set index to column pandas
df = df.set_index('col')
df['col'] = df.index
set index to column pandas
df = df.set_index('col')
df['col'] = df.index
change index to dataframe pandas
#cree un indice par defaut sur la base de donnee
df.reset_index()
dataframe change index
>>> df.set_index('month')
year sale
month
1 2012 55
4 2014 40
7 2013 84
10 2014 31
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