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# Write a file
with open("test.txt", "wt") as out_file:
    out_file.write("This Text is going to out file\nLook at it and see!")
 
# Read a file
with open("test.txt", "rt") as in_file:
    text = in_file.read()
 
print(text)

out_file.close()
in_file.close()


    

    




This Text is going to out file
Look at it and see!

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def print_numbers(numbers):
    print("Telephone Numbers:")
    for k, v in numbers.items():
        print("Name:", k, "\tNumber:", v)
    print()
 
def add_number(numbers, name, number):
    numbers[name] = number
 
def lookup_number(numbers, name):
    if name in numbers:
        return "The number is " + numbers[name]
    else:
        return name + " was not found"
 
def remove_number(numbers, name):
    if name in numbers:
        del numbers[name]
    else:
        print(name," was not found")
 
def load_numbers(numbers, filename):
    in_file = open(filename, "rt")
    while True:
        in_line = in_file.readline()
        if not in_line:
            break
        in_line = in_line[:-1]
        name, number = in_line.split(",")
        numbers[name] = number
    in_file.close()
 
def save_numbers(numbers, filename):
    out_file = open(filename, "wt")
    for k, v in numbers.items():
        out_file.write(k + "," + v + "\n")
    out_file.close()
 
def print_menu():
    print('1. Print Phone Numbers')
    print('2. Add a Phone Number')
    print('3. Remove a Phone Number')
    print('4. Lookup a Phone Number')
    print('5. Load numbers')
    print('6. Save numbers')
    print('7. Quit')
    print()
 
phone_list = {}
menu_choice = 0
print_menu()
while True:
    menu_choice = int(input("Type in a number (1-7): "))
    if menu_choice == 1:
        print_numbers(phone_list)
    elif menu_choice == 2:
        print("Add Name and Number")
        name = input("Name: ")
        phone = input("Number: ")
        add_number(phone_list, name, phone)
    elif menu_choice == 3:
        print("Remove Name and Number")
        name = input("Name: ")
        remove_number(phone_list, name)
    elif menu_choice == 4:
        print("Lookup Number")
        name = input("Name: ")
        print(lookup_number(phone_list, name))
    elif menu_choice == 5:
        filename = input("Filename to load: ")
        load_numbers(phone_list, filename)
    elif menu_choice == 6:
        filename = input("Filename to save: ")
        save_numbers(phone_list, filename)
    elif menu_choice == 7:
        break
    else:
        print_menu()
 
print("Goodbye")


    

    




1. Print Phone Numbers
2. Add a Phone Number
3. Remove a Phone Number
4. Lookup a Phone Number
5. Load numbers
6. Save numbers
7. Quit

Type in a number (1-7): 2

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