Alphabetical Difference Finder

This function takes two strings as arguments and compares them to return the alphabetical difference. If the strings are of different lengths, the shorter one is filled with empty characters.

Technology Stack : string, zip_longest, itertools.chain

Code Type : String processing

Code Difficulty : Intermediate

                
                    
def aordiff(arg1, arg2):
    # 对两个字符串按照字母顺序进行差分
    if not isinstance(arg1, str) or not isinstance(arg2, str):
        raise ValueError("Both arguments must be strings.")
    
    # 使用内置的zip_longest和itertools.chain来处理不同长度的字符串
    from itertools import chain, zip_longest
    
    # 创建一个迭代器，用于处理不同长度的字符串
    diff = chain.from_iterable(zip_longest(arg1, arg2, fillvalue=''))
    
    # 比较字符，并返回差分结果
    return ''.join(c1 - c2 for c1, c2 in diff if c1 != c2)