# fnc that creates a contact w/ the provided info.
def add_contact(contacts, first_name, last_name, email, phone_number, age):
    contacts[first_name + " " + last_name] = {}
    contacts[first_name + " " + last_name]['first_name'] = first_name
    contacts[first_name + " " + last_name]['last_name'] = last_name
    contacts[first_name + " " + last_name]['email'] = email
    contacts[first_name + " " + last_name]['phone_number'] = phone_number
    contacts[first_name + " " + last_name]['age'] = age


# fnc that checks if a contact exsits.
def has_contact(contacts, first_name, last_name):
    if (first_name + " " + last_name) in contacts:
        return True
    else:
        return False


# fnc that gets a contacts age.
def get_contact_age(contacts, first_name, last_name):
    if has_contact(contacts, first_name, last_name):
        return contacts[first_name + " " + last_name]["age"]
    else:
        return None


# fnc that gets a contacts email.
def get_contact_email(contacts, first_name, last_name):
    if has_contact(contacts, first_name, last_name):
        return contacts[first_name + " " + last_name]["email"]
    else:
        return None


# fnc that gets a contacts number.
def get_contact_phone_number(contacts, first_name, last_name):
    if has_contact(contacts, first_name, last_name):
        return contacts[first_name + " " + last_name]["phone_number"]
    else:
        return None


# fnc that returns a contact in a string.
def get_contact_as_str(contacts, first_name, last_name):
    if has_contact(contacts, first_name, last_name):
        email = get_contact_email(contacts, first_name, last_name)
        phone_number = get_contact_phone_number
        (contacts, first_name, last_name)
        age = get_contact_age(contacts, first_name, last_name)
        str = first_name + " " + last_name + "\n" + "E-mail: " + email
        + "\n" + "Phone#: " + phone_number + "\n" + "Age: " + age
        return str
    else:
        return ("No contact data for " + first_name + " "
                + last_name + " found")


# fnc that allows you to update any field of a contact.
def update_info(contacts, first_name, last_name, what, value):
    if has_contact(contacts, first_name, last_name):
        contacts[first_name + " " + last_name][what] = value
        return True
    else:
        return False


# fnc that updates the contacts age using the update_info fnc.
def update_contact_age(contacts, first_name, last_name, age):
    return update_info(contacts, first_name, last_name, "age", age)


# fnc that updates the contacts email using the update_info fnc.
def update_contact_email(contacts, first_name, last_name, email):
    return update_info(contacts, first_name, last_name, "email", email)


# fnc that updates the contacts phone using the update_info fnc.
def update_contact_phone_number(
        contacts,
        first_name,
        last_name,
        phone_number,
        ):
    return update_info(contacts, first_name, last_name, 'phone_number',
                       phone_number)


# fnc that removes a contact.
def remove_contact(contacts, first_name, last_name):
    if has_contact:
        str = contacts[first_name + " " + last_name]
        del contacts[first_name + " " + last_name]
        return str
    else:
        return None