Spyder 4.1.1 crashed constantly for Python 3.7 and Win7-64bit

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

Spyder freezes and crashes with message “this program has stopped working” I experienced the same with 4.0.0 and 4.1.0, see 11037

What steps reproduce the problem?

1. Reinstall Spyder 4.1.1
2. Launch Spdyer from Anaconda prompt, Anaconda Navigator, or quick access
3. Wait for abou 10 seconds (doing nothing within Spyder)

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

Spyder is expected to be stable with no operation runing whatsoever. It crashes.

Paste Traceback/Error Below (if applicable)

I ran "spyder --debug-info verbose --debug-output file"
and attached the log
[spyder-debug.log](https://github.com/spyder-ide/spyder/files/4368370/spyder-debug.log)

Versions

• Spyder version: 4.1.1.
• Python version: 3.7.0 64-bit
• Qt version: 5.6.2
• PyQt version: PyQt5 5.6
• Operating System name/version: Windows 7 64-bit

Dependencies

Mandatory:

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 : 7.10.1 (OK) jedi =0.15.2 : 0.15.2 (OK) nbconvert >=4.0 : 5.6.1 (OK) numpydoc >=0.6.0 : 0.9.1 (OK) paramiko >=2.4.0 : 2.4.2 (OK) parso =0.5.2 : 0.5.2 (OK) pexpect >=4.4.0 : 4.7.0 (OK) pickleshare >=0.4 : 0.7.5 (OK) psutil >=5.3 : 5.6.7 (OK) pygments >=2.0 : 2.5.2 (OK) pylint >=0.25 : 2.4.4 (OK) pyls >=0.31.9;<0.32.0 : 0.31.9 (OK) qdarkstyle >=2.8 : 2.8 (OK) qtawesome >=0.5.7 : 0.6.0 (OK) qtconsole >=4.6.0 : 4.6.0 (OK) qtpy >=1.5.0 : 1.9.0 (OK) rtree >=0.8.3 : 0.8.3 (OK) sphinx >=0.6.6 : 2.2.2 (OK) spyder_kernels >=1.9.0;<1.10.0 : 1.9.0 (OK) watchdog : None (OK) zmq >=17 : 18.1.0 (OK)

Optional:

cython >=0.21 : 0.29.14 (OK) matplotlib >=2.0.0 : 2.2.2 (OK) numpy >=1.7 : 1.17.4 (OK) pandas >=0.13.1 : 0.25.3 (OK) scipy >=0.17.0 : 1.3.2 (OK) sympy >=0.7.3 : 1.4 (OK)

[tyNeanderthal]

Qt version: 5.6.2 PyQt version: PyQt5 5.6

These versions are too old. Please open the Anaconda prompt and run there

conda install pyqt=5.9 qt=5.9

and try again.

Problem resolved with: Python 3.7.6 64-bit | Qt 5.9.6 | PyQt5 5.9.2 | Windows 7

[ccordoba12]

Windows 10 and Python 3.8.1

There are still problems like the one you mentioned with Python 3.8. Please use 3.7 for now.