def load_extension(self, module_str):
"""Load an yap_ipython extension by its module name.
Returns the string "already loaded" if the extension is already loaded,
"no load function" if the module doesn't have a load_ipython_extension
function, or None if it succeeded.
"""
if module_str in self.loaded:
return "already loaded"
from yap_ipython.utils.syspathcontext import prepended_to_syspath
with self.shell.builtin_trap:
if module_str not in sys.modules:
with prepended_to_syspath(self.ipython_extension_dir):
mod = import_module(module_str)
if mod.__file__.startswith(self.ipython_extension_dir):
print((
"Loading extensions from {dir} is deprecated. "
"We recommend managing extensions like any "
"other Python packages, in site-packages.").format(
dir=compress_user(self.ipython_extension_dir)))
mod = sys.modules[module_str]
if self._call_load_ipython_extension(mod):
self.loaded.add(module_str)
else:
return "no load function"
def test_changing_py_file(self):
"""Traceback produced if the line where the error occurred is missing?
https://github.com/ipython/ipython/issues/1456
"""
with TemporaryDirectory() as td:
fname = os.path.join(td, "foo.py")
with open(fname, "w") as f:
f.write(file_1)
with prepended_to_syspath(td):
ip.run_cell("import foo")
with tt.AssertPrints("ZeroDivisionError"):
ip.run_cell("foo.f()")
# Make the file shorter, so the line of the error is missing.
with open(fname, "w") as f:
f.write(file_2)
# For some reason, this was failing on the *second* call after
# changing the file, so we call f() twice.
with tt.AssertNotPrints("Internal Python error", channel='stderr'):
with tt.AssertPrints("ZeroDivisionError"):
ip.run_cell("foo.f()")
with tt.AssertPrints("ZeroDivisionError"):
ip.run_cell("foo.f()")
def load_extension(self, module_str):
"""Load an yap_ipython extension by its module name.
Returns the string "already loaded" if the extension is already loaded,
"no load function" if the module doesn't have a load_ipython_extension
function, or None if it succeeded.
"""
if module_str in self.loaded:
return "already loaded"
from yap_ipython.utils.syspathcontext import prepended_to_syspath
with self.shell.builtin_trap:
if module_str not in sys.modules:
with prepended_to_syspath(self.ipython_extension_dir):
mod = import_module(module_str)
if mod.__file__.startswith(self.ipython_extension_dir):
print(("Loading extensions from {dir} is deprecated. "
"We recommend managing extensions like any "
"other Python packages, in site-packages.").format(
dir=compress_user(self.ipython_extension_dir)))
mod = sys.modules[module_str]
if self._call_load_ipython_extension(mod):
self.loaded.add(module_str)
else:
return "no load function"
def test_nonascii_path(self):
# Non-ascii directory name as well.
with TemporaryDirectory(suffix=u'é') as td:
fname = os.path.join(td, u"fooé.py")
with open(fname, "w") as f:
f.write(file_1)
with prepended_to_syspath(td):
ip.run_cell("import foo")
with tt.AssertPrints("ZeroDivisionError"):
ip.run_cell("foo.f()")
def test_iso8859_5(self):
with TemporaryDirectory() as td:
fname = os.path.join(td, 'dfghjkl.py')
with io.open(fname, 'w', encoding='iso-8859-5') as f:
f.write(iso_8859_5_file)
with prepended_to_syspath(td):
ip.run_cell("from dfghjkl import fail")
with tt.AssertPrints("ZeroDivisionError"):
with tt.AssertPrints(u'дбИЖ', suppress=False):
ip.run_cell('fail()')
def test_extension_builtins():
em = get_ipython().extension_manager
with TemporaryDirectory() as td:
ext3 = os.path.join(td, 'ext3.py')
with open(ext3, 'w') as f:
f.write(ext3_content)
assert 'ext3' not in em.loaded
with prepended_to_syspath(td):
# Load extension
with tt.AssertPrints("True"):
assert em.load_extension('ext3') is None
assert 'ext3' in em.loaded
def test_extension_builtins():
em = get_ipython().extension_manager
with TemporaryDirectory() as td:
ext3 = os.path.join(td, 'ext3.py')
with open(ext3, 'w') as f:
f.write(ext3_content)
assert 'ext3' not in em.loaded
with prepended_to_syspath(td):
# Load extension
with tt.AssertPrints("True"):
assert em.load_extension('ext3') is None
assert 'ext3' in em.loaded
def test_extension_loading():
em = get_ipython().extension_manager
with TemporaryDirectory() as td:
ext1 = os.path.join(td, 'ext1.py')
with open(ext1, 'w') as f:
f.write(ext1_content)
ext2 = os.path.join(td, 'ext2.py')
with open(ext2, 'w') as f:
f.write(ext2_content)
with prepended_to_syspath(td):
assert 'ext1' not in em.loaded
assert 'ext2' not in em.loaded
# Load extension
with tt.AssertPrints("Running ext1 load"):
assert em.load_extension('ext1') is None
assert 'ext1' in em.loaded
# Should refuse to load it again
with tt.AssertNotPrints("Running ext1 load"):
assert em.load_extension('ext1') == 'already loaded'
# Reload
with tt.AssertPrints("Running ext1 unload"):
with tt.AssertPrints("Running ext1 load", suppress=False):
em.reload_extension('ext1')
# Unload
with tt.AssertPrints("Running ext1 unload"):
assert em.unload_extension('ext1') is None
# Can't unload again
with tt.AssertNotPrints("Running ext1 unload"):
assert em.unload_extension('ext1') == 'not loaded'
assert em.unload_extension('ext2') == 'not loaded'
# Load extension 2
with tt.AssertPrints("Running ext2 load"):
assert em.load_extension('ext2') is None
# Can't unload this
assert em.unload_extension('ext2') == 'no unload function'
# But can reload it
with tt.AssertPrints("Running ext2 load"):
em.reload_extension('ext2')
def test_extension_loading():
em = get_ipython().extension_manager
with TemporaryDirectory() as td:
ext1 = os.path.join(td, 'ext1.py')
with open(ext1, 'w') as f:
f.write(ext1_content)
ext2 = os.path.join(td, 'ext2.py')
with open(ext2, 'w') as f:
f.write(ext2_content)
with prepended_to_syspath(td):
assert 'ext1' not in em.loaded
assert 'ext2' not in em.loaded
# Load extension
with tt.AssertPrints("Running ext1 load"):
assert em.load_extension('ext1') is None
assert 'ext1' in em.loaded
# Should refuse to load it again
with tt.AssertNotPrints("Running ext1 load"):
assert em.load_extension('ext1') == 'already loaded'
# Reload
with tt.AssertPrints("Running ext1 unload"):
with tt.AssertPrints("Running ext1 load", suppress=False):
em.reload_extension('ext1')
# Unload
with tt.AssertPrints("Running ext1 unload"):
assert em.unload_extension('ext1') is None
# Can't unload again
with tt.AssertNotPrints("Running ext1 unload"):
assert em.unload_extension('ext1') == 'not loaded'
assert em.unload_extension('ext2') == 'not loaded'
# Load extension 2
with tt.AssertPrints("Running ext2 load"):
assert em.load_extension('ext2') is None
# Can't unload this
assert em.unload_extension('ext2') == 'no unload function'
# But can reload it
with tt.AssertPrints("Running ext2 load"):
em.reload_extension('ext2')
def reload_extension(self, module_str):
"""Reload an yap_ipython extension by calling reload.
If the module has not been loaded before,
:meth:`InteractiveShell.load_extension` is called. Otherwise
:func:`reload` is called and then the :func:`load_ipython_extension`
function of the module, if it exists is called.
"""
from yap_ipython.utils.syspathcontext import prepended_to_syspath
if (module_str in self.loaded) and (module_str in sys.modules):
self.unload_extension(module_str)
mod = sys.modules[module_str]
with prepended_to_syspath(self.ipython_extension_dir):
reload(mod)
if self._call_load_ipython_extension(mod):
self.loaded.add(module_str)
else:
self.load_extension(module_str)
def reload_extension(self, module_str):
"""Reload an yap_ipython extension by calling reload.
If the module has not been loaded before,
:meth:`InteractiveShell.load_extension` is called. Otherwise
:func:`reload` is called and then the :func:`load_ipython_extension`
function of the module, if it exists is called.
"""
from yap_ipython.utils.syspathcontext import prepended_to_syspath
if (module_str in self.loaded) and (module_str in sys.modules):
self.unload_extension(module_str)
mod = sys.modules[module_str]
with prepended_to_syspath(self.ipython_extension_dir):
reload(mod)
if self._call_load_ipython_extension(mod):
self.loaded.add(module_str)
else:
self.load_extension(module_str)