directory_loop_example.py

import os

from os import path

def import_settings(file_path):
	with open(file_path) as gcode_file:
		all_lines  = gcode_file.readlines()

	# Filter to comments with equals
	comments = [comment for comment in all_lines if comment.startswith('; ') and len(comment.split('=')) == 2]

	# Extract settings from gcode comments into dictionary
	settings = {}

	for comment in comments:
		segments = [x.strip() for x in comment.replace(';', '').strip().split('=')]
		settings[segments[0]] = segments[1]

	return (settings, all_lines)

def import_mc_gcode(directory, csv_stream):
	# Loop over all files in gcode folder
	for file_name in os.listdir(directory):

		file_name = file_name.lower()

		if file_name.endswith(".gcode"):
			# Collect the name without extension
			segments = os.path.splitext(file_name)		
			name_without_extension = segments[0]
			print name_without_extension

			full_path = os.path.join(directory, file_name)

			# Extract settings
			(settings, all_lines) = import_settings(full_path)

			if len(settings) > 40:
				# Create a line in the CSV for this file
				csv_stream.write("%s,%s,%s,%s" % (file_name, settings['layerThickness'], settings['bottomInfillSpeed'], settings['airGapSpeed']))

			temp_line = [l for l in all_lines if l.startswith("M109")][0]

			segments = temp_line.split(' ')

			if len(segments) == 2:
				nozzle_temp = segments[1].replace('S', '')
			else:
				nozzle_temp = segments[2].replace('S', '')

			csv_stream.write(',%s\n' % nozzle_temp.strip())


some_directories = [os.path.expandvars(r'%localappdata%\MatterControl\data\temp\gcode'), os.path.expandvars('some_other_path')]

# Open output stream
csv_stream = open('c:/temp/some.csv', 'w')

# Write headers 
csv_stream.write('Name,Layer Thickness, Bottom Infill Speed, Air Gap Speed\n')

# Loop over directories, writing each to active csv stream
for directory in some_directories:

	# Kick off import on load
	import_mc_gcode(directory, csv_stream)

csv_stream.close()