CODEWITHSUNDEEP
python
Benetha Thambi
Benetha Thambi

Reputation: 47

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

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))

Upvotes: 3

Views: 75

Answers (4)

Ryan
Ryan

Reputation: 2203

If you are open to using a 3rd party package, check out Google's Fire.

pip install fire

Modify your code as follows:

#!/usr/bin/env python
from fire import Fire

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))

if __name__ == '__main__':
  Fire(perfect)

Make sure your file is executable if on Mac or Linux (sorry, have no idea if you have to do that on Windows). Assuming your code is in a file named perfect:

chmod +x perfect

If the file is in your path, you should now be able to call it like this:

$ perfect 44
[1, 2, 4, 11, 22]
False

Upvotes: 0

R.A.Munna
R.A.Munna

Reputation: 1709

First go to the file directory and run the command from command line.

python -c "import modulename"

here modulename is your file_name.py

Upvotes: 0

alvits
alvits

Reputation: 6768

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

Upvotes: 1

user4880830
user4880830

Reputation:

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.

Upvotes: 4

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