{"id":229671,"date":"2020-12-15T20:37:10","date_gmt":"2020-12-15T12:37:10","guid":{"rendered":"http:\/\/4563.org\/?p=229671"},"modified":"2020-12-15T20:37:10","modified_gmt":"2020-12-15T12:37:10","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-list-%e5%86%85%e9%80%9a%e8%bf%87%e6%9d%a1%e4%bb%b6%e8%a1%a8%e8%be%be%e5%bc%8f%e6%9d%a5%e5%86%b3%e5%ae%9a%e4%b8%80%e4%b8%aa%e5%80%bc%e6%98%af%e5%90%a6%e5%ad%98%e5%88%b0-list","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=229671","title":{"rendered":"\u5982\u4f55\u5728 list \u5185\u901a\u8fc7\u6761\u4ef6\u8868\u8fbe\u5f0f\u6765\u51b3\u5b9a\u4e00\u4e2a\u503c\u662f\u5426\u5b58\u5230 list \u5185\uff1f"},"content":{"rendered":"
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\u5982\u4f55\u5728 list \u5185\u901a\u8fc7\u6761\u4ef6\u8868\u8fbe\u5f0f\u6765\u51b3\u5b9a\u4e00\u4e2a\u503c\u662f\u5426\u5b58\u5230 list \u5185\uff1f <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : css3 <\/span> <\/i> 4<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u5f53a<\/code>\u4e3aTrue<\/code>\u65f6\u5c55\u793a\u51fa\u6765\uff0c\u4e3aFalse<\/code>\u65f6\u4e0d\u5c55\u793a\uff0c\u60f3\u5b66\u4e60pythonion<\/code>\uff08\u8fd9\u4e2a\u8bcd\u548b\u5199\u7684\u4e0d\u4f1a <\/div>\n
\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (10<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : AoEiuV020 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u61c2 Python, \u4f46\u5176\u4ed6\u8bed\u8a00\u4e5f\u6ca1\u89c1\u8fc7\u7c7b\u4f3c\u8bed\u6cd5\uff0c\u5efa\u8bae\u5206\u591a\u4e2a\u8bed\u53e5\u7528\u666e\u901a\u65b9\u6cd5\u5224\u65ad\u6dfb\u52a0\uff0c <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : crs0910 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    https:\/\/stackoverflow.com\/a\/54298711 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : crs0910 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    mylist = [
    … 1,
    … 2,
    … *([a] if a else []),
    … 4
    … ] <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : XIVN1987 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u524d\u9762\u6b63\u5e38\u5199\uff0c\uff0c\u540e\u9762\u518d\u5904\u7406\u4e00\u6b65\u4e0d\u884c\u5417\uff1f
    mylist = [
    1,
    2,
    a,
    4
    ]<\/p>\n

    mylist = [x for x in mylist if x] <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : css3 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @crs0910 \u6211\u53bb\uff0c\u5927\u610f\u4e86\uff0c\u4e22\u4e86\u4e2a\u62ec\u53f7 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : crs0910 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u61c2 python\uff0c\u770b\u4e86\u4e00\u4e0b\u8fd9\u4e2a’*’\u5c31\u662f\u50cf js \u91cc\u9762\u7684 ‘…’,\u8fd9\u91cc\u5c55\u5f00\u7684\u5e94\u8be5\u662f\u4e00\u4e2a\u53ef\u8fed\u4ee3\u7684\u7c7b\u578b\uff0c\u62a5\u9519\u4e5f\u8bf4\u7684\u633a\u6e05\u695a\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : renmu123 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    In [2]: a = [1, 23, 4, False, None]<\/p>\n

    In [3]: print(list(filter(lambda x: x, a)))
    [1, 23, 4]<\/p>\n

    \u8fd9\u6837\u5e94\u8be5\u7b97\u6bd4\u8f83 pythonic <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : lostsquirrelX <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u89e3\u91ca\u4e00\u4e0b\u62a5\u9519\u7684\u539f\u56e0\uff0c\u4e00\u4e2a\u5143\u7d20\u7684 tuple \u8981\u52a0\u9017\u53f7\uff0c<\/p>\n

    “`python
    a = (1)
    >>> type(a)
    <class ‘int’><\/p>\n

    >>> b = (2,)
    >>> type(b)
    <class ‘tuple’>
    “` <\/div>\n<\/p><\/div>\n<\/li>\n

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    \u8cc7\u6df1\u5927\u4f6c : weyou <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u9664\u4e86\u5fd8\u8bb0\u62ec\u53f7\uff0c\u4e3b\u7684\u5199\u6cd5\u4f30\u8ba1\u662f\u6700\u597d\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
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    \u8cc7\u6df1\u5927\u4f6c : nano91 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u8981\u62ec\u53f7\uff0c\u4e5f\u4e0d\u8981* \u76f4\u63a5\u5199\u5c31\u884c\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u5982\u4f55\u5728 list \u5185\u901a\u8fc7\u6761\u4ef6\u8868\u8fbe\u5f0f…<\/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\/229671"}],"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=229671"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/229671\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=229671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=229671"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=229671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}