先给出结论:
可行的方法:
1. 链式replace()
1.x 在for循环中调用replace() 「在要替换的字符较多时」
2. 使用string.maketrans
3. 先 re.compile 然后 re.sub
……
def a(text): chars = "&#" for c in chars: text = text.replace(c, "\\" + c)def b(text): for ch in ['&','#']: if ch in text: text = text.replace(ch,"\\"+ch)import redef c(text): rx = re.compile('([&#])') text = rx.sub(r'\\\1', text)RX = re.compile('([&#])')def d(text): text = RX.sub(r'\\\1', text)def mk_esc(esc_chars): return lambda s: ''.join(['\\' + c if c in esc_chars else c for c in s])esc = mk_esc('&#')def e(text): esc(text)def f(text): text = text.replace('&', '\&').replace('#', '\#')def g(text): replacements = {"&": "\&", "#": "\#"} text = "".join([replacements.get(c, c) for c in text])def h(text): text = text.replace('&', r'\&') text = text.replace('#', r'\#')def i(text): text = text.replace('&', r'\&').replace('#', r'\#')参考链接:
http://stackoverflow.com/questions/3411771/multiple-character-replace-with-python
http://stackoverflow.com/questions/6116978/python-replace-multiple-strings
http://stackoverflow.com/questions/8687018/python-string-replace-two-things-at-once
http://stackoverflow.com/questions/28775049/most-efficient-way-to-replace-multiple-characters-in-a-string
总结
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