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the __future__ is now.

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test_deepreload.py
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# -*- coding: utf-8 -*-
"""Test suite for the deepreload module."""
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import os
import nose.tools as nt
from IPython.testing import decorators as dec
from IPython.utils.py3compat import builtin_mod_name, PY3
from IPython.utils.syspathcontext import prepended_to_syspath
from IPython.utils.tempdir import TemporaryDirectory
from IPython.lib.deepreload import reload as dreload
#-----------------------------------------------------------------------------
# Test functions begin
#-----------------------------------------------------------------------------
@dec.skipif_not_numpy
def test_deepreload_numpy():
"Test that NumPy can be deep reloaded."
import numpy
# TODO: Find a way to exclude all standard library modules from reloading.
exclude = [
# Standard exclusions:
'sys', 'os.path', builtin_mod_name, '__main__',
# Test-related exclusions:
'unittest', 'UserDict', '_collections_abc', 'tokenize',
'collections', 'collections.abc',
'importlib', 'importlib.machinery', '_imp',
'importlib._bootstrap', 'importlib._bootstrap_external',
'_frozen_importlib', '_frozen_importlib_external',
]
dreload(numpy, exclude=exclude)
def test_deepreload():
"Test that dreload does deep reloads and skips excluded modules."
with TemporaryDirectory() as tmpdir:
with prepended_to_syspath(tmpdir):
with open(os.path.join(tmpdir, 'A.py'), 'w') as f:
f.write("class Object(object):\n pass\n")
with open(os.path.join(tmpdir, 'B.py'), 'w') as f:
f.write("import A\n")
import A
import B
# Test that A is not reloaded.
obj = A.Object()
dreload(B, exclude=['A'])
nt.assert_true(isinstance(obj, A.Object))
# Test that A is reloaded.
obj = A.Object()
dreload(B)
nt.assert_false(isinstance(obj, A.Object))