creating new cell with "a" is slow #316
Description
Description of your problem
What steps will reproduce the problem?
- open Spyder, create empty notebook
- make sure you are in the command mode
- press
bto create a cell below - press
ato create a cell above
What is the expected output? What do you see instead?
Creating a cell below is fast (instantaneous), while creating a cell above takes 1 - 2 seconds.
This functionality worked in the previous jupyter-notebook release (0.2.3) - but I can't seem to get this previous release working with Spyder 4.
Versions and main components
- Spyder Version: 4.1.5
- Python Version: 3.7.3
- Qt Version: 5.9.7
- PyQt Version: 5.9.2 (pyqt5-sip=12.8.0)
- Operating system: Windows
jupyter:
# Name Version Build Channel
jupyter 1.0.0 py37_7
jupyter_client 6.1.6 py_0
jupyter_console 6.2.0 py_0
jupyter_core 4.6.3 py37_0
jupyterlab 2.2.6 py_0
jupyterlab_pygments 0.1.1 py_0
jupyterlab_server 1.2.0 py_0
notebook 6.1.1 py37_0
spyder-notebook 0.3.0 py_0 spyder-ide
Dependencies
# Mandatory:
atomicwrites >=1.2.0 : 1.4.0 (OK)
chardet >=2.0.0 : 3.0.4 (OK)
cloudpickle >=0.5.0 : 1.6.0 (OK)
diff_match_patch >=20181111 : 20200713 (OK)
intervaltree : None (OK)
IPython >=4.0 : 7.13.0 (OK)
jedi =0.17.1 : 0.17.1 (OK)
nbconvert >=4.0 : 6.0.6 (OK)
numpydoc >=0.6.0 : 0.9.1 (OK)
paramiko >=2.4.0 : 2.7.2 (OK)
parso =0.7.0 : 0.7.0 (OK)
pexpect >=4.4.0 : 4.8.0 (OK)
pickleshare >=0.4 : 0.7.5 (OK)
psutil >=5.3 : 5.6.3 (OK)
pygments >=2.0 : 2.7.1 (OK)
pylint >=1.0 : 2.6.0 (OK)
pyls >=0.34.0;<1.0.0 : 0.35.1 (OK)
qdarkstyle >=2.8 : 2.8.1 (OK)
qtawesome >=0.5.7 : 0.7.2 (OK)
qtconsole >=4.6.0 : 4.7.7 (OK)
qtpy >=1.5.0 : 1.9.0 (OK)
rtree >=0.8.3 : 0.9.4 (OK)
sphinx >=0.6.6 : 3.2.1 (OK)
spyder_kernels >=1.9.4;<1.10.0 : 1.9.4 (OK)
watchdog : None (OK)
zmq >=17 : 19.0.2 (OK)
# Optional:
cython >=0.21 : 0.29.12 (OK)
matplotlib >=2.0.0 : 3.1.0 (OK)
numpy >=1.7 : 1.18.1 (OK)
pandas >=0.13.1 : 0.25.3 (OK)
scipy >=0.17.0 : 1.4.1 (OK)
sympy >=0.7.3 : None (OK)
# Spyder plugins:
spyder_notebook : 0.3.0 (OK)