import datetime

安装 pip install datetime

import datetime
# 时间格式转成字符串
a = datetime.datetime.now().strftime('%Y/%m/%d %H:%M:%S')
# 字符串转成时间格式
b = datetime.datetime.strptime('2018-11-09 14:42:36','%Y-%m-%d %H:%M:%S')
# 当天日期
c = datetime.datetime.now().date()
#当前时间
d = datetime.datetime.now().time()
e = datetime.datetime.now()

#时间格式转成字符串
print(datetime.datetime.now().strftime('%Y/%m/%d %H:%M:%S'))
print(type(c))
print(a)
print(b)
print(c)
print(d)
print(e)

运行结果：