Modules and Packages

A module in PERL is a collection of functions. A package is much larger.

In Python, a package

http://stackoverflow.com/questions/3733969/old-pl-modules-versus-new-pm-modules

PERL modules look like -

use Useful;
open(IN,”gene”);
$_=<IN>;

$x=Useful::translate($_);

print $x,”\n”;

Python modules look like -

import Useful

Splitting Code into Multiple Files

We will separate our code into two files and see how they run.
You cannot do this in the sandbox.

In file other.py, type -

print “code in other file”

In main.py -

import other

print “code in main file”

Both files need to be in the same directory. When you run main.py, it will automatically
include the code from ‘other.py’ and run it.

print “code in main file”

import other

Import from external file happens only once.

The main purpose of import is to separate function definitions in a separate file.