def km_from_string(s = PMX_IPYTHON_CONNECTION):
"""create kernel manager from IPKernelApp string
such as '--shell=47378 --iopub=39859 --stdin=36778 --hb=52668' for IPython 0.11
or just 'kernel-12345.json' for IPython 0.12
"""
from os.path import join as pjoin
from IPython.zmq.blockingkernelmanager import BlockingKernelManager
from IPython.config.loader import KeyValueConfigLoader
from IPython.zmq.kernelapp import kernel_aliases
s = s.replace('--existing', '')
if 'connection_file' in BlockingKernelManager.class_trait_names():
from IPython.lib.kernel import find_connection_file
# 0.12 uses files instead of a collection of ports
# include default IPython search path
# filefind also allows for absolute paths, in which case the search
# is ignored
try:
# XXX: the following approach will be brittle, depending on what
# connection strings will end up looking like in the future, and
# whether or not they are allowed to have spaces. I'll have to sync
# up with the IPython team to address these issues -pi
if '--profile' in s:
k,p = s.split('--profile')
k = k.lstrip().rstrip() # kernel part of the string
p = p.lstrip().rstrip() # profile part of the string
fullpath = find_connection_file(k,p)
else:
fullpath = find_connection_file(s.lstrip().rstrip())
except IOError,e:
print ":IPython " + s + " failed", "Info"
print "^-- failed '" + s + "' not found", "Error"
return
km = BlockingKernelManager(connection_file = fullpath)
km.load_connection_file()
def init_connection_file(self):
"""find the connection file, and load the info if found.
The current working directory and the current profile's security
directory will be searched for the file if it is not given by
absolute path.
When attempting to connect to an existing kernel and the `--existing`
argument does not match an existing file, it will be interpreted as a
fileglob, and the matching file in the current profile's security dir
with the latest access time will be used.
After this method is called, self.connection_file contains the *full path*
to the connection file, never just its name.
"""
if self.existing:
try:
cf = find_connection_file(self.existing)
except Exception:
self.log.critical(
"Could not find existing kernel connection file %s",
self.existing)
self.exit(1)
self.log.info("Connecting to existing kernel: %s" % cf)
self.connection_file = cf
else:
# not existing, check if we are going to write the file
# and ensure that self.connection_file is a full path, not just the shortname
try:
cf = find_connection_file(self.connection_file)
except Exception:
# file might not exist
if self.connection_file == os.path.basename(
self.connection_file):
# just shortname, put it in security dir
cf = os.path.join(self.profile_dir.security_dir,
self.connection_file)
else:
cf = self.connection_file
self.connection_file = cf
# should load_connection_file only be used for existing?
# as it is now, this allows reusing ports if an existing
# file is requested
try:
self.load_connection_file()
except Exception:
self.log.error("Failed to load connection file: %r",
self.connection_file,
exc_info=True)
self.exit(1)
def create_client(name):
if name.endswith('.json'):
# Received an existing kernel we should connect to.
cf = find_connection_file(name)
else:
cf = find_connection_file('emacs-' + name)
c = client.BlockingKernelClient(connection_file=cf)
c.load_connection_file()
c.start_channels()
chans = [('io', c.get_iopub_msg), ('shell', c.get_shell_msg), ('stdin', c.get_stdin_msg)]
for name, ch in chans:
t = threading.Thread(target=msg_router, args=(name, ch))
t.start()
return c
def create_client(name):
if name.endswith('.json'):
# Received an existing kernel we should connect to.
cf = find_connection_file(name)
else:
cf = find_connection_file('emacs-' + name)
c = client.BlockingKernelClient(connection_file=cf)
c.load_connection_file()
c.start_channels()
chans = [('io', c.get_iopub_msg), ('shell', c.get_shell_msg), ('stdin', c.get_stdin_msg)]
for name, ch in chans:
t = threading.Thread(target=msg_router, args=(name, ch))
t.start()
return c
def init_connection_file(self):
"""find the connection file, and load the info if found.
The current working directory and the current profile's security
directory will be searched for the file if it is not given by
absolute path.
When attempting to connect to an existing kernel and the `--existing`
argument does not match an existing file, it will be interpreted as a
fileglob, and the matching file in the current profile's security dir
with the latest access time will be used.
"""
if self.existing:
try:
cf = find_connection_file(self.existing)
except Exception:
self.log.critical(
"Could not find existing kernel connection file %s",
self.existing)
self.exit(1)
self.log.info("Connecting to existing kernel: %s" % cf)
self.connection_file = cf
# should load_connection_file only be used for existing?
# as it is now, this allows reusing ports if an existing
# file is requested
try:
self.load_connection_file()
except Exception:
self.log.error("Failed to load connection file: %r",
self.connection_file,
exc_info=True)
self.exit(1)
def get_client(cf):
connection_file = find_connection_file(cf)
km = KernelManager(connection_file=connection_file)
km.load_connection_file()
client = km.client()
return KernelClient(client)
def init_connection_file(self):
"""find the connection file, and load the info if found.
The current working directory and the current profile's security
directory will be searched for the file if it is not given by
absolute path.
When attempting to connect to an existing kernel and the `--existing`
argument does not match an existing file, it will be interpreted as a
fileglob, and the matching file in the current profile's security dir
with the latest access time will be used.
"""
if self.existing:
try:
cf = find_connection_file(self.existing)
except Exception:
self.log.critical("Could not find existing kernel connection file %s", self.existing)
self.exit(1)
self.log.info("Connecting to existing kernel: %s" % cf)
self.connection_file = cf
# should load_connection_file only be used for existing?
# as it is now, this allows reusing ports if an existing
# file is requested
try:
self.load_connection_file()
except Exception:
self.log.error("Failed to load connection file: %r", self.connection_file, exc_info=True)
self.exit(1)
def default_manager(kernel):
connection_file = find_connection_file(kernel.connection_file)
manager = QtKernelManager(connection_file=connection_file)
manager.load_connection_file()
manager.start_channels()
atexit.register(manager.cleanup_connection_file)
return manager
def main(pat):
fname = find_connection_file(pat)
with open(fname) as f:
cfg = json.load(f)
url = "%s://%s:%s" % (cfg.get('transport', 'tcp'), cfg['ip'], cfg['iopub_port'])
session = Session(key=cfg['key'])
ctx = zmq.Context.instance()
sub = ctx.socket(zmq.SUB)
sub.subscribe = b''
sub.connect(url)
# import IPython
# IPython.embed()
# return
stream = ZMQStream(sub)
stream.on_recv(lambda msg_list: log_msg(session, msg_list))
pc = PeriodicCallback(print_time, 5 * 60 * 1000)
pc.start()
IOLoop.instance().start()
def _init_kernel_manager(self):
connection_file = find_connection_file(self.app.connection_file)
manager = QtKernelManager(connection_file=connection_file)
manager.load_connection_file()
manager.start_channels()
atexit.register(manager.cleanup_connection_file)
self.kernel_manager = manager
def default_manager(kernel):
connection_file = find_connection_file(kernel.connection_file)
manager = QtKernelManager(connection_file=connection_file)
manager.load_connection_file()
manager.start_channels()
atexit.register(manager.cleanup_connection_file)
return manager
def create_kernel_manager_and_client(self, connection_file=None,
hostname=None, sshkey=None,
password=None):
"""Create kernel manager and client"""
cf = find_connection_file(connection_file, profile='default')
kernel_manager = QtKernelManager(connection_file=cf, config=None)
kernel_client = kernel_manager.client()
kernel_client.load_connection_file()
if hostname is not None:
try:
newports = self.tunnel_to_kernel(dict(ip=kernel_client.ip,
shell_port=kernel_client.shell_port,
iopub_port=kernel_client.iopub_port,
stdin_port=kernel_client.stdin_port,
hb_port=kernel_client.hb_port),
hostname, sshkey, password)
(kernel_client.shell_port, kernel_client.iopub_port,
kernel_client.stdin_port, kernel_client.hb_port) = newports
except Exception as e:
print(("Could not open ssh tunnel. The error was:\n\n" + e.message))
return None, None
kernel_client.start_channels()
# To rely on kernel's heartbeat to know when a kernel has died
kernel_client.hb_channel.unpause()
return kernel_manager, kernel_client
def init_ipython():
"""
Encapsulate Kernel creation logic: Only the kernel client, manager and shell are exposed
This is in order to ensure interoperability between major IPython changes
"""
if ipython_1:
manager = QtInProcessKernelManager()
manager.start_kernel()
manager.kernel.gui = 'qt4'
shell = manager.kernel.shell
shell.run_cell('%pylab inline')
client = manager.client()
client.start_channels()
else:
def event_loop(kernel):
kernel.timer = QTimer()
kernel.timer.timeout.connect(kernel.do_one_iteration)
kernel.timer.start(1000 * kernel._poll_interval)
kernel_app = IPKernelApp.instance()
kernel_app.initialize(['python', '--pylab=qt']) # at this point, print() won’t work anymore
kernel_app.kernel.eventloop = event_loop
connection_file = find_connection_file(kernel_app.connection_file)
manager = QtKernelManager(connection_file=connection_file)
manager.load_connection_file()
manager.start_channels()
kernel_app.start()
client = None
shell = kernel_app.shell
return client, manager, shell
def connect_kernel(self, connection_file, heartbeat=False):
self._heartbeat = heartbeat
if os.path.exists(connection_file):
self._connection_file = connection_file
else:
self._connection_file = find_connection_file(connection_file)
self._init_kernel_manager()
def init_connection_file(self):
"""find the connection file, and load the info if found.
The current working directory and the current profile's security
directory will be searched for the file if it is not given by
absolute path.
When attempting to connect to an existing kernel and the `--existing`
argument does not match an existing file, it will be interpreted as a
fileglob, and the matching file in the current profile's security dir
with the latest access time will be used.
After this method is called, self.connection_file contains the *full path*
to the connection file, never just its name.
"""
if self.existing:
try:
cf = find_connection_file(self.existing)
except Exception:
self.log.critical("Could not find existing kernel connection file %s", self.existing)
self.exit(1)
self.log.info("Connecting to existing kernel: %s" % cf)
self.connection_file = cf
else:
# not existing, check if we are going to write the file
# and ensure that self.connection_file is a full path, not just the shortname
try:
cf = find_connection_file(self.connection_file)
except Exception:
# file might not exist
if self.connection_file == os.path.basename(self.connection_file):
# just shortname, put it in security dir
cf = os.path.join(self.profile_dir.security_dir, self.connection_file)
else:
cf = self.connection_file
self.connection_file = cf
# should load_connection_file only be used for existing?
# as it is now, this allows reusing ports if an existing
# file is requested
try:
self.load_connection_file()
except Exception:
self.log.error("Failed to load connection file: %r", self.connection_file, exc_info=True)
self.exit(1)
def _create_client_for_kernel(self, cf, hostname, kf, pw):
# Verifying if the connection file exists - in the case of an empty
# file name, the last used connection file is returned.
try:
cf = find_connection_file(cf, profile='default')
except (IOError, UnboundLocalError):
QMessageBox.critical(self, _('IPython'),
_("Unable to connect to IPython <b>%s") % cf)
return
# Base client name:
# remove path and extension, and use the last part when split by '-'
base_client_name = osp.splitext(cf.split('/')[-1])[0].split('-')[-1]
# Generating the client name by appending /A, /B... until it is unique
count = 0
while True:
client_name = base_client_name + '/' + chr(65 + count)
for cl in self.get_clients():
if cl.name == client_name:
break
else:
break
count += 1
# Getting kernel_widget_id from the currently open kernels.
kernel_widget_id = None
for sw in self.extconsole.shellwidgets:
if sw.connection_file == cf.split('/')[-1]:
kernel_widget_id = id(sw)
# Verifying if frontend and kernel have compatible versions
if not self.kernel_and_frontend_match(cf):
QMessageBox.critical(
self, _("Mismatch between kernel and frontend"),
_("Your IPython frontend and kernel versions "
"are <b>incompatible!!</b>"
"<br><br>"
"We're sorry but we can't create an IPython "
"console for you."), QMessageBox.Ok)
return
# Creating the client
client = IPythonClient(self,
history_filename='history.py',
connection_file=cf,
kernel_widget_id=kernel_widget_id,
menu_actions=self.menu_actions,
hostname=hostname,
sshkey=kf,
password=pw)
# Adding the tab
self.add_tab(client, name=client.get_name())
# Connecting kernel and client
self.register_client(client, client_name)
def create_client(name):
cf = find_connection_file('emacs-' + name)
c = client.BlockingKernelClient(connection_file=cf)
c.load_connection_file()
c.start_channels()
chans = [('io', c.get_iopub_msg), ('shell', c.get_shell_msg), ('stdin', c.get_stdin_msg)]
for name, ch in chans:
t = threading.Thread(target=msg_router, args=(name, ch))
t.start()
return c
def create_client(name):
cf = find_connection_file('emacs-' + name)
c = client.BlockingKernelClient(connection_file=cf)
c.load_connection_file()
c.start_channels()
chans = [('io', c.get_iopub_msg), ('shell', c.get_shell_msg), ('stdin', c.get_stdin_msg)]
for name, ch in chans:
t = threading.Thread(target=msg_router, args=(name, ch))
t.start()
return c
def default_kernel_manager(kernel_app):
from IPython.lib.kernel import find_connection_file
from IPython.qt.manager import QtKernelManager
connection = find_connection_file(kernel_app.connection_file)
kernelManager = QtKernelManager(connection_file=connection)
kernelClient = kernelManager.client()
kernelClient.load_connection_file()
kernelClient.start_channels()
#atexit.register(kernelManager.cleanup_connection_file)
return kernelManager, kernelClient, connection
def _create_client_for_kernel(self, cf, hostname, kf, pw):
# Verifying if the connection file exists - in the case of an empty
# file name, the last used connection file is returned.
try:
cf = find_connection_file(cf, profile='default')
except (IOError, UnboundLocalError):
QMessageBox.critical(self, _('IPython'),
_("Unable to connect to IPython <b>%s") % cf)
return
# Base client name:
# remove path and extension, and use the last part when split by '-'
base_client_name = osp.splitext(cf.split('/')[-1])[0].split('-')[-1]
# Generating the client name by appending /A, /B... until it is unique
count = 0
while True:
client_name = base_client_name + '/' + chr(65 + count)
for cl in self.get_clients():
if cl.name == client_name:
break
else:
break
count += 1
# Getting kernel_widget_id from the currently open kernels.
kernel_widget_id = None
for sw in self.extconsole.shellwidgets:
if sw.connection_file == cf.split('/')[-1]:
kernel_widget_id = id(sw)
# Verifying if frontend and kernel have compatible versions
if not self.kernel_and_frontend_match(cf):
QMessageBox.critical(self,
_("Mismatch between kernel and frontend"),
_("Your IPython frontend and kernel versions "
"are <b>incompatible!!</b>"
"<br><br>"
"We're sorry but we can't create an IPython "
"console for you."
), QMessageBox.Ok)
return
# Creating the client
client = IPythonClient(self, history_filename='history.py',
connection_file=cf,
kernel_widget_id=kernel_widget_id,
menu_actions=self.menu_actions,
hostname=hostname, sshkey=kf, password=pw)
# Adding the tab
self.add_tab(client, name=client.get_name())
# Connecting kernel and client
self.register_client(client, client_name)
def __init__(self, *args, **kwargs):
connection_file = find_connection_file(kwargs.pop("connection_file"))
km = BlockingKernelManager(connection_file=connection_file)
km.load_connection_file()
heartbeat = True
km.start_channels(hb=heartbeat)
atexit.register(km.cleanup_connection_file)
super(IPythonConsoleShell, self).__init__(kernel_manager=km)
self.km = km
def __init__(self, *args, **kwargs):
connection_file = find_connection_file(kwargs.pop("connection_file"))
km = BlockingKernelManager(connection_file=connection_file)
km.load_connection_file()
heartbeat = True
km.start_channels(hb=heartbeat)
atexit.register(km.cleanup_connection_file)
super(IPythonConsoleShell, self).__init__(kernel_manager = km)
self.km = km
def default_manager(kernel):
""" Return a configured QtKernelManager
:param kernel: An IPKernelApp instance
"""
connection_file = find_connection_file(kernel.connection_file)
manager = QtKernelManager(connection_file=connection_file)
manager.load_connection_file()
manager.start_channels()
atexit.register(manager.cleanup_connection_file)
return manager
def create_kernel_manager_and_client(self,
connection_file=None,
hostname=None,
sshkey=None,
password=None):
"""Create kernel manager and client"""
cf = find_connection_file(connection_file, profile='default')
kernel_manager = QtKernelManager(connection_file=cf, config=None)
if programs.is_module_installed('IPython', '>=1.0'):
kernel_client = kernel_manager.client()
kernel_client.load_connection_file()
if hostname is not None:
try:
newports = tunnel_to_kernel(
dict(ip=kernel_client.ip,
shell_port=kernel_client.shell_port,
iopub_port=kernel_client.iopub_port,
stdin_port=kernel_client.stdin_port,
hb_port=kernel_client.hb_port), hostname, sshkey,
password)
(kernel_client.shell_port, kernel_client.iopub_port,
kernel_client.stdin_port,
kernel_client.hb_port) = newports
except Exception as e:
QMessageBox.critical(
self, _('Connection error'),
_('Could not open ssh tunnel\n') + str(e))
return None, None
kernel_client.start_channels()
# To rely on kernel's heartbeat to know when a kernel has died
kernel_client.hb_channel.unpause()
return kernel_manager, kernel_client
else:
kernel_manager.load_connection_file()
if hostname is not None:
try:
newports = tunnel_to_kernel(
dict(ip=kernel_manager.ip,
shell_port=kernel_manager.shell_port,
iopub_port=kernel_manager.iopub_port,
stdin_port=kernel_manager.stdin_port,
hb_port=kernel_manager.hb_port), hostname, sshkey,
password)
(kernel_manager.shell_port, kernel_manager.iopub_port,
kernel_manager.stdin_port,
kernel_manager.hb_port) = newports
except Exception as e:
QMessageBox.critical(
self, _('Connection error'),
_('Could not open ssh tunnel\n') + str(e))
return None, None
kernel_manager.start_channels()
return kernel_manager, None
def connect_kernel(self, connection_file, heartbeat=False):
"""Connect's to ipython kernel.
connection_file - connection file to use
heartbeat - should start heartbeat server? Workaround for problems with inproc embedded kernels
(right click save image as/save as html kills kernel heartbeat/pool(??) serwer """
self._heartbeat = heartbeat
if os.path.exists(connection_file):
self._connection_file = connection_file
else:
self._connection_file = find_connection_file(connection_file)
self._init_kernel_manager()
def get_client(cf, profile=None):
"""
Usage:
>>> kc = get_client('kernel-143a2687-f294-42b1-bdcb-6f1cc2f4cc87.json', 'dale')
>>> data = kc.execute("'123'")
>>> data
{u'text/plain': u'123'}
"""
connection_file = find_connection_file(cf, profile=profile)
km = KernelManager(connection_file=connection_file)
km.load_connection_file()
client = km.client()
return KernelClient(client)
def get_client(cf, profile=None):
"""
Usage:
>>> kc = get_client('kernel-143a2687-f294-42b1-bdcb-6f1cc2f4cc87.json', 'dale')
>>> data = kc.execute("'123'")
>>> data
{u'text/plain': u'123'}
"""
connection_file = find_connection_file(cf, profile=profile)
km = KernelManager(connection_file=connection_file)
km.load_connection_file()
client = km.client()
return KernelClient(client)
def create_kernel_manager_and_client(self, connection_file=None):
"""Create kernel manager and client"""
cf = find_connection_file(connection_file, profile='default')
kernel_manager = QtKernelManager(connection_file=cf, config=None)
if programs.is_module_installed('IPython', '>=1.0'):
kernel_client = kernel_manager.client()
kernel_client.load_connection_file()
kernel_client.start_channels()
# To rely on kernel's heartbeat to know when a kernel has died
kernel_client.hb_channel.unpause()
else:
kernel_client = None
kernel_manager.load_connection_file()
kernel_manager.start_channels()
return kernel_manager, kernel_client
def connect_kernel(self, connection_file, heartbeat=False):
"""Connect to ipython kernel.
connection_file - connection file to use
heartbeat - should start heartbeat server? Workaround for
problems with inproc embedded kernels
(right click save image as/save as html kills
kernel heartbeat/pool(??) serwer
"""
self._heartbeat = heartbeat
if os.path.exists(connection_file):
self._connection_file = connection_file
else:
self._connection_file = find_connection_file(connection_file)
self._init_kernel_manager()
def create_kernel_manager_and_client(self, connection_file=None,
hostname=None, sshkey=None,
password=None):
"""Create kernel manager and client"""
cf = find_connection_file(connection_file, profile='default')
kernel_manager = QtKernelManager(connection_file=cf, config=None)
if programs.is_module_installed('IPython', '>=1.0'):
kernel_client = kernel_manager.client()
kernel_client.load_connection_file()
if hostname is not None:
try:
newports = tunnel_to_kernel(dict(ip=kernel_client.ip,
shell_port=kernel_client.shell_port,
iopub_port=kernel_client.iopub_port,
stdin_port=kernel_client.stdin_port,
hb_port=kernel_client.hb_port),
hostname, sshkey, password)
(kernel_client.shell_port, kernel_client.iopub_port,
kernel_client.stdin_port, kernel_client.hb_port) = newports
except Exception as e:
QMessageBox.critical(self, _('Connection error'),
_('Could not open ssh tunnel\n') + str(e))
return None, None
kernel_client.start_channels()
# To rely on kernel's heartbeat to know when a kernel has died
kernel_client.hb_channel.unpause()
return kernel_manager, kernel_client
else:
kernel_manager.load_connection_file()
if hostname is not None:
try:
newports = tunnel_to_kernel(dict(ip=kernel_manager.ip,
shell_port=kernel_manager.shell_port,
iopub_port=kernel_manager.iopub_port,
stdin_port=kernel_manager.stdin_port,
hb_port=kernel_manager.hb_port),
hostname, sshkey, password)
(kernel_manager.shell_port, kernel_manager.iopub_port,
kernel_manager.stdin_port, kernel_manager.hb_port) = newports
except Exception as e:
QMessageBox.critical(self, _('Connection error'),
_('Could not open ssh tunnel\n') + str(e))
return None, None
kernel_manager.start_channels()
return kernel_manager, None
def connect_kernel(self, connection_file, heartbeat=False):
"""
connection_file: str - is the connection file name, for example
'kernel-16098.json'.
heartbeat: bool - workaround, needed for right click/save as
... errors ... i don't know how to
fix this issue. Anyone knows? Anyway it
needs more testing
example1 (standalone):
app = QtGui.QApplication([])
widget = IPythonConsoleQtWidget()
widget.set_default_style(colors='linux')
widget.connect_kernel(
connection_file='some connection file name')
app.exec_()
example2 (IPythonLocalKernelApp):
app = QtGui.QApplication([])
kernelapp = IPythonLocalKernelApp.instance()
kernelapp.initialize()
widget = IPythonConsoleQtWidget()
# Green text, black background ;)
widget.set_default_style(colors='linux')
widget.connect_kernel(
connection_file='kernelapp.get_connection_file())
app.exec_()
"""
km = QtKernelManager(
connection_file=find_connection_file(connection_file),
config=self.config)
km.load_connection_file()
km.start_channels(hb=heartbeat)
self.kernel_manager = km
atexit.register(self.kernel_manager.cleanup_connection_file)
def _createConsoleWidget(self):
if is_using_pyqt5():
layout = QtWidgets.QVBoxLayout()
else:
layout = QtGui.QVBoxLayout()
connection_file = find_connection_file(self.connection_file)
self.kernel_manager = QtKernelManager(connection_file=connection_file)
self.kernel_manager.load_connection_file()
self.kernel_manager.client_factory = QtKernelClient
self.kernel_client = self.kernel_manager.client()
self.kernel_client.start_channels()
self.ipython_widget = RichIPythonWidget(self.parent)
self.ipython_widget.kernel_manager = self.kernel_manager
self.ipython_widget.kernel_client = self.kernel_client
layout.addWidget(self.ipython_widget)
return layout
def get_widget(self, droplist_completion=True):
if IPython.__version__ < '0.13':
completion = droplist_completion
else:
completion = 'droplist' if droplist_completion else 'plain'
widget = RichIPythonWidget(gui_completion=completion)
cf = find_connection_file(self.kernel_app.connection_file)
km = QtKernelManager(connection_file=cf, config=widget.config)
km.load_connection_file()
km.start_channels()
widget.kernel_manager = km
atexit.register(km.cleanup_connection_file)
sys.stdout = self._stdout
sys.stderr = self._stderr
sys.displayhook = self._dishook
return widget
def connect_kernel(self, connection_file, heartbeat=False):
"""
connection_file: str - is the connection file name, for example 'kernel-16098.json'
heartbeat: bool - workaround, needed for right click/save as ... errors ... i don't know how to
fix this issue. Anyone knows? Anyway it needs more testing
example1 (standalone):
app = QtGui.QApplication([])
widget = IPythonConsoleQtWidget()
widget.set_default_style(colors='linux')
widget.connect_kernel(connection_file='some connection file name')
app.exec_()
example2 (IPythonLocalKernelApp):
app = QtGui.QApplication([])
kernelapp = IPythonLocalKernelApp.instance()
kernelapp.initialize()
widget = IPythonConsoleQtWidget()
# Green text, black background ;)
widget.set_default_style(colors='linux')
widget.connect_kernel(connection_file='kernelapp.get_connection_file())
app.exec_()
"""
km = QtKernelManager(
connection_file=find_connection_file(connection_file),
config=self.config)
km.load_connection_file()
km.start_channels(hb=heartbeat)
self.kernel_manager = km
atexit.register(self.kernel_manager.cleanup_connection_file)
def create_client_for_kernel(self):
"""Create a client connected to an existing kernel"""
example = _("(for example: kernel-3764.json, or simply 3764)")
while True:
cf, valid = QInputDialog.getText(self, _('IPython'),
_('Provide an IPython kernel connection file:')+\
'\n'+example,
QLineEdit.Normal)
if valid:
cf = str(cf)
match = re.match('(kernel-|^)([a-fA-F0-9-]+)(.json|$)', cf)
if match is not None:
kernel_num = match.groups()[1]
if kernel_num:
cf = 'kernel-%s.json' % kernel_num
break
else:
return
# Generating the client name and setting kernel_widget_id
match = re.match('^kernel-([a-fA-F0-9-]+).json', cf)
count = 0
kernel_widget_id = None
while True:
client_name = match.groups()[0]
if '-' in client_name: # Avoid long names
client_name = client_name.split('-')[0]
client_name = client_name + '/' + chr(65+count)
for cl in self.get_clients():
if cl.name == client_name:
kernel_widget_id = cl.kernel_widget_id
break
else:
break
count += 1
# Trying to get kernel_widget_id from the currently opened kernels if
# the previous procedure fails. This could happen when the first
# client connected to a kernel is closed but the kernel is left open
# and you try to connect new clients to it
if kernel_widget_id is None:
for sw in self.extconsole.shellwidgets:
if sw.connection_file == cf:
kernel_widget_id = id(sw)
# Verifying if the kernel exists
try:
find_connection_file(cf, profile='default')
except (IOError, UnboundLocalError):
QMessageBox.critical(self, _('IPython'),
_("Unable to connect to IPython <b>%s") % cf)
return
# Verifying if frontend and kernel have compatible versions
if not self.kernel_and_frontend_match(cf):
QMessageBox.critical(self,
_("Mismatch between kernel and frontend"),
_("Your IPython frontend and kernel versions "
"are <b>incompatible!!</b>"
"<br><br>"
"We're sorry but we can't create an IPython "
"console for you."
), QMessageBox.Ok)
return
# Creating the client
client = IPythonClient(self, history_filename='history.py',
connection_file=cf,
kernel_widget_id=kernel_widget_id,
menu_actions=self.menu_actions)
self.add_tab(client, name=client.get_name())
self.register_client(client, client_name)
def connect_kernel(self, conn, heartbeat=False):
km = QtKernelManager(connection_file=find_connection_file(conn))
km.load_connection_file()
km.start_channels(hb=heartbeat)
self.kernel_manager = km
atexit.register(self.kernel_manager.cleanup_connection_file)
import zmq
from IPython.lib.kernel import find_connection_file
from IPython.zmq.blockingkernelmanager import BlockingKernelManager
# startup channel
pidfile = '/tmp/ipython.pid'
with open(pidfile, 'r') as f:
cf = f.readline()
# remove trailing carriage-return
cf = cf[:-1]
try:
# get real pid of ipython kernel
cf = str(int(cf) + 1)
cf = find_connection_file(cf)
except IOError:
cf = str(int(cf) + 1)
cf = find_connection_file(cf)
km = BlockingKernelManager()
km.connection_file = cf
km.load_connection_file()
km.start_channels()
def run_code(code):
# execution is immediate and async, returning a UUID
msg_id = km.shell_channel.execute(code)
# get_meg can block for a reply
reply = km.shell_channel.get_msg()
if reply['content']['status'] == 'error':
def __init__(self,connection):
self.cf = find_connection_file(connection)
self.km = BlockingKernelManager(connection_file=self.cf)
self.km.load_connection_file()
self.km.start_channels()
def connect_kernel(self, conn, heartbeat=False):
km = QtKernelManager(connection_file=find_connection_file(conn))
km.load_connection_file()
km.start_channels(hb=heartbeat)
self.kernel_manager = km
atexit.register(self.kernel_manager.cleanup_connection_file)
