Adding walkandscrub to delete pyc and pyo files recursively during installation.

inst/walkandscrub.py

+import os, sys
+DEBUG = 0
+if os.name in ('posix', 'nt', 'dos'):
+    EXCLUDED_NAMES=['..', '.']
+else:
+    EXCLUDED_NAMES=[]
+
+# extend EXCLUDED_NAMES here manually with filenames ala "asyncore.pyc" for
+# files that are only distributed in compiled format (.pyc, .pyo)
+# if necessary (not currently necessary in 2.3.1 AFAIK) - chrism
+
+def walkandscrub(path):
+    path = os.path.expandvars(os.path.expanduser(path))
+    print
+    print '-'*78
+    sys.stdout.write(
+        "Deleting '.pyc' and '.pyo' files recursively under %s... " % path
+        )
+    os.path.walk(path, scrub, [])
+    sys.stdout.write('done.\n')
+
+def scrub(list, dirname, filelist):
+    for name in filelist:
+        if name in EXCLUDED_NAMES:
+            continue
+        prefix, ext = os.path.splitext(name)
+        if ext == '.pyo' or ext == '.pyc':
+            full = os.path.join(dirname, name)
+            os.unlink(full)
+            if DEBUG: print full
+            
+if __name__ == '__main__':
+    DEBUG = 1
+    walkandscrub(os.getcwd())