如何删除包含多行内容的字符串中的空格？

import re

def remove_spaces(string):
    # 使用正则表达式将空格替换为空字符
    string_without_spaces = re.sub(r'\s+', '', string)
    return string_without_spaces

# 测试代码
string_with_spaces = '''
    Hello,
    
    This is a multi-line string
    
    with spaces.
'''

string_without_spaces = remove_spaces(string_with_spaces)
print(string_without_spaces)

Hello,Thisisamulti-linestringwithspaces.