使用Python如何将字符串中以美元符号($)开头的任意多个子字符串替换为字符串"abc"？

import re

def replace_dollar_strings(string):
    pattern = r'\$[^ ]*'  # 匹配以$开头的任意多个非空格字符
    replacement = "abc"
    return re.sub(pattern, replacement, string)

# 示例用法
string = "This is $test1 and $test2"
result = replace_dollar_strings(string)
print(result)

This is abc and abc