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diff --git a/Assignment 3/packages/xlrd/timemachine.py b/Assignment 3/packages/xlrd/timemachine.py
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+++ b/Assignment 3/packages/xlrd/timemachine.py
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+##
+# <p>Copyright (c) 2006-2012 Stephen John Machin, Lingfo Pty Ltd</p>
+# <p>This module is part of the xlrd package, which is released under a BSD-style licence.</p>
+##
+
+# timemachine.py -- adaptation for single codebase.
+# Currently supported: 2.6 to 2.7, 3.2+
+# usage: from timemachine import *
+
+from __future__ import print_function
+import sys
+
+python_version = sys.version_info[:2] # e.g. version 2.6 -> (2, 6)
+
+if python_version >= (3, 0):
+    # Python 3
+    BYTES_LITERAL = lambda x: x.encode('latin1')
+    UNICODE_LITERAL = lambda x: x
+    BYTES_ORD = lambda byte: byte
+    from io import BytesIO as BYTES_IO
+    def fprintf(f, fmt, *vargs):
+        fmt = fmt.replace("%r", "%a")
+        if fmt.endswith('\n'):
+            print(fmt[:-1] % vargs, file=f)
+        else:
+            print(fmt % vargs, end=' ', file=f)        
+    EXCEL_TEXT_TYPES = (str, bytes, bytearray) # xlwt: isinstance(obj, EXCEL_TEXT_TYPES)
+    REPR = ascii
+    xrange = range
+    unicode = lambda b, enc: b.decode(enc)
+    ensure_unicode = lambda s: s
+    unichr = chr
+else:
+    # Python 2
+    BYTES_LITERAL = lambda x: x
+    UNICODE_LITERAL = lambda x: x.decode('latin1')
+    BYTES_ORD = ord
+    from cStringIO import StringIO as BYTES_IO
+    def fprintf(f, fmt, *vargs):
+        if fmt.endswith('\n'):
+            print(fmt[:-1] % vargs, file=f)
+        else:
+            print(fmt % vargs, end=' ', file=f)        
+    try:
+        EXCEL_TEXT_TYPES = basestring # xlwt: isinstance(obj, EXCEL_TEXT_TYPES)
+    except NameError:
+        EXCEL_TEXT_TYPES = (str, unicode)
+    REPR = repr
+    xrange = xrange
+    # following used only to overcome 2.x ElementTree gimmick which
+    # returns text as `str` if it's ascii, otherwise `unicode`
+    ensure_unicode = unicode # used only in xlsx.py