{"id":84297,"date":"2020-05-15T20:50:01","date_gmt":"2020-05-15T12:50:01","guid":{"rendered":"http:\/\/4563.org\/?p=84297"},"modified":"2020-05-15T20:50:01","modified_gmt":"2020-05-15T12:50:01","slug":"%e9%97%ae%e4%b8%80%e4%b8%aa-python-%e7%9a%84%e7%ae%80%e5%8d%95%e8%af%ad%e6%b3%95%e5%8c%ba%e5%88%ab%ef%bc%8c-for-i-in-list-%e5%92%8c-for-i-in-range-%e7%9a%84%e5%8c%ba%e5%88%ab%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=84297","title":{"rendered":"\u95ee\u4e00\u4e2a Python \u7684\u7b80\u5355\u8bed\u6cd5\u533a\u522b\uff0c for i in list \u548c for i in range \u7684\u533a\u522b\uff1f"},"content":{"rendered":"
\n
\n
\n

\u95ee\u4e00\u4e2a Python \u7684\u7b80\u5355\u8bed\u6cd5\u533a\u522b\uff0c for i in list \u548c for i in range \u7684\u533a\u522b\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : GTD <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u5df2\u77e5 list = [1,2,3,4,5]<\/p>\n

for i in list \u548c for i in range(len(list))<\/p>\n

\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f\u611f\u8c22 <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (21<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Pagliacii <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u524d\u8005\u662f\u904d\u5386\u5217\u8868\u5143\u7d20\uff0c\u540e\u8005\u662f\u904d\u5386 [0, len(list)) \u5e8f\u5217\u7684\u5143\u7d20 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : wenqiang1208 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u3002\u3002\u3002\u3002
    for i in list : i \u662f list \u91cc\u9762\u7684\u5143\u7d20\u7684\u503c
    for i in range(len(list)) \uff1ai \u662f range \u65b0\u751f\u6210\u8fed\u4ee3\u5668\uff08 0\uff0c1\uff0c2\uff0c3\uff0c4 \uff09\u91cc\u7684\u5143\u7d20 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : GTD <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u54e6\u54e6 \u6211\u660e\u767d\u4e86\uff0cfor i in list \u7684\u8bdd\uff0c\u662f\u628a i \u53d8\u6210 list \u7684\u6bcf\u4e00\u4e2a\uff0c\u7136\u540e\u6bcf\u6b21\u589e\u52a0\u4e00\u4e2a\uff0c\u6309 1\uff0c2\uff0c3\uff0c4\uff0c5 \u6765\u3002in range \u7684\u8bdd\uff0c\u5c31\u4e00\u5b9a\u662f\u4ece 0-5 \u8fd9\u6837\u6765 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : GTD <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u597d\u610f\u601d\u6211\u4e22\u4eba\u4e86\u3002\u3002\u3002\u597d\u4e45\u6ca1\u5199 Python\uff0c\u521a\u521a\u7a81\u7136\u53d1\u73b0\u7528 range \u53ef\u4ee5\uff0c\u76f4\u63a5 in list \u4e0d\u884c\uff0c\u54c8\u54c8\u54c8 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Pagliacii <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53ea\u662f\u6070\u597d\u4f60\u7684\u5217\u8868\u5143\u7d20\u662f\u6570\u5b57\u800c\u5df2 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : cz5424 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    for i in range(1, 5)\u4e3e\u4e00\u53cd\u4e09 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : cz5424 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @cz5424 \u5199\u9519\uff0c\u5e94\u8be5\u662f 6 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ipwx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @GTD \u3002\u3002\u3002\u4f60\u8fd8\u662f\u7406\u89e3\u9519\u4e86\u3002python \u7684 for \u4ece\u6765\u6ca1\u6709\u201ci \u7d2f\u52a0\u201d\u8fd9\u4e2a\u8bed\u4e49\uff0c\u90fd\u662f\u201cforeach\u201d\u7684\u8bed\u4e49\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : arrow8899 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u8fd8\u53ef\u4ee5\u8fd9\u6837\u5199
    for index, value in enumerate(list):
    print (index, value)
    \u6548\u7387\u66f4\u9ad8\uff0c\u4e5f\u66f4\u7b80\u6d01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : crella <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5b9e\u73b0\u4e86 iterable \u5c31\u884c\uff08\u597d\u50cf\u662f\u8fd9\u6837\u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : crella <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u611f\u89c9\u52a8\u6001\u8bed\u8a00\u7684\u53d1\u5c55\u65b9\u5411\u90fd\u5dee\u4e0d\u591a\uff0c\u5565\u65f6\u5019 nodejs \u4e5f\u80fd\u652f\u6301 for \u6216\u8005 each \u8fed\u4ee3\uff1f\uff08 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : crella <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    sorry\uff0c\u53c8\u66b4\u9732\u4e86\u6211\u7684\u65e0\u77e5\uff0cjs \u5bf9\u5e94\u7684\u662f for (let value of\/in list){…} <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : l1nyanm1ng <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @crella \u76f4\u63a5\u7528 Array.prototype.forEach \u6216\u8005 Array.prototype.map \u5c82\u4e0d\u7f8e\u54c9\uff0c\u611f\u89c9\u90fd\u597d\u4e45\u6ca1\u7528\u8fc7\u547d\u4ee4\u5f0f\u7684 api \u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zhanglintc <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u8fd8\u4ee5\u4e3a\u662f\u5728\u95ee list \u548c generator \u7684\u533a\u522b, \u7ed3\u679c\u662f\u8fd9\u4e2a.<\/p>\n

    list \u91cc\u653e\u70b9\u522b\u7684\u4e1c\u897f\u5dee\u522b\u5c31\u5f88\u660e\u663e\u4e86\u561b. <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : sudoy <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0a\u8bf4\u7684\u5bf9\uff0c\u4f60\u653e\u70b9\u522b\u7684\u4e1c\u897f\uff0c\u522b\u653e 12345\uff0c\u8fd9\u6837\u4e00\u773c\u5c31\u770b\u51fa\u6765\u3002\u4e00\u4e2a\u662f\u503c\uff0c\u4e00\u4e2a\u662f index<\/p>\n

    mylist = [‘google’, ‘facebook’, ‘microsoft’]<\/p>\n

    for x in mylist:
    print(x) # \u8f93\u51fa\u7ed3\u679c\u5e94\u8be5\u662f google, amazon, facebook<\/p>\n

    for y in range(len(mylist)):
    print(y) # \u8f93\u51fa\u7ed3\u679c\u5e94\u8be5\u662f 0, 1, 2 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Enying <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5927\u5bb6\u90fd\u662f\u6b63\u89e3 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : sunmker <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u524d\u8005\u662f\u904d\u5386\uff0c\u540e\u8005\u662f\u53d6\u4e0b\u6807\uff0clist \u6709\u4e0b\u6807\uff0c\u522b\u7684\u561e\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : julyclyde <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @sunmker \u540e\u8005\u4e5f\u4e0d\u662f\u53d6\u4e0b\u6807 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : 24bit <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u672c\u8d28\u4e0a\u90fd\u662f\u4e00\u6837\u7684\uff0c\u53ea\u8981\u5b9e\u73b0\u4e86\u8fed\u4ee3\u5668\u534f\u8bae\u5c31\u53ef\u4ee5\u7528 for … in \u8bed\u6cd5\uff0crange \u5bf9\u8c61\u8fed\u4ee3\u65f6\u8fd4\u56de\u7684\u662f\u6570\u5b57\u800c\u5df2 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : llsquaer <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    for i in list:
    print(‘i’) \u8868\u793a\u904d\u5386\u5217\u8868,\u5e76\u6253\u5370 i \u7684\u503c( \u6bd4\u5982 a b c d).\u4f60\u7684\u6848\u4f8b\u770b\u4e0d\u51fa\u533a\u522b<\/p>\n

    for i in range(len(list)):
    print(‘i’) \u8868\u793a\u904d\u5386\u7684\u6b21\u6570,\u5e76\u6253\u5370\u8fed\u4ee3\u540e\u7684\u6570\u503c<\/p>\n

    \u5f53\u7136 \u4f60\u95ee\u9898 \u6709 list \u548c range …list \u662f\u5217\u8868,,\u800c range \u7b80\u5355\u7406\u89e3\u4e3a\u8ba1\u6570\u7528\u7684. <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : northisland <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    python3 \u91cc range \u8fd4\u56de\u7684\u662f\u8fed\u4ee3\u5668\uff0c\u548c list \u4e0d\u4e00\u6837\uff0c\u8fd0\u884c\u65f6\u624d\u751f\u6210\u3002<\/p>\n

    python2 \u91cc\u6728\u6709\u4ec0\u4e48\u533a\u522b <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    \u95ee\u4e00\u4e2a Python \u7684\u7b80\u5355\u8bed\u6cd5\u533a…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/84297"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=84297"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/84297\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=84297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=84297"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=84297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}