class DocTest():

def __init__(self, examples, globs, name, filename, lineno, docstring):

    """

        Create a new DocTest containing the given examples.  The

        DocTest's globals are initialized with a copy of `globs`.

        """

    assert not isinstance(examples, basestring), \

           "DocTest no longer accepts str; use DocTestParser instead"

    self.examples = examples

    self.docstring = docstring

    self.globs = globs.copy()

    self.name = name

    self.filename = filename

    self.lineno = lineno

def __cmp__(self, other):

    if not isinstance(other, DocTest):

        return -1

    return cmp((self.name, self.filename, self.lineno, id(self)),

               (other.name, other.filename, other.lineno, id(other)))

def __repr__(self):

    if len(self.examples) == 0:

        examples = 'no examples'

    elif len(self.examples) == 1:

        examples = '1 example'

    else:

        examples = '%d examples' % len(self.examples)

    return ('<DocTest %s from %s:%s (%s)>' %

            (self.name, self.filename, self.lineno, examples))