Spyder 4.0.1 crashing after 2-3 hours

Problem Description

I’m a great fan of the Spyder IDE, and I’ve been using it for over a year now.

Yesterday, I got a new computer at my office and installed the latest version of Spyder, and Spyder 4.0.1 was automatically installed with the command:

pip install spyder

I’ve been using Spyder for the whole day yesterday, and after about 2-3 hours of intense usage the IDE completely got stuck, and I was forced to close it down. Same thing happened this morning. Not sure if this helps, but in both cases I had two instances of spyder open at the new same.

OS Windows 10 Python version : 3.7.4

In the meantime, I will revert to the good old spyder3, which does not cause the same issue to happen.

What steps reproduce the problem?

1. Run 1 spyder instance
2. Run another spyder instance
3. Work with it for 2-3 hours
4. Wait for it to crash.

What is the expected output? What do you see instead?

I would expect Spyder not to get stuck and force me to close it.

Versions

• Spyder version: 4.0.1.
• Python version: 3.7.4
• Qt version: 5.12.7
• PyQt version: 5.12.3
• Operating System name/version: Windows 10 64-bit

Dependencies

atomicwrites >=1.2.0 : 1.3.0 (OK) chardet >=2.0.0 : 3.0.4 (OK) cloudpickle >=0.5.0 : 1.2.2 (OK) diff_match_patch >=20181111 : 20181111 (OK) intervaltree : None (OK) IPython >=4.0 : 7.12.0 (OK) jedi =0.14.1 : 0.14.1 (OK) nbconvert >=4.0 : 5.6.1 (OK) numpydoc >=0.6.0 : 0.9.2 (OK) pexpect >=4.4.0 : 4.8.0 (OK) pickleshare >=0.4 : 0.7.5 (OK) psutil >=0.3 : 5.6.7 (OK) pygments >=2.0 : 2.5.2 (OK) pylint >=0.25 : 2.4.4 (OK) pyls >=0.31.2;<0.32.0 : 0.31.8 (OK) zmq >=17 : 18.1.1 (OK) qdarkstyle >=2.7 : 2.8 (OK) qtawesome >=0.5.7 : 0.6.1 (OK) qtconsole >=4.6.0 : 4.6.0 (OK) qtpy >=1.5.0 : 1.9.0 (OK) sphinx >=0.6.6 : 2.3.1 (OK) spyder_kernels >=1.8.1;<2.0.0: 1.8.1 (OK) watchdog : None (OK) cython >=0.21 : None (NOK) matplotlib >=2.0.0 : 3.1.3 (OK) numpy >=1.7 : 1.16.4 (OK) pandas >=0.13.1 : 0.25.3 (OK) scipy >=0.17.0 : 1.4.1 (OK) sympy >=0.7.3 : None (NOK)

[DanyEle]

Also, just as a general suggestion, spyder3.3.6 just feels smoother and way more responsive than spyder4.0.1 or spyder4.0.0. It may be useful to try and improve these aspects of spyder4.

[DanyEle]

Same issue occurred using spyder=4.0.0 with pip.

Solved it using by installing conda and installing spyder3.3.6 with the command:

conda install spyder