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This article mainly introduces "how to use Python to write login function". In daily operation, I believe many people have doubts about how to use Python to write login function. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubt of "how to use Python to write login function". Next, please follow the editor to study!

Demand:

Write a login program

1. A maximum of 3 login failures

2. Login is successful. Welcome to xx login. Today's date is xxx, and the program ends.

3. To verify whether the input is empty, the account number and password cannot be empty.

4. The account is not case-sensitive

Import datetimecount = 0while count < 3: username = input ("username:") pwd = input ("password:") date = datetime.date.today () if username.strip () = "" or pwd.strip () = "": print ("you entered a null value, please re-enter") count = count + 1continueelif username = "shenxianlu" and pwd = = "123456": print ("% s, welcome to login Today's date is:% s "% (username, date) breakelse: print (" Please try again if you entered the account password incorrectly ") count = count + 1else: print (" your three opportunities have been used up, you can't continue to enter ") so far, the study on" how to write login function using Python "is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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