Fixed python2/3 compatiblities

src/freecad_to_gazebo/__init__.py

@@ -1,12 +1,18 @@
-import os
-import platform
+import os, platform
+import distro
+
+FREECAD_PATH = ''
 
 # check os types to search for freecad libraries
 if 'linux' in platform.system().lower():
-    if 'ubuntu' in platform.dist()[0].lower():
+    dist = distro.linux_distribution(full_distribution_name=False)[0].lower()
+    # TODO: check freecad libs on different distros
+    if dist in ['ubuntu', 'debian', 'fedora', 'arch']:
         FREECAD_PATH = '/usr/lib/freecad'
-    elif 'fedora' in platform.dist()[0].lower():
+    else:
+        # fallback to default path
         FREECAD_PATH = '/usr/lib/freecad'
+    print(dist, FREECAD_PATH)
 elif 'nt' in platform.dist().lower():
     pass
     # TODO: Find freecad libs on windows
@@ -14,7 +20,7 @@ else:
     raise Exception("Platform not supported")
 
 # Extend sys.path to include freecad python libraries (including workbenches)
-os.sys.path.extend(os.path.join(FREECAD_PATH, d) for d in os.scandir(FREECAD_PATH))
+os.sys.path.extend(os.path.join(FREECAD_PATH, d) for d in os.listdir(FREECAD_PATH))
 
 from freecad_to_gazebo.mesh_exporter import export
 from freecad_to_gazebo.model import *