在python中从字符串中分离字母和数字部分

import re

def separate_letters_and_numbers(string):
    letters = re.findall('[a-zA-Z]+', string)
    numbers = re.findall('\d+', string)
    return letters, numbers

string = "abc123def456"
letters, numbers = separate_letters_and_numbers(string)
print("Letters:", letters)
print("Numbers:", numbers)

Letters: ['abc', 'def']
Numbers: ['123', '456']

def separate_letters_and_numbers(string):
    letters = ''.join(filter(str.isalpha, string))
    numbers = ''.join(filter(str.isdigit, string))
    return letters, numbers

string = "abc123def456"
letters, numbers = separate_letters_and_numbers(string)
print("Letters:", letters)
print("Numbers:", numbers)

Letters: abcdef
Numbers: 123456