how can i use a function directly in commandline in python?

Question

for example: my command line after execution of a program has to be like this:

perfect(44) #using the defined function in the output screen.(44) or any other number

and the output should be:

false

this the code i have tried but in this i cannot use the funcion in the command line.

def factors(n):
    factorlist = []
    for i in range(1,n):
        if n%i == 0:
            factorlist = factorlist + [i]
    print factorlist
    return factorlist

def perfect(n):
    factorlist = factors(n)
    if sum(factorlist) == n:
        return True
    else :
        return False

n = int(raw_input())
print(perfect(n))

Answer 1

Go to the path where you have the .py file located. Start the python interpreter in interactive mode by the following command:

python -i filename.py

By doing this, you should be able to access all functions inside your filename.py file.

Answer 2

You can append the following lines to your python script to call a function when the script is loaded.

if __name__ == '__main__':
    print(perfect(int(sys.argv[1])))

You can then call it like:

python myscript.py 44