先给出结论:
可行的方法:
1. 链式replace()
string.replace().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 re def 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