Fix problems when connecting to external kernels

spyder/plugins/ipythonconsole.py

@@ -1359,7 +1359,7 @@ def _create_client_for_kernel(self, connection_file, hostname, sshkey,
                                   password):
         # Verifying if the connection file exists
         try:
-            find_connection_file(osp.basename(connection_file))
+            connection_file = find_connection_file(osp.basename(connection_file))
         except (IOError, UnboundLocalError):
             QMessageBox.critical(self, _('IPython'),
                                  _("Unable to connect to "
@@ -1369,6 +1369,7 @@ def _create_client_for_kernel(self, connection_file, hostname, sshkey,
         # Getting the master name that corresponds to the client
         # (i.e. the i in i/A)
         master_name = None
+        external_kernel = False
         slave_ord = ord('A') - 1
         kernel_manager = None
         for cl in self.get_clients():
@@ -1387,6 +1388,7 @@ def _create_client_for_kernel(self, connection_file, hostname, sshkey,
         if master_name is None:
             self.master_clients += 1
             master_name = to_text_string(self.master_clients)
+            external_kernel = True
 
         # Set full client name
         name = master_name + '/' + chr(slave_ord + 1)
@@ -1400,6 +1402,7 @@ def _create_client_for_kernel(self, connection_file, hostname, sshkey,
                               connection_file=connection_file,
                               menu_actions=self.menu_actions,
                               hostname=hostname,
+                              external_kernel=external_kernel,
                               slave=True)
 
         # Create kernel client

spyder/widgets/ipythonconsole/client.py

@@ -82,7 +82,8 @@ class ClientWidget(QWidget, SaveHistoryMixin):
     def __init__(self, plugin, name, history_filename, config_options,
                  additional_options, interpreter_versions,
                  connection_file=None, hostname=None,
-                 menu_actions=None, slave=False):
+                 menu_actions=None, slave=False,
+                 external_kernel=False):
         super(ClientWidget, self).__init__(plugin)
         SaveHistoryMixin.__init__(self)
 
@@ -104,6 +105,7 @@ def __init__(self, plugin, name, history_filename, config_options,
         self.shellwidget = ShellWidget(config=config_options,
                                        additional_options=additional_options,
                                        interpreter_versions=interpreter_versions,
+                                       external_kernel=external_kernel,
                                        local_kernel=True)
         self.shellwidget.hide()
         self.infowidget = WebView(self)

spyder/widgets/ipythonconsole/namespacebrowser.py

@@ -203,7 +203,8 @@ def _handle_status(self, msg):
             self._kernel_is_starting = True
         elif state == 'idle' and msg_type == 'shutdown_request':
             # This handles restarts asked by the user
-            self.set_namespace_view_settings()
-            self.refresh_namespacebrowser()
+            if self.namespacebrowser is not None:
+                self.set_namespace_view_settings()
+                self.refresh_namespacebrowser()
         else:
             super(NamepaceBrowserWidget, self)._handle_status(msg)

spyder/widgets/ipythonconsole/shell.py

@@ -47,7 +47,8 @@ class ShellWidget(NamepaceBrowserWidget, HelpWidget, DebuggingWidget):
     new_client = Signal()
     sig_got_reply = Signal()
 
-    def __init__(self, additional_options, interpreter_versions, *args, **kw):
+    def __init__(self, additional_options, interpreter_versions,
+                 external_kernel, *args, **kw):
         # To override the Qt widget used by RichJupyterWidget
         self.custom_control = ControlWidget
         self.custom_page_control = PageControlWidget
@@ -57,10 +58,11 @@ def __init__(self, additional_options, interpreter_versions, *args, **kw):
 
         self.set_background_color()
 
-        # --- Spyder variables ---
+        # Additional variables
         self.ipyclient = None
+        self.external_kernel = external_kernel
 
-        # --- Keyboard shortcuts ---
+        # Keyboard shortcuts
         self.shortcuts = self.create_shortcuts()
 
         # To save kernel replies in silent execution
@@ -245,6 +247,9 @@ def _banner_default(self):
         Reimplement banner creation to let the user decide if he wants a
         banner or not
         """
+        # Don't change banner for external kernels
+        if self.external_kernel:
+            return ''
         show_banner_o = self.additional_options['show_banner']
         if show_banner_o:
             return self.long_banner()