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how to count null values in pandas and return as percentage

percent_missing = df.isnull().sum() * 100 / len(df)
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how to count null values in pandas and return as percentage

percent_missing = df.isnull().sum() * 100 / len(df)
missing_value_df = pd.DataFrame({'column_name': df.columns,
                                 'percent_missing': percent_missing})
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how to count null values in pandas and return as percentage

missing_value_df.sort_values('percent_missing', inplace=True)
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