Python learning experience-basic knowledge (i)

First, login verification

Requirements: Verify that the login username and password are correct, and that the login is locked after three unsuccessful logons.

Implementation method One:

I=0while i<3:    s=input (' Please enter user name: ')    d=input (' Please enter password: ')    if s== ' dage ' and d== ' 123456 ':        print (' Congratulations login successful! ')        break    Else:        print (' username or password is wrong, please enter ' again ')    I=i+1else:    print (' input more than three times, stopped input ')

Implementation method Two:

For I in range (3):    s=input (' Enter user name: ')    d=input (' Please enter password: ')    if s== ' dage ' and d== ' 123456 ':        print (' Congratulations login success! ')        Break    Else:        print (' username or password is wrong! ') else:    print (' Enter more than 3 times, stop login ')

Implementation method Three:

#name: username #pwd: User password #num: number of validations Def Denglu (name,pwd,num):    c=num for    i in range (num):        a=input (' Please enter user name: ')        b=input (' Please enter user password: ')        if A==name and b==pwd:            print (' Congratulations on your landing success! ')            Break        Else:            print (' User name or user password is wrong! ')            C=c-1            Print (' You have%d input chance '%c)    else:        print (' You have entered%d times incorrectly, suspend login! ') %num) Denglu (' Dage ', ' 123456 ', 3)

Note: The code can be reused as much as possible.

Python learning experience-basic knowledge (i)