attributeerror - Excel AttributeError 中的文本传输错误

Question

    import pandas as pd
    import numpy as np
    addresses = pd.read_excel('address.xlsx')
    covid =  pd.read_excel( '21.06.2021.xlsx')
    result = covid.head(0)
    for row in addresses.iterrows():    
        result = result.append(covid[covid["Address___"].str.contains(row[1]["Street"],  regex=False, case=False)])
    result = result.replace(np.nan, 'non', regex=True)
    result.to_excel("21.06.2021_.xlsx")

对于addresses.iterrows()中的行：
result = result.append(covid[covid["Address___"].str.contains(row[1]["Street"], regex=False, case=False)]) 错误：
“ AttributeError Traceback（最近一次调用最后一次）”

该代码获取 Exel 表，搜索“地址___”列并使用从另一个 exel 中获取的列表检查地址。现在这个错误已经消失了。