EmailValidationProgv3.py

EmailValidationProgv3.py

## validate an email address 

def main():
    emailaddress = getmyEmail()
    print(emailaddress)
    print (len(emailaddress))        
    
    if checkatsigninemail(emailaddress) == True and validationwithdot(emailaddress) == True:
        print("meets all the parameters for email")
    else:
        print("this is invalid")
        


def checkdotafterat(x):
    x.index("@")
    

def getmyEmail():
    email = ""
    while len(email) <1:
        email =input("Pls enter an email >> ")
        if len(email)>=1:
            return email
        else:            
            print("pls enter something")
    


def checkatsigninemail(email):
    if "@" in email and email.count("@") == 1 and email.index("@") > 0:
        email.split("@")
        atpos = email.index("@")
        endofemail = len(email)
        emailafteratsign = email[atpos:endofemail]
        if  len(emailafteratsign) > 0 and "." in emailafteratsign and emailafteratsign.count("@") ==1:
            atposdot = emailafteratsign.index(".")
            emailafteratandsign = emailafteratsign[atposdot:len(emailafteratsign)]
            if atposdot >1 and emailafteratandsign[0:len(emailafteratandsign)].isalpha:
                return True
            else:
                print("must be a character after the @ sign followed by some text then a dot")         
            
        elif len(emailafteratsign) < 0:
            print("must have something after the @ sign to be valid")
        elif not "." in emailafteratsign:
            print("has to have a '.' somewhere after the  @ sign")
    else:
        if not "@" in email:
            print("must have an @ sign")
        elif email.count("@") > 1:
            print("too many @'s")
        elif email.index("@") == 0:
            print("can not have an @ for openers")
        return False

def validationwithdot(email):
    if email.count(".") >= 1:
        return True
    else:
        print("must have a dot '.' in there somewhere")
        return False 
    




main()