python-pandasHow to convert yyyymmdd string to datetime

Usage example

import pandas as pd

df = pd.DataFrame({
  'date_str': ['20221003', '20221105', '20210312'],
  'value': [1,2,3]
})

df['date'] = pd.to_datetime(df['date_str'])
print(df)

output

   date_str  value       date
0  20221003      1 2022-10-03
1  20221105      2 2022-11-05
2  20210312      3 2021-03-12