一、日期和持久化
import datetime #年月日 today = datetime.date.today() print(today) print(today.year) print(today.day) print(today.weekday()) #时间 now = datetime.datetime.now() print(now.year) print(now.second) #字符串转换 s = '2018-3-15' t = datetime.datetime.strptime(s, '%Y-%m-%d') print(t) #时间转换为字符串 now = datetime.datetime.now().strftime('%Y/%m/%d/%H/%M/%S') print(now) #pickle的使用 import pickle person = {'name': 'Tom', 'age': 20} s = pickle.dumps(person) p = pickle.loads(s) print(p) pickle.dump(person, open('1.db', 'wb')) p = pickle.dump(open('1.db', 'rb')) print(p)