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This article is to share with you about how to use the datetime module in python, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

Create a new python file named py3_calc_date.py, and write the operation code in this file:

The first example of import datetimeimport calendar#: # calculate how long it will take to pay off the credit card # define the total amount of credit card outstanding balance = 1000 yuan, define the interest rate as 13%interest_rate = 13 *. 0 yuan, define monthly_payment = 50 yuan per month to get today's today = datetime.date.today () # print (today) # get how many days this month days_in_current_month = calendar.monthrange (today.year) Today.month) [1] # returns a tuple # the first parameter is the day of the week # the second parameter is the number of days this month print (days_in_current_month) # get a few days to the end of the month days_till_end_month = days_in_current_month-today.dayprint (days_till_end_month) # get the start date of next month # as our first repayment month start_date = today + datetime.timedelta ( Days=days_till_end_month + 1) print (start_date) # defines the repayment date to be equal to the starting date end_date = start_datewhile balance > 0: # the cost of obtaining interest interest_charge = (interest_rate / 12) * balance # the total amount required to be repaid balance + = interest_charge # minus the amount repaid Remaining balance to be returned-= monthly_payment # rounded to keep two small digits balance = round (balance,2) if balance

< 0: balance = 0 #打印还款月，剩余待还金额 print(end_date,balance) #获取还款月的总天数 days_in_current_month = calendar.monthrange(end_date.year,end_date.month)[1] #获取下一还款月 end_date = end_date + datetime.timedelta(days=days_in_current_month) #运行就可以查看到需要多少个月还清信用卡了 #第二个例子：#算一下多少周可以减肥到目标体重#当前体重150斤current_weight = 150#目标体重100斤goal_weight = 100#假设一周减掉1.5斤avg_lose_weight_week = 1.5#获取开始日期 start_date = datetime.date.today()#定义达到目标体重的结束日期end_date = start_datewhile current_weight >

Goal_weight: current_weight-= avg_lose_weight_week end_date + = datetime.timedelta (days=7) print (end_date) print (f 'needs {(end_date-start_date). Days / / 7} weeks!)

# third example # calculate when fans can reach the target number of 10,000 fans goal_subs = 10,000 million current number of fans current_subs = 8500 fans and how many more fans need to reach the target subs_to_goal = goal_subs-current_subs# assume that the number of fans per day increases to 200 avg_subs_day = 200import math# calculate how many days it takes to reach the target days_to_goal = math.ceil (subs_to_goal/avg_subs_day ) # calculate when the target is reached today = datetime.date.today () goal_subs_date = today + datetime.timedelta (days=days_to_goal) print (goal_subs_date) above is how to use the datetime module in python The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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