python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Tools/scripts/byteyears.py

@@ -0,0 +1,61 @@
+#! /usr/bin/env python3
+
+# Print the product of age and size of each file, in suitable units.
+#
+# Usage: byteyears [ -a | -m | -c ] file ...
+#
+# Options -[amc] select atime, mtime (default) or ctime as age.
+
+import sys, os, time
+from stat import *
+
+def main():
+
+    # Use lstat() to stat files if it exists, else stat()
+    try:
+        statfunc = os.lstat
+    except AttributeError:
+        statfunc = os.stat
+
+    # Parse options
+    if sys.argv[1] == '-m':
+        itime = ST_MTIME
+        del sys.argv[1]
+    elif sys.argv[1] == '-c':
+        itime = ST_CTIME
+        del sys.argv[1]
+    elif sys.argv[1] == '-a':
+        itime = ST_CTIME
+        del sys.argv[1]
+    else:
+        itime = ST_MTIME
+
+    secs_per_year = 365.0 * 24.0 * 3600.0   # Scale factor
+    now = time.time()                       # Current time, for age computations
+    status = 0                              # Exit status, set to 1 on errors
+
+    # Compute max file name length
+    maxlen = 1
+    for filename in sys.argv[1:]:
+        maxlen = max(maxlen, len(filename))
+
+    # Process each argument in turn
+    for filename in sys.argv[1:]:
+        try:
+            st = statfunc(filename)
+        except OSError as msg:
+            sys.stderr.write("can't stat %r: %r\n" % (filename, msg))
+            status = 1
+            st = ()
+        if st:
+            anytime = st[itime]
+            size = st[ST_SIZE]
+            age = now - anytime
+            byteyears = float(size) * float(age) / secs_per_year
+            print(filename.ljust(maxlen), end=' ')
+            print(repr(int(byteyears)).rjust(8))
+
+    sys.exit(status)
+
+if __name__ == '__main__':
+    main()