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YiLi225/category_backend.py

Last active September 21, 2020 03:01
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category_backend.py
## Convert Food_Category to the category-dtype and check backend codes ##
dairy_table['Food_Category'].astype('category').cat.codes
Out[97]:
index0 1
index1 3
index2 1
index3 1
index4 1
......
dtype: int8
## Check the memory usage
object_mem = dairy_table['Food_Category'].memory_usage(index=False, deep=True)
category_mem = dairy_table['Food_Category'].astype('category').memory_usage(index=False, deep=True)
print(f'Total bytes for the object-dtype = {object_mem}\nTotal bytes for the category-dtype = {category_mem}')
Total bytes for the object-dtype = 1051
Total bytes for the category-dtype = 427
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