Pytthon Foundation first day--if judgment, while loop, for loop, Python string

1. Guess The Age

User_lisa =   # defines an age count = 0  # loop Count while Count < 3:  # Cycles less than 3 times    user = input (' Please your enter ' Rname: '). Strip ()  # User input, go to both spaces if    user.isdigit ():  # If the input is a numeric string, the user        = Int (user) # is converted to an  integer type        if user = = User_lisa:  # Users enter a value equal to the defined value, exit the entire program            print (' You got it ')              exit ()          elif user > user_lisa:< c14/># user input value is greater than the defined value, prompt to lose dot            print (' try smaller ')          else:            user < User_lisa   # users enter a value less than the defined value, prompted to lose a large point            print (' Try Bigger ')    else:        print (' Try Again ')   # If user input is not a number, prompt retry    count + = 1   # Number of cycles added 1print (' Too many times ') # Too many tips

2. User Login

Method One:

Count = 0user_name = ' Lisa ' pwd = ' 123 ' While Count <3:    username =input (' Please enter your username: ')    password = Input (' Please enter your password: ')    if username = = User_name and Password = = pwd: While        True:            user_cmd = Inpu T (' Please enter your cmd: '). Strip ()            print (' The cmd is%s '%user_cmd ')            if user_cmd = = ' Q ': Break                break    Else:        print (' Login failed ')    count + = 1

Method Two:

Count = 0user_name = ' Lisa ' pwd = ' 123 ' While Count <3:    username =input (' Please enter your username: ')    password = Input (' Please enter your password: ')    if username = = User_name and Password = = pwd: While        True:            user_cmd = Inpu T (' Please enter your cmd: '). Strip ()            print (' The cmd is%s '%user_cmd)            if user_cmd = = ' Q ':                exit ()    else:        print (' Login failed ')    count + = 1

3, use while loop output 1, 2, 3, 4, 5, 6, 8, 9, ten

# use while loop output 1, 2, 3, 4, 5, 6, 8, 9, 10count = 1       # to define the initial value while count < one:  # when Count is less than 11 o'clock, execute the following code    if Count = = 7:
   # when Count equals 7 o'clock, Count is 1, and the loop is returned        by count + = 1        continue print    (count) # Prints the value of count    + = 1 # count self plus 1

Output Result:

1234568910

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Pytthon Foundation first day--if judgment, while loop, for loop, Python string