<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def read_unicode(path, encoding, encoding_errors):
 """ Return the contents of a file as a unicode string. """

    try:
      f = open(path, 'rb')
      return make_unicode(f.read(), encoding, encoding_errors)
    finally:
      f.close()