re.sub用于替换字符串中的匹配项
re.sub(pattern, repl, string, count=0)
# 代码
代码语言:javascript复制import re
phone = "2004-959-559 # 这是一个电话号码"
# 删除注释
num = re.sub(r'#.*$', "", phone)
print("电话号码:", num)
# 移除非数字的内容
num = re.sub(r'D', "", phone)
print("电话号码:", num)
# 将匹配的数字乘以2
def double(matched):
value = int(matched.group('value'))
return str(value * 2)
s = 'A23G4HFD567'
print(re.sub('(?P<value>d )', double, s))
# 运行结果
代码语言:javascript复制电话号码: 2004-959-559
电话号码: 2004959559
A46G8HFD1134