我所有的.py都要做以下import

if hasattr(AAAAA_TOOL, 'ta'):
    import cccccc as ta

if hasattr(AAAAA_TOOL, 'ba'):
    import bbbbb as ba
    import pandas as pd  
if hasattr(AAAAA_TOOL, 'aa'):
    import aaaaa as aa

我怎么避免每个文件都要拷贝一下这些语句呢
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