Handle two columns with same name in dataframe validation

[GeorgWa]

df = pd.DataFrame({
    'a' : [1,2,3],
    'c' : [7,8,9]
})
df = df[['a', 'a', 'c']]

df['a'].dtype

AttributeError: 'DataFrame' object has no attribute 'dtype'

[jalew188]

Shall we address this in alphabase? I think this is general issue in pandas?