how to use datetime in ppython

from datetime import datetime, timedelta

d = datetime.today() - timedelta( days = 1)

print( d.strftime( "%Y%m%d" ) )

from datetime import datetime

custom_date_time = datetime(2021, 7, 23, 17, 30, 29, 431717)
print(custom_date_time)

# Output:
# 2021-07-23 17:30:29.431717

  import datetime

x = datetime.datetime.now()
print(x)