With the Komadu MEL assistant for Maya, you can edit MEL scripts and export them in to Maya. With the Komadu shelf in Maya you can execute the script.
Tutorial 1 - Hello World
In this tutorial you will learn how to create a project
in Komadu and run the project script thru Maya.
1 We will start by creating
a project. Start Komadu. On the file menu select New project.
Komadu
will ask you where you want to save the project.
2 Type in the name and
select a location save the project. Type "helloWorld" and click save.
Next in
the create new procedure window you can type the name of the startup procedure.
Komadu automatically sets
the project name as the startup procedure name.
However the two names can
be different.
3 For the purpose of this
tutorial we will leave the startup name as is. Click the create button.
Now the
project nodes view should show the new procedure as in the following picture.

Now for
the coding.
4 Double click the "helloWorld.proc"
node in the project nodes view. This will open the node.
5 Type the following line
of code between the two curly brackets.
print "Hello World";
This
command will print the text "Hello World" in the Maya feedback line.
Now to test the script.
6 Press the F5 key on your
keyboard. This will save the project and export it to Maya.
7 After the deploy window
is closed, press F6. This will launch Maya.
8 In the Maya window make
sure the shelf is visible.
(you may make the shelf
visible by selecting Display > UI elements > Shelf).
9 in the Komadu tab of the
shelf click the execute komadu project button

10 You should see the result on the
Maya feedback line.

If the shelf is not visible you may also execute the
script by typing
source Komadu;
and pressing enter.

.