how to convert each string to a category or int in python dataframe

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Elías
09 Jan 2020
1In [3]: df = pd.DataFrame({"A": ["a", "b", "c", "a"]})
2
3In [4]: df["B"] = df["A"].astype('category')
4
5In [5]: df
6Out[5]: 
7   A  B
80  a  a
91  b  b
102  c  c
113  a  a
12
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