Answers for "how to add index in dataframe python"

3

pandas create a column from index

df.reset_index(level=0, inplace=True)
Posted by: Guest on February-13-2020
2

set index in datarame

df = df.set_index('col')
Posted by: Guest on May-18-2020
1

add an index column pandas

import numpy as np
import pandas as pd
df = pd.DataFrame({'month': [2, 5, 8, 10],
                   'year': [2017, 2019, 2018, 2019],
                   'sale': [60, 45, 90, 36]})
df.set_index('month')
Posted by: Guest on July-01-2020

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