feat(samples): python 3

Author: gierschv

spec/code_samples/Python/me/get.py

@@ -10,4 +10,4 @@
 try:
     pprint(flat_api.AccountApi(flat_api_client).get_authenticated_user())
 except ApiException as e:
-    print e
+    print(e)

spec/code_samples/Python/scores/post.py

@@ -1,5 +1,7 @@
 from pprint import pprint
-import os, urllib2
+import os
+from urllib.request import urlopen
+from urllib.error import HTTPError
 
 import flat_api
 from flat_api.rest import ApiException
@@ -12,7 +14,7 @@
 
 try:
     # Download a MusicXML "Hello World"
-    hello_world = urllib2.urlopen(SCORE_TO_IMPORT).read()
+    hello_world = urlopen(SCORE_TO_IMPORT).read().decode('utf-8')
 
     # The new score meta, including the MusicXML file as `data`
     new_score = flat_api.ScoreCreation(
@@ -23,5 +25,5 @@
 
     # Create the document and print the meta returned by the API
     pprint(flat_api.ScoreApi(flat_api_client).create_score(new_score))
-except (ApiException, urllib2.HTTPError) as e:
-    print e
+except (ApiException, HTTPError) as e:
+    print(e)