{"id":156827,"date":"2020-09-15T23:26:19","date_gmt":"2020-09-15T15:26:19","guid":{"rendered":"http:\/\/4563.org\/?p=156827"},"modified":"2020-09-15T23:26:19","modified_gmt":"2020-09-15T15:26:19","slug":"python-%e9%81%8d%e5%8e%86%e6%95%b0%e7%bb%84%e5%af%b9%e8%b1%a1%e6%80%8e%e4%b9%88%e5%8f%96%e5%ba%8f%e5%8f%b7","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=156827","title":{"rendered":"Python \u904d\u5386\u6570\u7ec4\u5bf9\u8c61\u600e\u4e48\u53d6\u5e8f\u53f7?"},"content":{"rendered":"
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Python \u904d\u5386\u6570\u7ec4\u5bf9\u8c61\u600e\u4e48\u53d6\u5e8f\u53f7? <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : QGabriel <\/span> <\/i> 8<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
pymongo.cursor.Cursor list \u5bf9\u8c61
\u6211\u60f3\u53d6 i[‘key’] \u548c i+1[‘key’]<\/p>\n

\u600e\u4e48\u53d6? <\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (16<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xiaolinjia <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    enumerate <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : jmc891205 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    for i in range(len(list)-1) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : TimePPT <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    enumerate +1 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : datou <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    list.index() <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : QGabriel <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5177\u4f53\u600e\u4e48\u5199\u554a~\u4ee5\u4e0a\u7684\u65b9\u6cd5\u90fd\u8bd5\u4e86\u597d\u50cf\u4e0d\u884c\u554a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : 1018ji <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @QGabriel for i, element in enumerate(seq): <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : hjahgdthab750 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    enumerate <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : 1018ji <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f60\u53ea\u6bd4\u8f83 0 \u548c 1 \u6211\u548b\u611f\u89c9\u8fd9\u9700\u6c42\u8fd9\u4e48\u8be1\u5f02 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xiaolinjia <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    https:\/\/paste.ubuntu.com\/p\/t4Vy4yHJSP\/ <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xdnauly <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    list[0].get(“a”) == list[1].get(“a”)<\/p>\n

    #\u8fd8\u6709 list[0][‘a’] == list[1][‘a’] \u4e0d\u662f\u53ef\u4ee5\u76f4\u63a5\u6bd4\u8f83\u554a\uff0c\u6ca1\u6709\u592a\u770b\u61c2\u4f60\u7684\u95ee\u9898 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : QGabriel <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xiaolinjia \u8c22\u8c22! <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : TenaxTsi <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xiaolinjia \u8fd9\u5de5\u5177\u4e0d\u9519\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : QGabriel <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xiaolinjia list \u7684\u7c7b\u578b\u662f pymongo.cursor.Cursor db[index + 1][‘a’] \u5c31\u63d0\u793a\u9519\u8bef\u4e86<\/p>\n

    —–
    Traceback (most recent call last):
    File “C:\/python\/t.py”, line 10, in <module>
    if (item[‘code’] == db[index + 1][‘code’]):
    File “C:pythonvenvlibsite-packagespymongocursor.py”, line 612, in __getitem__
    self.__check_okay_to_chain()
    File “C:pythonvenvlibsite-packagespymongocursor.py”, line 401, in __check_okay_to_chain
    raise InvalidOperation(“cannot set options after executing query”)
    pymongo.errors.InvalidOperation: cannot set options after executing query <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xiaolinjia <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @QGabriel \u8bd5\u8bd5\u628a\u4ed6\u8f6c\u6210 list(db)\uff0c\u7136\u540e\u518d\u64cd\u4f5c\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : biglazycat <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    list = [{‘a’: 1},{‘a’:2},{‘a’:3}]<\/p>\n

    for index, mem in enumerate(list):
    if index < len(list) – 1:
    print(mem[‘a’])
    print(list[index + 1][‘a’]) <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : biglazycat <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xiaolinjia \u88c5\u60a8\u7684\u4ee3\u7801\u6284\u4e86\u4e00\u4e0b\u3002\u8bf7\u95ee\u4ee3\u7801\u662f\u600e\u4e48\u4f20\u5230 ubuntu \u4e0a\u7684\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    Python \u904d\u5386\u6570\u7ec4\u5bf9\u8c61\u600e\u4e48\u53d6\u5e8f…<\/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\/156827"}],"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=156827"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/156827\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=156827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=156827"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=156827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}