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Execute Python 2 Code via Python 3

Question asked by crafty762 Champion on Dec 26, 2019
Latest reply on Jan 2, 2020 by curtvprice

I am trying to wrap some Python 2 code into Python 3 but having trouble getting the process to work correctly.  From ArcGIS Pro, I'm running a custom GP tool with the following code as its script.  My goal is to run my Python 2 code (stored in a separate script) against a series of MXDs in order to list the data source for each layer or table.  In my case, doing it this way yields no results.  The code runs in about 2 seconds and then terminates.  Any ideas?  



import subprocess, os, winreg, sys, arcpy


   arcpy.AddMessage("Finding Python 2.7 installation directory...")
   hKey = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE,    "SOFTWARE\\WOW6432Node\\Python\\PythonCore\\2.7\\InstallPath")
   result = winreg.QueryValueEx(hKey, "")[0]
   arcpy.AddWarning("Python 2.7 installation directory was not found.")
   arcpy.AddError("Script failed.")


if os.path.exists(result + "\\python.exe"):
   arcpy.AddMessage("Launching Python 2.7 executable...")
   CREATE_NO_WINDOW = 0x8000000
   process = subprocess.Popen([result + "\\python.exe", "C:\\temp\\python\\"],    stdout=subprocess.PIPE, stderr=subprocess.PIPE, creationflags = CREATE_NO_WINDOW, shell=True, stdin=None)
   stdout, stderr = process.communicate()




import arcpy, glob


rootDirectory = 'C:/temp'
fileExtension = '.mxd'

def main():
   for f in glob.glob(rootDirectory + '/*' + fileExtension):
      mxd = arcpy.mapping.MapDocument(f)
      for df in arcpy.mapping.ListDataFrames(mxd, ''):
         for lyr in arcpy.mapping.ListLayers(mxd, '', df):
            if not lyr.isGroupLayer:
               if lyr.isRasterLayer:
                  print "Raster Layer, {}".format(lyr)
               elif lyr.isFeatureLayer:
                  print "Feature Layer, {}, {}".format(lyr, lyr.serviceProperties)
                  print "Layer, {}".format(lyr)
         for tbl in arcpy.mapping.ListTableViews(mxd, '', df):
            print "Table, {}".format(tbl.dataSource)

if __name__ == '__main__':