{"id":322379,"date":"2021-02-05T18:25:57","date_gmt":"2021-02-05T10:25:57","guid":{"rendered":"http:\/\/4563.org\/?p=322379"},"modified":"2021-02-05T18:25:57","modified_gmt":"2021-02-05T10:25:57","slug":"%e8%bf%ab%e4%ba%8e%e9%80%bb%e8%be%91%e5%ae%9e%e5%9c%a8%e7%90%86%e4%b8%8d%e6%b8%85%e4%ba%86%ef%bc%8c-python-%e6%b1%82%e5%8a%a9","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=322379","title":{"rendered":"\u8feb\u4e8e\u903b\u8f91\u5b9e\u5728\u7406\u4e0d\u6e05\u4e86\uff0c Python \u6c42\u52a9"},"content":{"rendered":"
\n
\n
\n

\u8feb\u4e8e\u903b\u8f91\u5b9e\u5728\u7406\u4e0d\u6e05\u4e86\uff0c Python \u6c42\u52a9 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : yixiugegegege <\/span> <\/i> 6<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
{
“child”: [{
“f_brandname”: “\u5954\u9a70”,
“f_pyfirstletter”: “B”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}, {
“f_brandname”: “\u5317\u5954\u91cd\u5361”,
“f_pyfirstletter”: “B”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}, {
“f_brandname”: “\u798f\u7530\u6b27\u66fc”,
“f_pyfirstletter”: “F”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}, {
“f_brandname”: “\u6c5f\u94c3\u6c7d\u8f66”,
“f_pyfirstletter”: “J”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}]
}<\/p>\n

\u53d8\u6210<\/p>\n

{
“child”: {
“B”: [{
“f_brandname”: “\u5954\u9a70”,
“f_pyfirstletter”: “B”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}, {
“f_brandname”: “\u5317\u5954\u91cd\u5361”,
“f_pyfirstletter”: “B”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}],
“F”: [{
“f_brandname”: “\u798f\u7530\u6b27\u66fc”,
“f_pyfirstletter”: “F”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}],
“J”: [{
“f_brandname”: “\u6c5f\u94c3\u6c7d\u8f66”,
“f_pyfirstletter”: “J”,
“seriesname”: “\u8f7d\u8d27\u8f66”
}]
}
}<\/p>\n

\u5c31\u662f\u628a\u6bcf\u4e2a\u5c0f\u5b57\u5178\u7ed9\u5f52\u7c7b\u4e86\uff0c\u8fd8\u6709\u597d\u591a\u4e2a\u54c1\u724c\uff0c\u8fd9\u4e2a\u662f\u5c11\u6570
\u8bed\u8a00\u662f python\uff0c\u6c42 demo\uff0c <\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (14<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : taogen <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6ca1\u5199\u8fc7 Python \u3002\u4e0d\u8fc7\u628a\u5bf9\u8c61\u6570\u7ec4\u53d8\u6210\u54c8\u5e0c\u6570\u7ec4\uff0c\u4e0d\u4f1a\u5f88\u96be\u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : yixiugegegege <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @taogen \u6211\u767e\u5ea6\u4e00\u624b\uff0c\u8c22\u8c22 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : nvkou <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    Java \u7684\u8bdd\u7b2c\u4e00\u53cd\u5e94\u662f stream. map. groupingby
    Python \u7684\u8bdd\u6211\u4f30\u8ba1\u4e5f\u4f1a\u8fd9\u4e48\u505a
    \u5927\u4e0d\u4e86\u5148\u62ff firstletter \u7684\u96c6\u5408\uff0c\u518d\u7528\u8fd9\u4e2a\u96c6\u5408\u8fc7\u6ee4\u5230\u4e0d\u540c\u7ec4\u3002\u4e5f\u5c31\u662f\u5148\u5efa\u7acb\u952e\uff0c\u518d\u901a\u8fc7\u952e\u8fc7\u6ee4\u503c <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : eggshell <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7528 itertools.groupby <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xiaoming1992 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5c31\u7528 for in \u4e5f\u884c\u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : wzwwzw <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    from itertools import groupby<\/p>\n

    before_data = {
    “child”: [
    {“f_brandname”: “\u5954\u9a70”, “f_pyfirstletter”: “B”, “seriesname”: “\u8f7d\u8d27\u8f66”},
    {“f_brandname”: “\u5317\u5954\u91cd\u5361”, “f_pyfirstletter”: “B”, “seriesname”: “\u8f7d\u8d27\u8f66”},
    {“f_brandname”: “\u798f\u7530\u6b27\u66fc”, “f_pyfirstletter”: “F”, “seriesname”: “\u8f7d\u8d27\u8f66”},
    {“f_brandname”: “\u6c5f\u94c3\u6c7d\u8f66”, “f_pyfirstletter”: “J”, “seriesname”: “\u8f7d\u8d27\u8f66”},
    ]
    }<\/p>\n

    after_data = {“child”: {}}
    for j, i in groupby(before_data[“child”], key=lambda x: x[“f_pyfirstletter”]):
    if j not in after_data[“child”]:
    after_data_example[“child”][j] = []
    for k in i:
    after_data_example[“child”][j].append(k)<\/p>\n

    print(after_data_example) <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zyx199199 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u00b7\u00b7\u00b7
    from itertools import groupby<\/p>\n

    {k: list(v) for k,v in groupby(data[‘child’], key=lambda x: x[“f_pyfirstletter”])}
    “` <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : yixiugegegege <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @eggshell \u5367\u69fd\uff0c\u89e3\u51b3\u4e86\uff0c\u8001\u54e5\uff0c\u8c22\u8c22\uff01\uff01\uff01 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : my8100 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    from collections import defaultdict<\/p>\n

    child_dict = defaultdict(list)
    for d in data[“child”]:
    child_dict[d[“f_pyfirstletter”]].append(d)<\/p>\n

    assert {“child”: child_dict} == target_data <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : yixiugegegege <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wzwwzw \u8c22\u8c22\u8001\u54e5\u7684\u4ee3\u7801\uff0c\u7ec8\u4e8e\u89e3\u51b3\u4e86\u54ed <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : yixiugegegege <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @zyx199199 \u8c22\u8c22\u8001\u54e5\u89e3\u51b3\u4e86\uff0c\u559c\u6781\u800c\u6ce3\uff0c\u795d\u798f\u672c\u6708\u65e0 bug\uff0c\u65e0\u8feb\u4e8e <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : yixiugegegege <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @my8100 \u8c22\u8c22\u8001\u54e5\uff0c\u2764\ufe0f\u4f60\uff0c\u7231\u4f60 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : imn1 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    new = {‘child’: {x[“f_pyfirstletter”]: [] for x in d[“child”]}}
    [new[‘child’][x[“f_pyfirstletter”]].append(x) for x in d[“child”]]<\/p>\n

    \u4e0b\u5212\u7ebf\u4e3a\u7a7a\u683c
    d \u4e3a\u6e90\u5b57\u5178\uff0cnew \u4e3a\u7ed3\u679c <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : imn1 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    # 13 \u201c\u4e0b\u5212\u7ebf\u4e3a\u7a7a\u683c\u201d\u4e0d\u9700\u8981
    \u539f\u6765\u662f\u7528 for \u7684\uff0c\u6709\u7f29\u8fdb\uff0c\u540e\u6765\u6539\u6210\u5217\u8868\u8868\u8fbe\u5f0f\uff0c\u4e0d\u9700\u8981\u7f29\u8fdb\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u8feb\u4e8e\u903b\u8f91\u5b9e\u5728\u7406\u4e0d\u6e05\u4e86\uff0c Pytho…<\/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\/322379"}],"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=322379"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/322379\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=322379"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=322379"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=322379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}