\u95ee
1.
input\u51fd\u6570\u4f1a\u628a\u4f60\u7684\u8f93\u5165\u89e3\u8bfb\u4e3a\u5b57\u7b26\u4e32\uff0c\u4e0d\u80fd\u7528\u6765\u4f5c\u4e3awhile\u7684\u5224\u5b9a\u6761\u4ef6\u3002
\u4f46\u662f\u8fd9\u91cc\u53ea\u662f\u4f60\u53ef\u80fd\u54ea\u91cc\u4ee3\u7801\u6572\u9519\u4e86\uff0c\u6211\u8dd1\u4e86\u4e00\u904d\uff0c\u6ca1\u6709\u95ee\u9898\uff0c\u8f93\u5165\u6570\u662f\u5b8c\u5168\u53ef\u4ee5\u7684\u3002\u8fd9\u91cc\u5199\u7684\u4e24\u53e5
temp=('xxx')
guess=int(temp)\u5c31\u662f\u4e3a\u4e86\u628a\u8f93\u5165\u7684\u4efb\u4f55\u4e1c\u897f\u7528int\u8f6c\u6362\u4e3a\u6574\u578b\u53d8\u91cf
2.
\u4ed4\u7ec6\u770b\u4ee3\u7801\uff0c\u8fdb\u5faa\u73af\u4e4b\u524d\u5c31\u5df2\u7ecfinput\u8be2\u95ee\u4e86\u4e00\u6b21\u503c\uff0c\u6240\u4ee5\u53ea\u8981\u8fd9\u6b21\u8f93\u5165\u7684\u4e0d\u662f8\uff0c\u5c31\u53ef\u4ee5\u8fdbwhile\u4e86\uff0c\u7136\u540ewhile\u91cc\u518d\u5f00\u59cb\u95ee\u4f60\uff0c\u4e0d\u662f8\u5c31\u63d0\u793a\u5c0f\u6216\u8005\u5927\uff0c\u76f4\u5230\u4f60\u8f93\u51658\u4e86\uff0c\u5c31\u6267\u884c\u7b2c\u4e00\u4e2aif\u91cc\u9762\u7684\uff0c\u7136\u540e\u7a0b\u5e8f\u7ee7\u7eed\u8dd1\u5b8c\u8fd9\u6b21\u5faa\u73af\u56de\u5230while\u6700\u5f00\u59cb\u7684\u5224\u65ad\u6761\u4ef6\uff0c\u8fdb\u4e0d\u53bb\u4e86\uff0c\u76f4\u63a5\u8df3\u5230\u6700\u540e\u4e00\u53e5
3.
\u4e2a\u4eba\u610f\u89c1\uff0c\u5c0f\u7532\u9c7c\u7684\u6559\u7a0b\u8fd8\u662f\u592alow\u4e86\uff0c\u6211\u770b\u7740\u5c31\u4e00\u540a\u4e1d\u6559\u7a0b\uff0c\u6709\u610f\u65e0\u610f\u5730\u8bf4\u4e9b\u6bd4\u8f83\u6076\u4fd7\u7684\u4e1c\u897f\u6765\u8fce\u5408\u540a\u4e1d\u5b66\u4e60\u8005\uff0c\u800c\u4e14\u4f3c\u4e4e\u8bb2\u5f97\u4e5f\u4e00\u822c\uff0c\u6211\u5f53\u521d\u770b\u4e863~4\u8282\u611f\u89c9\u6ca1\u4ec0\u4e48\u5e72\u8d27\u3002\u80fd\u770b\u4e66\u7edd\u5bf9\u770b\u4e66\u6548\u7387\u9ad8\uff0c\u63a8\u8350\u300a\u7b28\u529e\u6cd5\u5b66python\u300b\u8fd8\u6709\u9a6c\u4fee\u7684\u300apython\u7f16\u7a0b\uff1a\u4ece\u5165\u95e8\u5230\u5b9e\u8df5\u300b\uff0c\u7edd\u5bf9\u9002\u5408\u96f6\u57fa\u7840\u5165\u95e8\u3002
4.
\u597d\u5427\u8fd9\u4e2a\u95ee\u9898\u6211\u5199\u7740\u5199\u7740\u4ed4\u7ec6\u60f38\u67086\u53f7\u7684\u95ee\u9898\u4f60\u5e94\u8be5\u81ea\u5df1\u89e3\u51b3\u4e86- -
循环遍历
比如做排序，遍历某个列表、元祖中的所有对象等等等等
for循环能做的事情while基本上都能做
绛旓細1. 鏉′欢琛ㄨ揪寮忓垽鏂細鍦while寰幆涓紝棣栧厛闇瑕佺粰鍑轰竴涓潯浠惰〃杈惧紡銆傝繖涓〃杈惧紡鐨勭粨鏋滃簲涓哄竷灏斿笺傚彧瑕佹潯浠惰〃杈惧紡鐨勫间负True锛屽惊鐜綋鍐呯殑浠ｇ爜灏变細琚弽澶嶆墽琛屻2. 浠ｇ爜鍧楁墽琛岋細褰撴潯浠惰〃杈惧紡鐨勫间负True鏃讹紝寰幆浣撳唴鐨勪唬鐮佸潡浼氳鎵ц銆傝繖涓唬鐮佸潡鍙互鍖呭惈浠讳綍Python璇彞锛屽璧嬪笺佸嚱鏁拌皟鐢ㄣ佽绠楃瓑銆3. 鏉′欢妫鏌...
绛旓細python while寰幆璇彞锛歸hile 鍒ゆ柇鏉′欢(condition)锛氭墽琛岃鍙(statements)鈥︹︽墽琛岃鍙ュ彲浠ユ槸鍗曚釜璇彞鎴栬鍙ュ潡銆傚垽鏂潯浠跺彲浠ユ槸浠讳綍琛ㄨ揪寮忥紝浠讳綍闈為浂銆佹垨闈炵┖锛坣ull锛夌殑鍊煎潎涓簍rue銆傚綋鍒ゆ柇鏉′欢鍋 false 鏃讹紝寰幆缁撴潫銆傚疄渚嬶細!/usr/bin/python count = 0 while (count < 9):print 'The count is:', ...
绛旓細python while寰幆璇彞鏄紝閫氳繃while 寰幆姹1~100鎵鏈夋暣鏁扮疮鍔犵殑鍜屻俽esult = 0 i = 0 while i <= 100:result += i i += 1 print('\t绗%d娆¤绠楃粨鏋滄槸锛%d' % (i, result))print('1~100鎵鏈夋暣鏁扮疮鍔犵殑鍜屼负锛%d' % result)绠浠 do...while 寰幆鏄 while 寰幆鐨勫彉绉嶃傝寰幆绋嬪簭鍦ㄥ垵...
绛旓細python寰幆璇彞while璇彞鐢ㄤ簬寰幆鎵ц绋嬪簭锛屽嵆鍦ㄦ煇鏉′欢涓嬶紝寰幆鎵ц鏌愭绋嬪簭锛屼互澶勭悊闇瑕侀噸澶嶅鐞嗙殑鐩稿悓浠诲姟銆倃hile鐨勬潯浠堕渶寰楀埌甯冨皵绫诲瀷锛孴rue琛ㄧず缁х画寰幆锛孎alse琛ㄧず缁撴潫寰幆銆傞渶瑕佽缃惊鐜粓姝㈢殑鏉′欢锛屽i+=1閰嶅悎i<100锛屽氨鑳界‘淇100娆″悗鍋滄锛屽惁鍒欏皢鏃犻檺寰幆銆傜┖鏍肩缉杩涘拰if鍒ゆ柇涓鏍凤紝閮介渶瑕佽缃傚悓鍒ゆ柇璇...
绛旓細python涓瓀hile寰幆鐨勭敤娉曞涓嬶細鎴戜滑绉诲姩input鍜宨f璇彞鍒皐hile寰幆涓紝鍦╳hile寰幆鍓嶏紝璁剧疆鍙橀噺running涓篢rue銆傞鍏堬紝鎴戜滑妫娴嬪彉閲弐unning鏄惁涓篢rue锛岀劧鍚庡線涓嬫墽琛岀浉搴鐨剋hile鍧椼傚湪杩欎釜鍧楁墽琛屽畬鍚庯紝鍐嶆娴嬫潯浠讹紝鍦ㄨ繖閲屾槸鍙橀噺running锛屼负鐪燂紝鎴戜滑鍐嶆鎵цwhile鍧楋紝鍚﹀垯锛屾垜浠墽琛屽彲閫夌殑else鍧楋紝鐒跺悗鎵ц涓嬮潰鐨勮鍙...
绛旓細Python涓殑for寰幆鍜while寰幆閮芥槸鐢ㄦ潵瀹炵幇閲嶅鎵ц浠ｇ爜鍧楃殑缁撴瀯銆俧or寰幆閫氬父鐢ㄤ簬閬嶅巻搴忓垪锛堝鍒楄〃銆佸厓缁勬垨瀛楃涓诧級锛岃寃hile寰幆鍒欑敤浜庡湪婊¤冻鐗瑰畾鏉′欢鏃堕噸澶嶆墽琛屼唬鐮佸潡銆1. for寰幆鐨勮娉曠粨鏋勶細python for 鍙橀噺 in 搴忓垪:鎵ц鐨勪唬鐮佸潡 杩欓噷锛屸滃彉閲忊濇槸涓涓复鏃跺彉閲忥紝鐢ㄤ簬鍦ㄦ瘡娆¤凯浠ｄ腑瀛樺偍搴忓垪鐨勫綋鍓嶅厓绱犮
绛旓細python while寰幆璇彞鏄細閫氳繃while 寰幆姹1~100鎵鏈夋暣鏁扮疮鍔犵殑鍜屻俽esult=0銆俰=0銆倃hile i <=100銆俽esult+=i銆俰+=1銆俻rint('\t绗%d娆¤绠楃粨鏋滄槸锛%d' % (i, result))銆俻rint('1~100鎵鏈夋暣鏁扮疮鍔犵殑鍜屼负锛%d' % result)銆傚疄渚嬶細/usr/bin/python銆俢ount=0銆倃hile (count < 9)銆俻rint '...
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