Python3 Basic Knowledge Quiz

1, please use the code to achieve:
A. Using underscores to stitch each element of a list into a string, li= "Alexericrain"
B. Use underscores to stitch each element of the list into a string, li=[' Alex ', ' Eric ', ' Rain ' (optional)

Answer: String Join knowledge

li= "Alexericrain" v = "_". Join (LI) print (v)

　　

Li = [' Alex ', ' Eric ', ' rain ']v = ' _ '. Join (LI) print (v)

2. Create Fun Template Program

Requirements: Waiting for the user to enter a name, place, hobby, according to the user's name and hobbies to carry out arbitrary reality
such as: Dear and amiable xxx, favorite in XXX place dry xxx

Answer: Tem.format

Name = input ("Please enter Name:") Addre = input ("Please enter Address:") Doing = input ("Please enter what to do:") tem = "Dear amiable {0}, favorite in {1}, local dry {2}" V = Tem.format (name, addre,doing) Print (v)

3, the production of random verification code, not case-sensitive.

Process:
--‐
User Execution Program
--‐
Show the user the verification code that needs to be entered
--‐
User-entered values
The value entered by the user and the displayed value are the same as the actual correct information; otherwise continue to generate random verification code continue to wait for user input
Example of generating a random CAPTCHA code:

For:

Def check_code ():    import random    Checkcode = "For me in    Range" (4): Current        = Random.randrange (0,4)        If current! = I:            temp = Chr (Random.randint (65,90))        else:            temp = random.randint (0,9)        Checkcode + = str ( Temp)    return checkcodewhile True:    code = check_code ()    print (code)    v = input (">>>")    v1 = v.upper ()    If v1 = = Code:        print ("input correct")        exit ()

4. Production form

Loop Prompt user input: User name, password, mailbox
(Requires the user to enter a length of not more than 20 characters, if more than the first 20 characters are valid)
If the user enters Q or q, the input is no longer entered and the user input is printed in a tabular format
A: Using format, index, and Expandtabs

s = "while True:    v1 = input (" Enter user name: ")    if V1 = =" Q "or V1 = =" Q ":        break    v2 = input (" Please enter password: ")    v3 = INP UT ("Please enter email:")    template = "{0}\t{1}\t{2}\n"    v = Template.format (v1, v2, v3)    s = s + vprint (S.expandtabs (20))

　　

　　

　

Python3 Basic Knowledge Quiz