Advanced Python course of besat school - first code chalange

apcb-fcc-202357-contacts.py

# CodeAgha 2023 - Advanced Python course of besat school - first code chalange

import re # import regex module

# regex for phone number validation
regex = r"((0?9)|(\+?989))((14)|(13)|(12)|(19)|(18)|(17)|(15)|(16)|(11)|(10)|(90)|(91)|(92)|(93)|(94)|(95)|(96)|(32)|(30)|(33)|(35)|(36)|(37)|(38)|(39)|(00)|(01)|(02)|(03)|(04)|(05)|(41)|(20)|(21)|(22)|(23)|(31)|(34)|(9910)|(9911)|(9913)|(9914)|(9999)|(999)|(990)|(9810)|(9811)|(9812)|(9813)|(9814)|(9815)|(9816)|(9817)|(998))\W?\d{3}\W?\d{4}"

contacts = { 
     "Ali": "+989123458965",
     "Sara": "+989121068969",
     "Somayeh": "+9809300010123",
     "Heshmat": "+989022728293"
} # all contacs in a dictionary


ca = True # For continue the program

# program main loop
while ca :
    print("Your contacts are:" , end=" ")
    print(*contacts.keys(), sep=", ")
    cname = input("Enter name of contact for add or view ditails: ") # inputed name

    if(contacts.keys().__contains__(cname)):
       print("\n{}\n".format(contacts[cname]))
    else:
        c = True
        while(c): # loop of user phonenumber validation and adding new contact
            phnum = input("\nThe inputed name was not found in contacts list\n Enter a phone number to add or enter \"x\" for cancel: ") # inputed phone number
            if(phnum.lower() == "x"): # command 'x' for exit from user adding
                c = False # exit validation loop
            elif(re.findall(regex,phnum)):
                contacts[cname] = phnum # add contact
                print("\nOK\n")
                c = False # exit validation loop
            else:
                print("\nInvalid opration\n") # error message