Python script to append an array(list)

[thresholdengineering]

I've been Googling for two days now and trying every suggestion, so far nothing is working. 

I've tried append, add, insert, in every syntax I can think of and nothing works.

I'm using Python script because there are things (working) that I couldn't figure out with MEL

I's starting out with a polymesh array with a length of 1 called 'transforms'

And a matrix array with 3 xforms called matrices

This is the current error 

# Error: AttributeError: file <maya console> line 1: 'unicode' object has no attribute 'insert'

And here is the code snippit

num = 1
    
print '-------------------------Starting Outer Loop\n'
for x in range(2):
    print '-------------------------Starting Inner Loop\n'
    print '===loop:' + str(x)

    for matrix in matrices:
        cmds.select(transforms)
        cmds.duplicate()
        cmds.xform( m = matrix )
        cmds.makeIdentity( apply=True )
        num += 1
        print 'Number of objects = ' + str(num)
        obj = cmds.ls(sl=True)
        transforms.insert(num, obj)
        print(matrix)

Surely someone has figured this out?

[thresholdengineering]

It just occurred to me I may need another include statement?

I only have one for maya commands

import maya.cmds as cmds
sel = cmds.ls(sl = True)
matrices =[]

[jmreinhart · Accepted solution]

That error means that your variable "transforms" is a string not an array/list. Check whichever line you are using to get that value.

[thresholdengineering]

I had declared transforms as an array then set it equal a single object basically getting rid of the array.

transforms = sel[len(sel)-1]

Where I should have done this (which works)

obj = sel[len(sel)-1]
transforms.insert(0, obj)

Now if I could just get the new meshes to stat where they are and reset the transformation this simple script would be done

Manually Modify>FreezeTransformations followed by Modify>ResetTransformations does exactly what I want

But the "ResetTransformations" doesn't even register in the script editor so I have no idea what comand to use in my script