python有没有好的去处字符串中特殊字符的方法
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直接用str.replace就可以了。old表示将要替换的子串，new表示目标字符串，count表示替换个数。
>>> help(str.replace)
Help on method_descriptor:
replace(...)
S.replace(old, new[, count]) -> str
Return a copy of S with all occurrences of substring
old replaced by new. If the optional argument count is
given, only the first count occurrences are replaced.
>>> help(str.replace)
Help on method_descriptor:
replace(...)
S.replace(old, new[, count]) -> str
Return a copy of S with all occurrences of substring
old replaced by new. If the optional argument count is
given, only the first count occurrences are replaced.
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