python使用正则表达式删除字符串中的其它字符只保留数字和字母

#python使用正则表达式删除字符串中的其它字符只保留数字和字母

# Python code to demonstrate# to remove all the characters# except numbers and alphabetsimport re# initialising stringini_string = "123abcjw:, .@! eiw"# printing initial stringprint ("initial string : ", ini_string)# function to demonstrate removal of characters# which are not numbers and alphabets using reresult = re.sub([\W_]+