Answer Happy

Write a program that simulates an authentication portal, the
program should contain two functions:
A) Signup function: it accepts an email and password from the
user, you should check the user's inputs by using RE (Regular
Expression).
The email input should be a valid email.
- The password must contain at least one special character,
digit.
and starts with an upper case letter. If the pattern matches
against the password and email, then show a welcome message and
save the user credentials to a file called "credenials. txt", every
single email and password in a new line, and separate them with a
comma (.).
B) Login function: ask the user to input his/her email and the
password. you have to check the input data, if it is true show the
user a welcome message, if not, let him/her try again.
The user is allowed to try login in only three times, and after
that shows
a message that the service.
blocked temporarily.
You have to ask the user to choose the flow by entering (1) for
signup and (2) for login.