python - 正则表达式无法匹配python中的特殊符号

Question

我有一个字符串: s = "we are \xaf\x06OK\x03family, good"，我想用 '' 替换\xaf,\x06和\x03''，正则表达式是pat = re.compile(r'\\[xX][0-9a-fA-F]+')，但它不能匹配任何东西。代码如下：

pat = re.compile(r'\\[xX][0-9a-fA-F]+')
s = "we are \xaf\x06OK\x03family, good"
print(s)
print(re.sub(pat, '', s))

结果是

we are ¯OKfamily, good we are ¯OKfamily, good,

但我怎么能得到we are OK family, good

标签： pythonregex

Answer 1

您必须将输入string s视为原始字符串，然后才能工作，请参见下面的示例：

pat = re.compile(r'\\[xX][0-9a-fA-F].')
s = r"we are \xaf\x06OK\x03family, good"
print(s)
print(re.sub(pat, '', s))