dfc.memory_usage(deep=True)
Index 128 str1 180 str2 180 str3 180 float64 24 int64 24 float32 24 int8 24 bool 3 date1 201 date2 201 date3 201 delta 189 dtype: int64
dft.memory_usage(deep=True)
Index 128 str1 180 str2 180 str3 63 float64 24 int64 24 float32 12 int8 3 bool 3 date1 24 date2 24 date3 24 delta 24 dtype: int64