Regression: Spyder 5.1.5 doesn't enter on debug mode on breakpoint() command

[mhabets]

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

Doesn't enter on debug mode on breakpoint() command. It was working very well with Spyder 5.1.1 but broke as soon as I updated to 5.1.5. Is there any new setting to be changed?

What steps reproduce the problem?

for i in range(3):
    breakpoint()
    print(i)

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

Should enter in debug mode and stop before print(i). It is working within IPython started from the terminal:

(py38_forge) C:\Windows\system32>ipython
Python 3.8.12 | packaged by conda-forge | (default, Sep 16 2021, 01:40:49) [MSC v.1916 64 bit (AMD64)]
Type 'copyright', 'credits' or 'license' for more information
IPython 7.27.0 -- An enhanced Interactive Python. Type '?' for help.
In [1]: for i in range(3):
   ...:     breakpoint()
   ...:     print(i)
   ...:
<ipython-input-1-f0a609844131> in <module>
      1 for i in range(3):
      2     breakpoint()
----> 3     print(i)
      4

Versions

• Spyder version: 5.1.5 None
• Python version: 3.8.12 64-bit
• Qt version: 5.12.9
• PyQt5 version: 5.12.3
• Operating System: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  2.0.0 (OK)
cookiecutter >=1.6.0          :  1.6.0 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.0.2 (OK)
IPython >=7.6.0               :  7.27.0 (OK)
jedi >=0.17.2;<0.19.0         :  0.18.0 (OK)
jsonschema >=3.2.0            :  3.2.0 (OK)
keyring >=17.0.0              :  23.2.1 (OK)
nbconvert >=4.0               :  6.1.0 (OK)
numpydoc >=0.6.0              :  1.1.0 (OK)
paramiko >=2.4.0              :  2.7.2 (OK)
parso >=0.7.0;<0.9.0          :  0.8.2 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.8.0 (OK)
pygments >=2.0                :  2.10.0 (OK)
pylint >=2.5.0;<2.10.0        :  2.9.6 (OK)
pyls_spyder >=0.4.0           :  0.4.0 (OK)
pylsp >=1.2.2;<1.3.0          :  1.2.2 (OK)
pylsp_black >=1.0.0           :  None (OK)
qdarkstyle =3.0.2             :  3.0.2 (OK)
qstylizer >=0.1.10            :  0.2.1 (OK)
qtawesome >=1.0.2             :  1.0.3 (OK)
qtconsole >=5.1.0             :  5.1.1 (OK)
qtpy >=1.5.0                  :  1.11.1 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  58.0.4 (OK)
sphinx >=0.6.6                :  4.2.0 (OK)
spyder_kernels >=2.1.1;<2.2.0 :  2.1.1 (OK)
textdistance >=4.2.0          :  4.2.1 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog >=0.10.3             :  2.1.5 (OK)
zmq >=17                      :  22.3.0 (OK)

# Optional:
cython >=0.21                 :  None (OK)
matplotlib >=2.0.0            :  3.3.2 (OK)
numpy >=1.7                   :  1.21.2 (OK)
pandas >=1.1.1                :  1.2.4 (OK)
scipy >=0.17.0                :  1.6.3 (OK)
sympy >=0.7.3                 :  None (OK)

[juanis2112]

HI @mhabets thanks for reporting. I can successfully reproduce this issue in 5.1.5. We will need to fix it in our next version. @ccordoba12

[ccordoba12]

Hey @juanis2112, thanks for the ping and sorry for my late reply! I have a fix for this, which will be part of the next version of spyder-kernels, to be released tomorrow.

@mhabets, if you're using pip or conda-forge, you'll need to update to version 2.1.2 (once it's out) to get it.

[mhabets]

Working now 😃😃👍