我有这样的事情：
text = 'This text is very very long.'
replace_words = ['very','word']
for word in replace_words:
text = text.replace('very','not very')
我只想替换第一个“very”或选择覆盖哪个“very”。我正在对大量文本执行此操作，因此我想控制重复单词的替换方式。
text = text.replace("very", "not very", 1)
>>> help(str.replace)
Help on method_descriptor:
replace(...)
S.replace (old, new[, count]) -> string
Return a copy of string 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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