Python programming

Question

Question:

A website requires the users to input username and password to register. Write a program to check the validity of password input by users.

Following are the criteria for checking the password:

1. At least 1 letter between [a-z]

2. At least 1 number between [0-9]

1. At least 1 letter between [A-Z]

3. At least 1 character from [$#@]

4. Minimum length of transaction password: 6

5. Maximum length of transaction password: 12

Your program should accept a sequence of comma separated passwords and will check them according to the above criteria. Passwords that match the criteria are to be printed, each separated by a comma.

Example

If the following passwords are given as input to the program:

ABd1234@1,a F1#,2w3E*,2We3345

Then, the output of the program should be:

ABd1234@1

Hints:

In case of input data being supplied to the question, it should be assumed to be a console input.

Answer 1

user_input = input()

passwords = user_input.split(",")

special_chars = ["$","#","@"]

valid = []

for x in passwords:

#check length

if(len(x) > 12 or len(x) < 6):

continue

#check if has both uppercase and lower

if (x.isupper() or x.islower()):

continue

#check numbers

has_number = any(char.isdigit() for char in x)

if(not has_number):

continue

#check if has special character

has_char = any(char in special_chars for char in x)

if(not has_char):

continue

#only reached if all checks are passed

valid.append(x)

print(valid)