explanin get_dummies in numpy code example

Example 1: how to get dummies in a dataframe pandas

df = pd.get_dummies(df, columns=['type'])

Example 2: get_dummies python

>>> pd.get_dummies(s)
   a  b  c
0  1  0  0
1  0  1  0
2  0  0  1
3  1  0  0