1, a digital format formatted
<: Left
>: Right alignment
a = "random numbers {:> 4d}". format (1) result 0001
2, the current time
import datetime
now = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
1, a digital format formatted
<: Left
>: Right alignment
a = "random numbers {:> 4d}". format (1) result 0001
2, the current time
import datetime
now = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')