将字符拆分为字母和数字

import re

def split_letters_and_numbers(input_string):
    letters = re.findall(r'[a-zA-Z]', input_string)
    numbers = re.findall(r'\d', input_string)
    return ''.join(letters), ''.join(numbers)

# 示例用法
input_str = "Hello123World456"
letters, numbers = split_letters_and_numbers(input_str)
print(f"Letters: {letters}")  # 输出: Letters: HelloWorld
print(f"Numbers: {numbers}")  # 输出: Numbers: 123456

import re

def split_letters_and_numbers(input_string):
    letters = re.findall(r'[a-zA-Z]+', input_string)
    numbers = re.findall(r'\d+', input_string)
    return ''.join(letters), ''.join(numbers)

# 示例用法
input_str = "Hello123World456"
letters, numbers = split_letters_and_numbers(input_str)
print(f"Letters: {letters}")  # 输出: Letters: HelloWorld
print(f"Numbers: {numbers}")  # 输出: Numbers: 123456

import re

def split_letters_and_numbers(input_string):
    if not input_string:
        return "", ""
    
    letters = re.findall(r'[a-zA-Z]', input_string)
    numbers = re.findall(r'\d', input_string)
    return ''.join(letters), ''.join(numbers)

# 示例用法
input_str = ""
letters, numbers = split_letters_and_numbers(input_str)
print(f"Letters: {letters}")  # 输出: Letters: 
print(f"Numbers: {numbers}")  # 输出: Numbers: