r [0] = '20181026'
dtr = datetime.datetime.strptime (r [0], "% Y % m % d") finalR = dtr.strftime ( "% Y- % m- % d")
'2018-10-26'
참고:
r [0] = '20181026'
dtr = datetime.datetime.strptime (r [0], "% Y % m % d") finalR = dtr.strftime ( "% Y- % m- % d")
'2018-10-26'
참고: