undestandimg df.iloc code example
Example 1: return df.iloc[1:]
>>> df.iloc[1:3, 0:3]
a b c
1 100 200 300
2 1000 2000 3000
Example 2: iloc python
>>> df.iloc[[0, 1]]
a b c d
0 1 2 3 4
1 100 200 300 400