Conversión de cadenas de Python a tiempo

 

r [0] = '20181026'

dtr = datetime.datetime.strptime (r [0], "% Y% m% d") 
finalR = dtr.strftime ("% Y-% m-% d")

 

'2018-10-26'

 

 

referencia:

https://www.cnblogs.com/alfred0311/p/7885349.html