Define execfile, file, long, raw_input, xrange for Python 3

doc/pattern_tools/svgfig.py

@@ -29,6 +29,12 @@ try:
 except NameError:
     unicode = lambda s: str(s)
 
+try:
+    xrange          # Python 2
+except NameError:
+    xrange = range  # Python 3
+
+
 if re.search("windows", platform.system(), re.I):
     try:
         import _winreg
@@ -600,7 +606,7 @@ def template(fileName, svg, replaceme="REPLACEME"):
 
 def load(fileName):
     """Loads an SVG image from a file."""
-    return load_stream(file(fileName))
+    return load_stream(open(fileName))
 
 def load_stream(stream):
     """Loads an SVG image from a stream (can be a string or a file object)."""