Appending Existing Item/s in FBList via Python

[ronel_dejesus]

My mistake. I only solved my second problem from the previous post.

I'm trying to do a Python script where I want to append an Item from an FBList to another FBList. What I want to happen is, I don't want to prevent appending the same Item in the other FBList once it is already appended. I know how if/else condition works, I just don't know yet how to properly apply it in this case. Here's the sample BTW.

def addHeadCall(control, event):

   addOpt = optList.Items[optList.ItemIndex]

   headList.Items.append(addOpt)

   print addOpt, "has been added to Head"

I'm sorry,  I'm still completely new to Python especially for Motionbuilder. I can only apply a few of my knowledge for MEL scripting.

Again, thanks in advance for the help.

[ronel_dejesus]

Solved it on my own. Thanks anyways

def addHeadCall(control, event):
    s = len(headScroll.Items)
    addOpt = optList.Items[optList.ItemIndex]
    p = (addOpt + " has been added to Head Index") 
    if  s == 0:
        headScroll.Items.append(addOpt)
        print p
    elif 0 < s < 5:
        e = 0 #count for existing item
        for item in headScroll.Items:
            if addOpt == item:
                e = e + 1
        if e == 0:
            headScroll.Items.append(addOpt)   
            print p

 But if there's an alternative way, please inform me. Thanks in advance

[vdebaie · Accepted solution]

would something like this work?

def addHeadCall(control, event):
    addOpt = optList.Items[optList.ItemIndex]
    if addOpt not in headScroll.Items:
        headScroll.Items.append(addOpt)
        print (addOpt + " has been added to Head Index")

[ronel_dejesus]

Woah! This is way lot simpler and shorter. Thanks, man. I didn't know there's a "not in".