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How do I repeat my program based on user's input?

Petrov

I have created a python program for basic unit conversion.

This is what that I have created:

print("
  -: A Simple Application for Convert Liter(L) to Cubic-centimeter(cc/cmu00B3) :-")
print('   ',  ("u207B" * 71))

value = input("
     Enter the value (in L): ");

if '.' in value:
    try:
        value = float(value)
        print('
     ==>', value,'L is equal to', value * 1000, 'cc/cmu00B3.')
        input("

     Thanks for use me :)
     Hope it helped you!
     Press 'ENTER' key to exit........")
    except:
        print('
', "
  Something went wrong! :(")
        print('
', "    Exit and Try again! [make sure you'r entering a Integer value or Float Value]")
        input("

     Press 'ENTER' key to exit........")
else:
    try:
        value = int(value)
        print('
     ==>', value,'L is equal to', value * 1000, 'cc/cmu00B3.')
        input("

     Thanks for use me :)
     Hope it helped you!
     Press 'ENTER' key to exit........")
    except:
        print('
', "    Something went wrong! :(")
        print('
', "    Exit and Try again! [make sure you'r entering a Integer Value or Float Value]")
        input("

     Press 'ENTER' key to exit........")

Now I want to repeat my program again based on user input.

Basically what I'm trying to do:

after showing answer or showing this print(' ', " Something went wrong! :("); it will asks user for repeat this. If value for yes = y OR Y, It will repeat the program from the beginning.

If value for no = n OR N, It will stop after showing output of this input(" Thanks for use me :) Press 'ENTER' key to exit........").

If value is not equal to 'n', 'N' or 'y', 'Y' , It will show Invalid Input!

And above those two condition (1) and (2) will be inside in both try and except statement.

Anyone help please??