# Buggy code
def silent_exec_input(self, code):
    """Silently execute code through stdin"""
    self._hidden = True

    # Wait until the kernel returns an answer
    wait_loop = QEventLoop()
    self.sig_input_reply.connect(wait_loop.quit)
    self.kernel_client.iopub_channel.flush()
    self.kernel_client.input(code)
    wait_loop.exec_()

    # Remove loop connection and loop
    self.sig_input_reply.disconnect(wait_loop.quit)
    wait_loop = None

    # Restore hidden state
    self._hidden = False

    # Emit signal
    if "pdb_step" in code and self._input_reply is not None:
        fname = self._input_reply["fname"]
        lineno = self._input_reply["lineno"]
        self.sig_pdb_step.emit(fname, lineno)
    elif "get_namespace_view" in code:
        view = self._input_reply
        self.sig_namespace_view.emit(view)
    elif "get_var_properties" in code:
        properties = self._input_reply
        self.sig_var_properties.emit(properties)


# Traceback (TypeError)
Traceback (most recent call last):
File "D:\code\thirdparty\spyder\spyder\widgets\ipythonconsole\namespacebrowser.py", line 49, in <lambda>
self.namespacebrowser.process_remote_view(data))
File "D:\code\thirdparty\spyder\spyder\widgets\variableexplorer\namespacebrowser.py", line 232, in process_remote_view
self.set_data(remote_view)
File "D:\code\thirdparty\spyder\spyder\widgets\variableexplorer\namespacebrowser.py", line 243, in set_data
self.editor.set_data(data)
File "D:\code\thirdparty\spyder\spyder\widgets\variableexplorer\collectionseditor.py", line 830, in set_data
self.model.set_data(data, self.dictfilter)
File "D:\code\thirdparty\spyder\spyder\widgets\variableexplorer\collectionseditor.py", line 170, in set_data
self.set_size_and_type()
File "D:\code\thirdparty\spyder\spyder\widgets\variableexplorer\collectionseditor.py", line 185, in set_size_and_type
for index in range(start, stop) ]
TypeError: 'int' object has no attribute '__getitem__'

# Fixed code
def silent_exec_input(self, code):
    """Silently execute code through stdin"""
    self._hidden = True

    # Wait until the kernel returns an answer
    wait_loop = QEventLoop()
    self.sig_input_reply.connect(wait_loop.quit)
    self.kernel_client.iopub_channel.flush()
    self.kernel_client.input(code)
    wait_loop.exec_()

    # Remove loop connection and loop
    self.sig_input_reply.disconnect(wait_loop.quit)
    wait_loop = None

    # Restore hidden state
    self._hidden = False

    # Emit signal
    if isinstance(self._input_reply, dict):
        if "pdb_step" in code and "fname" in self._input_reply:
            fname = self._input_reply["fname"]
            lineno = self._input_reply["lineno"]
            self.sig_pdb_step.emit(fname, lineno)
        elif "get_namespace_view" in code:
            if "fname" not in self._input_reply:
                view = self._input_reply
            else:
                view = None
            self.sig_namespace_view.emit(view)
        elif "get_var_properties" in code:
            if "fname" not in self._input_reply:
                properties = self._input_reply
            else:
                properties = None
            self.sig_var_properties.emit(properties)
    else:
        self.kernel_client.iopub_channel.flush()
        self._input_reply = {}
        self._input_reply_failed = True
        self.sig_dbg_kernel_restart.emit()