1 files changed, 36 insertions, 39 deletions

diff --git a/Tools/scripts/checkpyc.py b/Tools/scripts/checkpyc.py
index bbaa3d1..8af7672 100755
--- a/Tools/scripts/checkpyc.py
+++ b/Tools/scripts/checkpyc.py
@@ -1,69 +1,66 @@
-#! /usr/bin/env python3
+#! /usr/bin/env python
 # Check that all ".pyc" files exist and are up-to-date
 # Uses module 'os'
 
 import sys
 import os
 from stat import ST_MTIME
-import importlib.util
-
-# PEP 3147 compatibility (PYC Repository Directories)
-cache_from_source = (importlib.util.cache_from_source if sys.implementation.cache_tag
-                     else lambda path: path + 'c')
-
+import imp
 
 def main():
-    if len(sys.argv) > 1:
-        verbose = (sys.argv[1] == '-v')
-        silent = (sys.argv[1] == '-s')
-    else:
-        verbose = silent = False
-    MAGIC = importlib.util.MAGIC_NUMBER
+    silent = 0
+    verbose = 0
+    if sys.argv[1:]:
+        if sys.argv[1] == '-v':
+            verbose = 1
+        elif sys.argv[1] == '-s':
+            silent = 1
+    MAGIC = imp.get_magic()
     if not silent:
-        print('Using MAGIC word', repr(MAGIC))
+        print 'Using MAGIC word', repr(MAGIC)
     for dirname in sys.path:
         try:
             names = os.listdir(dirname)
-        except OSError:
-            print('Cannot list directory', repr(dirname))
+        except os.error:
+            print 'Cannot list directory', repr(dirname)
             continue
         if not silent:
-            print('Checking ', repr(dirname), '...')
-        for name in sorted(names):
-            if name.endswith('.py'):
+            print 'Checking ', repr(dirname), '...'
+        names.sort()
+        for name in names:
+            if name[-3:] == '.py':
                 name = os.path.join(dirname, name)
                 try:
                     st = os.stat(name)
-                except OSError:
-                    print('Cannot stat', repr(name))
+                except os.error:
+                    print 'Cannot stat', repr(name)
                     continue
                 if verbose:
-                    print('Check', repr(name), '...')
-                name_c = cache_from_source(name)
+                    print 'Check', repr(name), '...'
+                name_c = name + 'c'
                 try:
-                    with open(name_c, 'rb') as f:
-                        magic_str = f.read(4)
-                        mtime_str = f.read(4)
+                    f = open(name_c, 'r')
                 except IOError:
-                    print('Cannot open', repr(name_c))
+                    print 'Cannot open', repr(name_c)
                     continue
-                if magic_str != MAGIC:
-                    print('Bad MAGIC word in ".pyc" file', end=' ')
-                    print(repr(name_c))
+                magic_str = f.read(4)
+                mtime_str = f.read(4)
+                f.close()
+                if magic_str <> MAGIC:
+                    print 'Bad MAGIC word in ".pyc" file',
+                    print repr(name_c)
                     continue
                 mtime = get_long(mtime_str)
-                if mtime in {0, -1}:
-                    print('Bad ".pyc" file', repr(name_c))
-                elif mtime != st[ST_MTIME]:
-                    print('Out-of-date ".pyc" file', end=' ')
-                    print(repr(name_c))
-
+                if mtime == 0 or mtime == -1:
+                    print 'Bad ".pyc" file', repr(name_c)
+                elif mtime <> st[ST_MTIME]:
+                    print 'Out-of-date ".pyc" file',
+                    print repr(name_c)
 
 def get_long(s):
-    if len(s) != 4:
+    if len(s) <> 4:
         return -1
-    return s[0] + (s[1] << 8) + (s[2] << 16) + (s[3] << 24)
-
+    return ord(s[0]) + (ord(s[1])<<8) + (ord(s[2])<<16) + (ord(s[3])<<24)
 
 if __name__ == '__main__':
     main()