Rename Pandas column values

Question

I have pandas dataframe like this

Column 1	Column 2
1	a
2	a
3	b
4	c
5	d

I want to name the column 2 as:

Column 1	Column 2
1	row1
2	row1
3	row2
4	row3
5	row4

I am trying the ways that are hard coded, like renaming each column, but in practice I have lots of rows so hard coding is not possible, is there any function or something python that can do the same task for me?

Asked By: MakM

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Source

Answer 1

Let’s try Series.factorize

df['Column2'] = (pd.Series(df['Column2'].factorize()[0])
                 .add(1).astype(str).radd('row'))

print(df)

   Column1 Column2
0        1    row1
1        2    row1
2        3    row2
3        4    row3
4        5    row4

Answered By: Ynjxsjmh

Rename Pandas column values

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