using functions to display numbers in a list

Question

I have a list of numbers and I have to use a function to display them in celsius, they are in fahrenheit now.

nums = [30,34,40,36,36,28,29,32,34,44,36,35,28,33,         


        

Answer 1

The simplest way would be to use a for loop to iterate over the list and printing each result:

#!/usr/bin/env python

# def farentoCel(x): ...
# ...

if __name__ == '__main__':
    import sys

    for each_num in sys.argv[1:]:
        print farentoCel(int(each_num))

As others have said you can replace this explicit loop with a list comprehension (expression), or even a generator comprehension (in newer versions of Python).

In this case I'm showing a very simple skeleton for you to use for testing simple functions. The if _ name _ == '_ main _': suite is a Python convention used to separate your function, class, and other definitions from the run-time of your code. This can be used to structure your code so that it can be re-used in (imported into) other code while also exposing some functionality in a command line utility (wrapper) or providing a default interface (perhaps a GUI).

In the fairly common case where your module doesn't have simply accessible utility (where it's only useful when incorporated into other code) then you can use the '_ main _' suite to contain unit test cases.