python日期自动化

# 获取昨天和上个月的日期
import datetime
today = datetime.date.today()
day = (today - datetime.timedelta(days=1)).strftime('%Y%m%d')
mon = (today - datetime.timedelta(days=1)).strftime('%Y%m')
yyyy = (today - datetime.timedelta(days=1)).strftime('%Y')
mm = int((today - datetime.timedelta(days=1)).strftime('%m'))#转换为整数去掉前导0
last_month_end = (today.replace(day=1) - datetime.timedelta(days=1)).strftime('%Y%m%d')
last_mon = last_month_end[:6]

print(today)
print(day)
print(mon)
print(yyyy)
print(mm)
print(last_month_end )
print(last_mon )