Python small practice (b)

# 1, 99 output the multiplication table: 
for I in Range (1,10): 
    for J in Range (1, I + 1): 
        Print (. "{} * {} = {: <2}" the format (J, I, I * J), End = "") 
    Print () 

result:

 

 

 

 

 

# 2, 1234 these four digital design program calculates how many other with no repeat of the 3-digit numbers can be composed? What are they? 
0 = NUM 
for A in (1,2,3,4): 
    for B in (1,2,3,4): 
        for C in (1,2,3,4): 
            IF A == B or A = B or C == C =: 
                Continue 
            the else: 
                Print (STR (A) + STR (B) + STR (C)) 
                NUM = +. 1 
Print (NUM) 

result:

 

 

 

 

 

# 3, by implementing a calculator function, respectively, to run the program prompts the user to enter a number 1, number 2, 
# and then prompts the user to select: 1 plus [Save] [2] by [3] [4] In addition, depending on the selection perform different calculations and returns the result. 
counter DEF (): 
    num1 = int (INPUT ( "Please enter the first digit:")) 
    num2 = int (INPUT ( "Please enter the second number:")) 
    Algo = int (INPUT ( "plus [1] Save by [2] [3] [4] In addition ")) 
    Result = 0 
    IF Algo. 1 ==: 
        Result = + num1 num2 
    elif Algo == 2: 
        Result = num1 - num2 
    3 elif Algo ==: 
        Result = num1 * num2 
    elif Algo ==. 4: 
        result = num1 / num2 
    Print (result) 
counter () 

result:

 

 

 

 

 

# 4, the implementation process of registering a function, call the function to perform the following required function 
# 1, run the program prompts the user to enter a user name, password, confirm the password again. 
# 2, the user name interpretation has not been registered, if the user name is registered, then print the results of that username has already been registered. 
# 3, the user name is not registered, it is determined whether the two passwords are identical, if the registration is successful, otherwise give corresponding prompt. 
DEF Registered (): 
    USER_INFO = [{ "User": "User01", "pwd": "123"}, { "User": "named user02", "pwd": "111"}] 
    USER_NAME = [] 
    for I user_info in: 
        user_name.append (i [ "the user"]) 
    the while True: 
        username = the iNPUT ( "Please enter your user name:") 
        IF username in user_name: 
            Print ( "the user name is already registered, please re-enter! ") 
        the else: 
            the while True: 
                pwd1 the iNPUT = (" Please enter your password: "


                    print ( "Enter the password twice inconsistent, please re-enter your password!") 
                the else: 
                    print ( "Registration successful!") 
                    user_info.append ({ "the User": username, "pwd": pwd2}) 
                    BREAK 
            BREAK 
    Print (user_info) 
registered () 

result: