LAE

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Originally posted by: sozdemir

Hello,

Does anyone have a simple file showing how to use Python Node? I am looking for something really basic.

Thank you.

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Originally posted by: the1don

Did you ever get an example of how to use the Python Node? I am trying to convert text to title case (first letter capital the rest lower) and Lavastorm does not provide that I figured it shoudl be easy to use the Python node and title() but still trying to figure it out.

Thank you

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Originally posted by: aop

Check C:\Users\Public\Documents\Lavastorm BRAIN\Examples for Python examples. Could be different directory in LAE 6 but the project file is ExamplePythonNodes.brg.

Also search for Python Node Getting Started.pdf in LAE installation directory.

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Originally posted by: gmullin

Very simple example below. Just takes an input pin, reads it and prints it out again. Hopefully will help to get you started.

			
				node:Python

bretype:core::Python

editor:sortkey=561387df4af457f7

input:5613885d5c905f77/in1=Static_Data.40fe6c55598828e5

output:561387f030076ca2/out1=

prop:Python2Implementation=<<EOX

import braininfo


def setup(brainNodeControlObj, BrainNodeClass):

	''' Must return a class that inherits from BrainNodeClass. '''

	class BrainNode(BrainNodeClass):

		def initialize(self):

			''' Called at node initialization, before first pump.'''

			super(BrainNode, self).initialize()


		def finalize(self, val):

			''' Called at node end, after last pump call. '''

			super(BrainNode, self).finalize(val)


		def pump(self, quant):

			''' Will continue to be called until False is returned.


			Only a small amount of work should be done in pump without checking

			quant.permitsRunning.  When that returns False, return from pump

			with a True value to be called again, a False value when finished.'''

			while quant.permitsRunning(self):

				# your code here

				#setup metadata

				metadata = self.newMetadata()

				om = self.newMetadata()


				#create output pins

				om.append("Status", "string")

				om.append("Input", "string")

				self.outputs[0].metadata = om

				outputRec = self.outputs[0].newRecord()


				#read input pins

				inputRec = self.inputs[0].read()


				# Check that we haven't passed the last record

				if inputRec is None:

					return False


				#create a record to output in output pin

				outputRec = self.outputs[0].newRecord()

				outputRec[0] = inputRec["second_input"]	#can specify the name of the field or use index

				outputRec[1] = inputRec[0]		#using index

				self.outputs[0].write(outputRec)


				# when complete

				return False

			# finished your quantum, you want pump called again

			return True


	# If you implement your logic here, you don't need code below. If you want

	# to inherit, and add more logic at next level, uncomment below code


	# py3File = brainNodeControlObj.properties.getString("ls.brain  .node.BrainPython.python3ImplementationFile")

	# braininfo.loadModule(py3File, "py3", brainNodeControlObj)

	# import py3

	# BrainNodeImpl = py3.setup(brainNodeControlObj, BrainNode)

	# return BrainNodeImpl


	return BrainNode

EOX

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end:Python


node:Static_Data

bretype:core::Static Data

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output:@40fe6c55598828e5/=

prop:StaticData=<<EOX

single_input,second_input

hello,this

EOX

editor:XY=210,140

end:Static_Data