Struggling for the past hour to define function and call it back

[godlyredwall]

Ok, so for the past hour i've been struggling to define a function and call it back, i dont know what im doing wrong i've done exactly how it says on google, i'm a beginner at Python, please show me how to do it.
Here is my code:

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import sys def operations():   calculation_input = input(''' Pentru adunare apasati + Pentru scadere apasati - Pentru inmultire apasati * Pentru inmultire apasati / Pentru inchiderea programului apasati 0 ''') if calculation_input == '0':     sys.exit(0) n1 = int(input('Introduce primul numar ')) n2 = int(input('Introduce al doilea numar ')) if calculation_input == '+':     print('{} + {} = '.format(n1,n2))     print(n1 + n2) elif calculation_input == '-':     print('{} - {} = '.format(n1,n2))     print(n1 - n2)   elif calculation_input == '*':     print('{} * {} = '.format(n1,n2))     print(n1 * n2) elif calculation_input == '/':     print('{} / {} = '.format(n1,n2))     print(n1 / n2) else :     print('Trebuie sa pui un simbol compatibil')     sys.exit(0)   calculation_again = input('''vreti sa restartati programul? da - se restarteaza nu - nu se restarteaza ''') if calculation_again == 'da':     operations() elif calculation_again == 'nu':     sys.exit(0)

metulburr write Oct-29-2020, 02:16 PM:
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[DPaul]

Are you wondering why nothing happens ?
Or what is the error message ?
Paul

[deanhystad]

Indentation is important in Python. The body of a function must be indented from the declaration, and the body of the function ends when indentation is less than or equal to the declaration

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def declaration(arguments):    body = arguments / 2    return body   not_part_of_function = declaration(4)