Look for, find and delete/remove any empty column in a dataframe thanks to Python.
# Find the columns where each value is null
empty_cols = [col for col in df.columns if df[col].isnull().all()]
# Drop these columns from the dataframe
df.drop(empty_cols,
axis=1,
inplace=True)
empty_cols = [col for col in df.columns if df[col].isnull().all()]
df.drop(empty_cols, axis=1, inplace=True)
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