{"id":126237,"date":"2020-01-17T15:01:49","date_gmt":"2020-01-17T07:01:49","guid":{"rendered":"http:\/\/4563.org\/?p=126237"},"modified":"2020-01-17T15:01:49","modified_gmt":"2020-01-17T07:01:49","slug":"python-%e5%ae%9e%e7%8e%b0-switch-case-%e9%97%ae%e9%a2%98%e8%af%b7%e6%95%99","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=126237","title":{"rendered":"Python \u5b9e\u73b0 switch-case \u95ee\u9898\u8bf7\u6559"},"content":{"rendered":"
\n
\n
\n

Python \u5b9e\u73b0 switch-case \u95ee\u9898\u8bf7\u6559 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : viiii <\/span> <\/i> 12<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u90fd\u77e5\u9053 python \u6ca1\u6709 switch-case \u8bed\u53e5,\u901a\u5e38\u8981\u5b9e\u73b0\u7c7b\u4f3c\u529f\u80fd\u7684\u65f6\u5019,\u901a\u8fc7 dict \u5b9e\u73b0<\/p>\n

\u90a3\u4e48,\u5982\u679c\u9047\u5230\u4e0b\u5217\u60c5\u51b5,\u7528 python \u8be5\u600e\u4e48\u5b9e\u73b0\u6bd4\u8f83\u597d\u5462?<\/p>\n

switch (var){     case 1,5,9,19:  # \u53d6\u503c\u4e3a\u591a\u4e2a\u65e0\u89c4\u5f8b\u7684\u6570\u5b57         break;     case 3,21,50:         break;     case default:      break; } <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (9<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : mzotw2babm <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7528\u4e2a\u5217\u8868\uff1f
    if i in [1, 5, 9, 19]:
     break
    else if i in [3, 21, 50]:
     break
    else
     break                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : mzotw2babm <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 else if –> elif
    \u597d\u4e45\u4e0d\u5199\uff0c\u5199\u9519\u4e86- –                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : elmagnificogg <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u96c6\u5408 in \u64cd\u4f5c\u554a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : gzfrankie <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7528 if \uff08 x==1) && (x==2
    Else if (x==3)
    else if
    \u7684\u683c\u5f0f\u3002<\/p>\n
    python \u7f16\u8bd1\u5668\u5bf9\u8fd9\u4e2a\u5176\u5b9e\u662f\u6709\u4f18\u5316\u7684\uff0c\u4f1a\u4f18\u5316\u6210 switch \u5bf9\u5e94\u7684\u6c47\u7f16\u3002\u8be6\u89c1 pep3103 \u548c pep275                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : 0bit <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 “` python
    if var in {1, 5, 9, 19}:
     pass
    elif var in {3, 21, 50}:
     pass
    else:
     pass
    “`<\/p>\n
    \u6ce8\u610f\u4e00\u70b9\uff0cin \u540e\u9762\u662f set\uff0c\u4f1a\u66f4\u5feb\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : 0bit <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @mzotw2babm \u4e0d\u5e94\u8be5\u5199 break\uff0c\u6ca1\u6709\u5faa\u73af                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : mzotw2babm <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @0bit \u55ef\u55ef\u5728\u4e0b\u9519\u4e86\uff0c\u597d\u4e45\u6ca1\u5199\u4e86\uff0c\u4e5f\u6ca1\u4ed4\u7ec6\u8003\u8651\uff0c\u76f4\u63a5\u5957\u4e86\u4e3b\u7684\u683c\u5f0f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : viiii <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @gzfrankie \u77e5\u8bc6\u70b9+1, \u591a\u8c22                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : viiii <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @mzotw2babm \u7528 in + list \u662f\u4e2a\u597d\u529e\u6cd5, \u4e4b\u524d\u8001\u662f\u5f80 dict \u4e0a\u9762\u60f3,\u94bb\u725b\u89d2\u5c16\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    Python \u5b9e\u73b0 switch-…<\/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\/126237"}],"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=126237"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/126237\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=126237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=126237"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=126237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}