Rename columns in Pandas data frame

In [1]:

import pandas as pd
import numpy as np

In [10]:

df = pd.DataFrame(np.array([np.random.rand(4)])).T
df['Day']=['Day1','Day2','Day3','Day4']
df.columns=['Precipitation','Day']
df

Out[10]:

	Precipitation	Day
0	0.154892	Day1
1	0.182198	Day2
2	0.096904	Day3
3	0.384785	Day4

In [12]:

# Change Day to Days and Precipitation to Values
new_nm = {'Precipitation': 'Values',
         'Day': 'Weekday'}
df.rename(columns=new_nm,inplace=True)
df

Out[12]:

	Values	Weekday
0	0.154892	Day1
1	0.182198	Day2
2	0.096904	Day3
3	0.384785	Day4