{"id":3051,"date":"2016-12-14T10:23:14","date_gmt":"2016-12-14T02:23:14","guid":{"rendered":"http:\/\/ixyzero.com\/blog\/?p=3051"},"modified":"2016-12-14T10:23:14","modified_gmt":"2016-12-14T02:23:14","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e5%bf%ab%e9%80%9f%e8%bf%9b%e8%a1%8c%e5%a4%9a%e4%b8%aa%e5%ad%97%e7%ac%a6%e7%9a%84%e6%9b%bf%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/ixyzero.com\/blog\/archives\/3051.html","title":{"rendered":"Python\u4e2d\u5982\u4f55\u5feb\u901f\u8fdb\u884c\u591a\u4e2a\u5b57\u7b26\u7684\u66ff\u6362"},"content":{"rendered":"

=Start=<\/p>\n

\u7f18\u7531\uff1a<\/h4>\n

\u5728\u5de5\u4f5c\u4e2d\u78b0\u5230\u4e86\u8fd9\u4e48\u4e00\u4e2a\u95ee\u9898\uff0c\u8bb0\u5f55\u4e00\u4e0b\u89e3\u51b3\u65b9\u6848\u53ca\u5176\u8fc7\u7a0b\uff0c\u65b9\u4fbf\u4ee5\u540e\u53c2\u8003\u3002<\/p>\n

\u6b63\u6587\uff1a<\/h4>\n

\u53c2\u8003\u89e3\u7b54\uff1a<\/h5>\n
\u5148\u7ed9\u51fa\u7ed3\u8bba\uff1a<\/h6>\n
    \n
  1. \u8981\u66ff\u6362\u7684\u5b57\u7b26\u6570\u91cf\u4e0d\u591a\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u94fe\u5f0freplace()\u65b9\u6cd5\u8fdb\u884c\u66ff\u6362\uff0c\u6548\u7387\u975e\u5e38\u9ad8\uff1b<\/li>\n
  2. \u5982\u679c\u8981\u66ff\u6362\u7684\u5b57\u7b26\u6570\u91cf\u8f83\u591a\uff0c\u5219\u63a8\u8350\u5728 for \u5faa\u73af\u4e2d\u8c03\u7528 replace() \u8fdb\u884c\u66ff\u6362\u3002<\/li>\n<\/ol>\n
    \u53ef\u884c\u7684\u65b9\u6cd5\uff1a<\/h6>\n

    1. \u94fe\u5f0freplace()
    \nstring.replace().replace()<\/p>\n

    1.x \u5728for\u5faa\u73af\u4e2d\u8c03\u7528replace()\u300c\u5728\u8981\u66ff\u6362\u7684\u5b57\u7b26\u8f83\u591a\u65f6\u300d<\/p>\n

    2. \u4f7f\u7528string.maketrans<\/p>\n

    3. \u5148 re.compile \u7136\u540e re.sub<\/p>\n

    \u2026\u2026<\/p>\n

    \n
    \n
    \n\n\n\n
    \n
    \n
    def a(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>chars =\u00a0<\/code>\"&#\"<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>for<\/code>\u00a0c in chars:<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>text = text.replace(c,\u00a0<\/code>\"\\\\\"<\/code>\u00a0+ c)<\/code><\/div>\n
    <\/div>\n
    def b(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>for<\/code>\u00a0ch in [<\/code>'&'<\/code>,<\/code>'#'<\/code>]:<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>if<\/code>\u00a0ch in text:<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>text = text.replace(ch,<\/code>\"\\\\\"<\/code>+ch)<\/code><\/div>\n
    <\/div>\n
    import<\/code>\u00a0re<\/code><\/div>\n
    def c(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>rx = re.compile(<\/code>'([&#])'<\/code>)<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>text = rx.sub(r<\/code>'\\\\\\1'<\/code>, text)<\/code><\/div>\n
    <\/div>\n
    <\/div>\n
    RX = re.compile(<\/code>'([&#])'<\/code>)<\/code><\/div>\n
    def d(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>text = RX.sub(r<\/code>'\\\\\\1'<\/code>, text)<\/code><\/div>\n
    <\/div>\n
    <\/div>\n
    def mk_esc(esc_chars):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>return<\/code>\u00a0lambda s:\u00a0<\/code>''<\/code>.join([<\/code>'\\\\'<\/code>\u00a0+ c\u00a0<\/code>if<\/code>\u00a0c in esc_chars\u00a0<\/code>else<\/code>\u00a0c\u00a0<\/code>for<\/code>\u00a0c in s])<\/code><\/div>\n
    esc = mk_esc(<\/code>'&#'<\/code>)<\/code><\/div>\n
    def e(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>esc(text)<\/code><\/div>\n
    <\/div>\n
    <\/div>\n
    def f(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>text = text.replace(<\/code>'&'<\/code>,\u00a0<\/code>'\\&'<\/code>).replace(<\/code>'#'<\/code>,\u00a0<\/code>'\\#'<\/code>)<\/code><\/div>\n
    <\/div>\n
    <\/div>\n
    def g(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>replacements = {<\/code>\"&\"<\/code>:\u00a0<\/code>\"\\&\"<\/code>,\u00a0<\/code>\"#\"<\/code>:\u00a0<\/code>\"\\#\"<\/code>}<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>text =\u00a0<\/code>\"\"<\/code>.join([replacements.get(c, c)\u00a0<\/code>for<\/code>\u00a0c in text])<\/code><\/div>\n
    <\/div>\n
    <\/div>\n
    def h(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>text = text.replace(<\/code>'&'<\/code>, r<\/code>'\\&'<\/code>)<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>text = text.replace(<\/code>'#'<\/code>, r<\/code>'\\#'<\/code>)<\/code><\/div>\n
    <\/div>\n
    <\/div>\n
    def i(text):<\/code><\/div>\n
    \u00a0\u00a0\u00a0\u00a0<\/code>text = text.replace(<\/code>'&'<\/code>, r<\/code>'\\&'<\/code>).replace(<\/code>'#'<\/code>, r<\/code>'\\#'<\/code>)<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n
    \u53c2\u8003\u94fe\u63a5\uff1a<\/h5>\n