Spyder 4.0.0 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

Upon updating conda (from conda prompt) and Spyder (to 4.0.0, from Anaconda Navigator), and then launching Spyder (from Anaconda Navigator), Spyder predictably crash in about 5 seconds after launched with message “Python has stopped working”. Launching Spyder from the start menu or from the conda prompt gave the same results. Have tried to restart Spyder/conda/PC a couple of times, as well as updating conda, re-installing Spyder 4.0.0, and none would change the behavior. The problem seems to be resolved when re-installed and launched Spyder 3.3.6, but re-emerge when re-updated to 4.0.0.

What steps reproduce the problem?

1. update conda (conda version : 4.8.0 conda-build version : 3.15.1 python version : 3.7.0.final.0)
2. update Spyder to 4.0.0
3. launch Spyder

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

I wasn’t interacting with Spyder so I expect it to remain still. It crashed instead.

Paste Traceback/Error Below (if applicable)

PASTE TRACEBACK HERE

I ran “spyder --debug-info verbose --debug-output file” and attached the log spyder-debug.log

Versions

• Spyder version: 4.0.0
• Python version: 3.7.0.final.0
• Qt version:
• PyQt version:
• Operating System name/version: Windows 7 Professional (service pack 1)

Dependencies

PASTE DEPENDENCIES HERE

cloudpickle >=0.5.0 : 1.2.2 (OK) pygments >=2.0 : 2.5.2 (OK) qtconsole >=4.6.0 : 4.6.0 (OK) nbconvert >=4.0 : 5.6.1 (OK) sphinx >=0.6.6 : 2.2.2 (OK) pylint >=0.25 : 2.4.4 (OK) psutil >=0.3 : 5.6.7 (OK) qtawesome >=0.5.7 : 0.6.0 (OK) qtpy >=1.5.0 : 1.9.0 (OK) pickleshare >=0.4 : 0.7.5 (OK) zmq >=17 : 18.1.0 (OK) chardet >=2.0.0 : 3.0.4 (OK) numpydoc >=0.6.0 : 0.9.1 (OK) spyder_kernels >=1.8.1;<2.0.0: 1.8.1 (OK) qdarkstyle >=2.7 : 2.7 (OK) atomicwrites >=1.2.0 : 1.3.0 (OK) diff_match_patch >=20181111 : 20181111 (OK) intervaltree : None (OK) watchdog : None (OK) keyring : None (OK) pexpect >=4.4.0 : 4.7.0 (OK) pympler : None (OK) sympy >=0.7.3 : None (NOK) cython >=0.21 : None (NOK) IPython >=4.0 : 7.10.1 (OK) matplotlib >=2.0.0 : None (NOK) pandas >=0.13.1 : 0.25.3 (OK) numpy >=1.7 : 1.17.4 (OK) scipy >=0.17.0 : 1.3.2 (OK) pyls >=0.31.2;<0.32.0 : 0.31.2 (OK) rtree >=0.8.3 : 0.8.3 (OK)

[ccordoba12]

Hopefully it’ll be available in Anaconda by the end of the week at most. Unfortunately, we are not in control of that.

[ccordoba12]

This is fixed in our latest version. Please update by opening the Anaconda Prompt and running there

conda update anaconda
conda install spyder=4.1.3