How can Python remove special characters from a string?

Regular expressions can be used to remove special characters from a string.

Here is a sample code:

import re

def remove_special_characters(string):
    # 定义正则表达式，匹配特殊字符
    pattern = r'[^\w\s]'
    # 使用sub方法替换特殊字符为空字符串
    return re.sub(pattern, '', string)

# 示例输入
input_string = "Hello, World!#@"
# 调用函数去掉特殊字符
output_string = remove_special_characters(input_string)
# 输出结果
print(output_string)  # 输出: Hello World

The function remove_special_characters in the above code uses the re.sub method to replace special characters in the string. The regex pattern [^\w\s] matches any character that is not a letter, digit, underscore, or space. Replacing these characters with an empty string removes the special characters.

Please note that the code above only removes special characters. If you also want to remove spaces and other characters, you can modify the regular expression pattern as needed.