#8964: fix platform._sys_version to handle IronPython 2.6+.

1 files changed, 16 insertions, 3 deletions

diff --git a/Lib/platform.py b/Lib/platform.py
index d5ebf25..ec5df85 100755
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -1248,6 +1248,14 @@ _ironpython_sys_version_parser = re.compile(
     '(?: \(([\d\.]+)\))?'
     ' on (.NET [\d\.]+)', re.ASCII)
 
+# IronPython covering 2.6 and 2.7
+_ironpython26_sys_version_parser = re.compile(
+    r'([\d.]+)\s*'
+    '\(IronPython\s*'
+    '[\d.]+\s*'
+    '\(([\d.]+)\) on ([\w.]+ [\d.]+(?: \(\d+-bit\))?)\)'
+)
+
 _pypy_sys_version_parser = re.compile(
     r'([\w.+]+)\s*'
     '\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
@@ -1285,19 +1293,24 @@ def _sys_version(sys_version=None):
         return result
 
     # Parse it
-    if sys_version[:10] == 'IronPython':
+    if 'IronPython' in sys_version:
         # IronPython
         name = 'IronPython'
-        match = _ironpython_sys_version_parser.match(sys_version)
+        if sys_version.startswith('IronPython'):
+            match = _ironpython_sys_version_parser.match(sys_version)
+        else:
+            match = _ironpython26_sys_version_parser.match(sys_version)
+
         if match is None:
             raise ValueError(
                 'failed to parse IronPython sys.version: %s' %
                 repr(sys_version))
+
         version, alt_version, compiler = match.groups()
         buildno = ''
         builddate = ''
 
-    elif sys.platform[:4] == 'java':
+    elif sys.platform.startswith('java'):
         # Jython
         name = 'Jython'
         match = _sys_version_parser.match(sys_version)