patch platform, escapes are raw strings

Author: timfel

graalpython/lib-python/3/platform.py

@@ -410,8 +410,8 @@ def _norm_version(version, build=''):
     return version
 
 _ver_output = re.compile(r'(?:([\w ]+) ([\w.]+) '
-                         '.*'
-                         '\[.* ([\d.]+)\])')
+                         r'.*'
+                         r'\[.* ([\d.]+)\])')
 
 # Examples of VER command output:
 #
@@ -1097,22 +1097,22 @@ def processor():
 
 _ironpython_sys_version_parser = re.compile(
     r'IronPython\s*'
-    '([\d\.]+)'
-    '(?: \(([\d\.]+)\))?'
-    ' on (.NET [\d\.]+)', re.ASCII)
+    r'([\d\.]+)'
+    r'(?: \(([\d\.]+)\))?'
+    r' 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.]+(?: \(\d+-bit\))?)\)'
+    r'\(IronPython\s*'
+    r'[\d.]+\s*'
+    r'\(([\d.]+)\) on ([\w.]+ [\d.]+(?: \(\d+-bit\))?)\)'
 )
 
 _pypy_sys_version_parser = re.compile(
     r'([\w.+]+)\s*'
-    '\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
-    '\[PyPy [^\]]+\]?')
+    r'\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
+    r'\[PyPy [^\]]+\]?')
 
 _sys_version_cache = {}