That concludes this tutorial. Just a recap we have explored there.sub()method capability to replace special characters in a string. We hope that this knowledge gained is useful and that you will use it in your future Python regex projects....
print(s.replace('hello', 'thanks')) #修改字符串 print(s.find('l')) #在字符串中找l的索引 print(s.upper()) #变大写 print(s.lower()) #变小写sentence = "The cat is brown" q = "cat"if q == sentence.strip(): #strip()去掉空白 print('strings equal') #用==判断字符串是否相等i...
replace(old, new ,max]) 把 将字符串中的 str1 替换成 str2,如果 max 指定,则替换不超过 max 次。 split(str="", num=string.count(str)) num=string.count(str)) 以 str 为分隔符截取字符串,如果 num 有指定值,则仅截取 num 个子字符串 strip([chars]) 在字符串上执行 lstrip()和 rstrip() ...
Checking if a string contains any special characterTo check for the presence of any special character in a string, we will compare all special characters for characters in the string. An effective way to do this is using regular expressions which provides methods for comparison....
The encoding in which to encode the string. errors The error handling scheme to use for encoding errors. The default is 'strict' meaning that encoding errors raise a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and
The encoding in which to encode the string. errors The error handling scheme to use for encoding errors. The default is 'strict' meaning that encoding errors raise a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and
print("Original string:",string) # Using replace() method # Remove special characters from the string spe_char_to_remove = [':', ';', '!'] for character in spe_char_to_remove: string = string.replace(character, '') # Example 4: Using filter() and join() methods ...
importredefescape_regex_string(input_string):# 定义特殊字符列表special_chars=['.','^','$','*','+','?','{','}','[',']','\\','|','(',')']# 处理特殊字符并转义forcharinspecial_chars:input_string=input_string.replace(char,'\\'+char)returninput_string ...
Return a copy of the string S with leading whitespace removed. If chars is given and not None, remove characters in chars instead."""return""#把右边的chars截断defrstrip(self, chars=None):#real signature unknown; restored from __doc__"""S.rstrip([chars]) -> str ...
If there are two arguments, they must be strings of equal length, and in the resulting dictionary, each character in x will be mapped to the character at the same position in y. If there is a third argument, it must be a string, whose characters will be mapped to None in the result...