删除特殊字符和空白字符

import re

def remove_special_characters(text):
    pattern = r'[^a-zA-Z0-9\s]'  # 匹配非字母、非数字、非空格的字符
    text = re.sub(pattern, '', text)
    return text

text = "Hello, @world! This is a test."
clean_text = remove_special_characters(text)
print(clean_text)  # 输出: Hello world This is a test

def remove_special_characters(text):
    special_chars = "~`!@#$%^&*()-_+={}[]|\:;\"'<>,.?/"  # 定义特殊字符集合
    for char in special_chars:
        text = text.replace(char, '')
    text = text.replace(' ', '')  # 移除空格
    return text

text = "Hello, @world! This is a test."
clean_text = remove_special_characters(text)
print(clean_text)  # 输出: HelloworldThisisatest