pandas.DataFrame.memory_usage
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DataFrame.memory_usage(index=True, deep=False)[source]
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Memory usage of DataFrame columns. Parameters: index : bool Specifies whether to include memory usage of DataFrame’s index in returned Series. If index=True(default is False) the first index of the Series isIndex.deep : bool Introspect the data deeply, interrogate objectdtypes for system-level memory consumptionReturns: sizes : Series A series with column names as index and memory usage of columns with units of bytes. See also NotesMemory usage does not include memory consumed by elements that are not components of the array if deep=False 
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Licensed under the 3-clause BSD License.
    https://pandas.pydata.org/pandas-docs/version/0.20.3/generated/pandas.DataFrame.memory_usage.html