read a file that contains random characters and digits as name and separate each character and digit in python

main.py
# opening file in read mode
file = open("filename.txt", "r")

name = file.read()  # reading the contents of the file

# creating empty lists
characters = []
digits = []

# looping through each character of the name
for char in name:
    if char.isalpha():  # checking if character is an alphabet
        characters.append(char)  # appending the character to characters list
    elif char.isdigit():  # checking if character is a digit
        digits.append(char)   # appending the digit to digits list

# Joining the individual characters and digits back to form the original name
name_separated = "".join(characters + digits)

print(name_separated) # printing the name with characters and digits separated
file.close()   # closing the file
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