With the full qualification that there isn’t really a good way to benchmark the
two against each other within Nuke, I think it’s pretty safe to assume that TCL
will be faster in the majority of cases. Since Python expressions are called
through TCL, at the very least, they will suffer a consistent (if likely
miniscule) overhead no matter what. Additionally, the double-edged sword of
Python is that, while it’s typically easier for beginners to pick up, it also
makes it much easier to write inefficient code than TCL does, so unless you’re
a strong/smart Python programmer, you will likely introduce more avoidable
overhead manually.
The general rule I tend to try and adhere to (and would recommend) is, if
something can be done in TCL without exceeding a certain (admittedly
subjective) threshold of complexity, I’ll use that over Python.
The function you’ve listed can basically be written like so as a TCL expression:
[lindex [split [lindex [split [file tail [value parent.input0.file]] _] 0] .] 0]
-Nathan
From: Luca Fiorentini
Sent: Friday, September 21, 2012 5:21 AM
To: Nuke Python discussion
Subject: [Nuke-python] python and tcl
Hi!
Is tcl faster than python inside nuke when you have to set knobs on a lot of
different nodes?
I had this impression and I was trying to convert all the simple expressions
inside my gizmos but I would like to be sure.
Also, is it possible to translate something like this
def saText():
try:
file = nuke.thisGroup().input(0).knob('file').value()
text = os.path.split(file)[1]
text = text.split('_')[0]
text = text.split('.')[0]
return text
except:
return 'Bad naming convention/location'
to tcl or I have to use python?
Thanks in advance!
--
Luca Fiorentini - 3D Lighting Artist
My Showreel - My blog - My Flickr
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