Consider the pandas DataFrame df: id var_day 0 1 x_0 1 2 y_0 2 3 x_1 Complete the code to return the output df['var'] = df. df Expected Output id var_day var 0 1 x_0 x 1 2 y_0 y 2 3 x_1 x code example
Example 1: iloc pandas
Purely integer-location based indexing for selection by position.
.iloc[] is primarily integer position based (from 0 to length-1 of the axis), but may also be used with a boolean array.
Example 2: iloc python
>>> df.iloc[[0, 1]]
a b c d
0 1 2 3 4
1 100 200 300 400