将字符串中的 (') 替换为 ()，但不要替换开头和结尾

Question

我有一个字符串，我想在其中将单引号转换为两个单引号。但不要转换字符串开头和结尾的单引号。

对于输入和输出：

输入->test is 'Are you there'输出->test is 'Are you there'

输入->test is 'Are y'ou there'输出->test is 'Are y''ou there'

我使用以下代码：

re.compile(r"(?<!()'(?!))").sub(string="test is 'Are you there'", repl="''")

但这会导致test is ''Are you there''

Answer 1

尝试使用Lookbehind & Lookahead

前任：

import re
d = ["test is 'Are you there'", "test is 'Are y'ou there'"]
for i in d:
print(re.sub(r"(?<=[A-Za-z])'(?=[A-Za-z])", "''", i))

输出：

test is 'Are you there'
test is 'Are y''ou there'