日付から文字列(datetime→str) from datetime import datetime now = datetime.now() dt_str = now.strftime('%Y/%m/%d %H:%M:%S') # '2018/12/01 16:24:07' ISO形式だともっと楽! from datetime import datetime now = datetime.now() dt_str = now.isoformat() # '2018-12-01T16:23:01.339504' dt_str = now.isoformat(' ') # '2018-12-01 16:23:01.339504' dt_str = now.isoformat(' ', 'seconds')# Python3.6以降 # '2018-12-01 16:23:01' 日付と時間