def my_func():
ip0 = get_ipython0()
if ip0 is None:
return func()
# We have a real ipython running...
user_ns = ip0.IP.user_ns
user_global_ns = ip0.IP.user_global_ns
# Previously the isolation was attempted with a deep copy of the user
# dicts, but we found cases where this didn't work correctly. I'm not
# quite sure why, but basically it did damage the user namespace, such
# that later tests stopped working correctly. Instead we use a simpler
# approach, just computing the list of added keys to the namespace and
# eliminating those afterwards. Existing keys that may have been
# modified remain modified. So far this has proven to be robust.
# Compute set of old local/global keys
old_locals = set(user_ns.keys())
old_globals = set(user_global_ns.keys())
try:
out = func()
finally:
# Find new keys, and if any, remove them
new_locals = set(user_ns.keys()) - old_locals
new_globals = set(user_global_ns.keys()) - old_globals
for k in new_locals:
del user_ns[k]
for k in new_globals:
del user_global_ns[k]
# Undo the hack at creation of PrefilterFrontEnd
from IPython import iplib
iplib.InteractiveShell.isthreaded = False
return out
def my_func(*args, **kwargs):
ipython0 = get_ipython0().IP
user_ns = deepcopy(ipython0.user_ns)
global_ns = deepcopy(ipython0.global_ns)
try:
func(*args, **kwargs)
finally:
ipython0.user_ns = user_ns
ipython0.global_ns = global_ns
def __init__(self):
ipython0 = get_ipython0().IP
self.out = StringIO()
PrefilterFrontEnd.__init__(self, ipython0=ipython0)
# Clean up the namespace for isolation between tests
user_ns = self.ipython0.user_ns
# We need to keep references to things so that they don't
# get garbage collected (this stinks).
self.shadow_ns = dict()
for i in self.ipython0.magic_who_ls():
self.shadow_ns[i] = user_ns.pop(i)
# Some more code for isolation (yeah, crazy)
self._on_enter()
self.out.flush()
self.out.reset()
self.out.truncate()