IPython/testing/skipdoctest.py

"""This decorator marks that a doctest should be skipped.

The IPython.testing.decorators module triggers various extra imports, including
numpy and sympy if they're present. Since this decorator is used in core parts
of IPython, it's in a separate module so that running IPython doesn't trigger
those imports."""

def skip_doctest(f):
    """Decorator - mark a function or method for skipping its doctest.

    This decorator allows you to mark a function whose docstring you wish to
    omit from testing, while preserving the docstring for introspection, help,
    etc."""
    f.skip_doctest = True
    return f