try:_except:_finally:_
由于finally无论如何都会执行 如果try和except都有问题 还是执行finally 就会可能发生AttributeError 报错 局部变量先被引用
UnboundLocalError: local variable 'df_1' referenced before assignment
try:_except:_finally:_
由于finally无论如何都会执行 如果try和except都有问题 还是执行finally 就会可能发生AttributeError 报错 局部变量先被引用
UnboundLocalError: local variable 'df_1' referenced before assignment
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