#import the re module
#take input of string
#fill all alphabet character from the string
print("Character that are present in string :",x)
Character that are present in string : ['s', 't', 'r', 'i', 'n', 'g']
Character that are present in string : 
-In this program, we take a input of string and find all string character by using re.findall() function where 'D' is the special sequence which neglect the numeric string.