python pandas dataframe values to 0 1

Question

Name	yr
Dave	2019
Dave	2020
stu	2019
stu	2021

and I want to result like

Name	2019_yr	2020_yr	2021_yr
Dave.	1.	1.	0
stu.	1.	0.	1

I tried to do use get_dummies but the result is like

Name	yr_2018	yr_2019	yr_2021	yr_2022
Dave	0	1	0	0
Dave	1	0	0	0
stu	0	0	0	1
stu	0	0	1	0

Answer 1

If need 0, 1 ouput is necessary aggregate max:

#Name is column
df = pd.get_dummies(df.set_index('Name')).groupby('Name').max()

---

#Name is index
df = pd.get_dummies(df).groupby('Name').max()

Or:

df = pd.crosstab(df['Name'], df['yr']).add_suffix('_yr').clip(upper=1)