Python 时间 今日，昨天， 周， 月

# 今日
import time

today_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())

# 昨天
import datetime

cur_date = datetime.datetime.now().date()
yester_day = cur_date - datetime.timedelta(days=1)

# 周
import datetime

def get_current_week():
    monday, sunday = datetime.date.today(), datetime.date.today()
    one_day = datetime.timedelta(days=1)
    while monday.weekday() != 0:
        monday -= one_day
    while sunday.weekday() != 6:
        sunday += one_day
    return str(monday), str(sunday)

# 月
from datetime import datetime

currentYear = datetime.now().year  # 年
currentMonth = datetime.now().month  # 月
currentDay = datetime.now().day  # 天
year_month = str(currentYear) + "-" + str(currentMonth) + "-" + "01 00:00:00"
year_month_day = str(currentYear) + "-" + str(currentMonth) + "-" + str(currentDay) + " 23:59:59"