TypeError when processing completion signatures

Description

What steps will reproduce the problem?

Not sure if this is spyder or tqdm: I’m attempting to use the tqdm library and walrus operator to make a progress bar on a for loop, e.g.:

from tqdm import tqdm
for i in (pbar := tqdm(mydict.items())):
    pbar.set_description("processing mydict")
    dosomething()

This error occurs immediately on typing opening parenthesis on set_description( or after tqdm(, so possibly a problem with linting or real time code checking? I do not need to run anything through the console, it occurs while typing in the Editor. Also, the line with the for loop still shows ‘invalid syntax: pyflakes E’.

Traceback

Traceback (most recent call last):
  File "C:\Users\tswailes\AppData\Local\Programs\Python\Python39\lib\site-packages\spyder\plugins\completion\providers\languageserver\client.py", line 558, in on_msg_received
    handler(resp['result'], req_id)
  File "C:\Users\tswailes\AppData\Local\Programs\Python\Python39\lib\site-packages\spyder\plugins\completion\providers\languageserver\providers\document.py", line 155, in process_signature_completion
    if len(response['signatures']) > 0:
TypeError: list indices must be integers or slices, not str

Versions

• Spyder version: 5.3.0
• Python version: 3.9.0
• Qt version: 5.12.10
• 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           :  1.6.0 (OK)
cookiecutter >=1.6.0          :  1.7.3 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.1.0 (OK)
IPython >=7.31.1;<8.0.0       :  7.32.0 (OK)
jedi >=0.17.2;<0.19.0         :  0.17.2 (OK)
jellyfish >=0.7               :  0.9.0 (OK)
jsonschema >=3.2.0            :  3.2.0 (OK)
keyring >=17.0.0              :  23.0.0 (OK)
nbconvert >=4.0               :  6.0.7 (OK)
numpydoc >=0.6.0              :  1.1.0 (OK)
paramiko >=2.4.0              :  2.7.2 (OK)
parso >=0.7.0;<0.9.0          :  0.7.0 (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                :  2.8.1 (OK)
pylint >=2.5.0                :  2.7.2 (OK)
pyls_spyder >=0.4.0           :  0.4.0 (OK)
pylsp >=1.4.1;<1.5.0          :  1.4.1 (OK)
pylsp_black >=1.2.0           :  1.2.1 (OK)
qdarkstyle >=3.0.2;<3.1.0     :  3.0.2 (OK)
qstylizer >=0.1.10            :  0.2.1 (OK)
qtawesome >=1.0.2             :  1.0.2 (OK)
qtconsole >=5.3.0;<5.4.0      :  5.3.0 (OK)
qtpy >=2.0.1                  :  2.0.1 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  60.9.3 (OK)
sphinx >=0.6.6                :  3.5.2 (OK)
spyder_kernels >=2.3.0;<2.4.0 :  2.3.0 (OK)
textdistance >=4.2.0          :  4.2.1 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog >=0.10.3             :  1.0.2 (OK)
zmq >=17                      :  22.3.0 (OK)

# Optional:
cython >=0.21                 :  None (NOK)
matplotlib >=3.0.0            :  None (NOK)
numpy >=1.7                   :  1.22.2 (OK)
pandas >=1.1.1                :  1.4.1 (OK)
scipy >=0.17.0                :  1.8.0 (OK)
sympy >=0.7.3                 :  None (NOK)

[ccordoba12]

Thanks @rhkarls for the reproducible case! I’m also seeing this error in the latest Spyder. We’ll try to fix it in our next version (5.3.1), to be released in a couple of weeks.

[TSwailes]

@rhkarls interesting, this is definitely the same behaviour I was getting with an error right after typing the opening bracket. I don’t get the same error with your code example though, since updating jedi and parso. I just tried a fresh install of spyder 5.3.0 into a venv and can’t replicate the error there either - so perhaps it’s something completely external? This is my package list at the moment where everything seems to be working correctly:

Package Version

---

alabaster 0.7.12 arrow 1.2.2 astroid 2.11.3 atomicwrites 1.4.0 attrs 21.4.0 autopep8 1.6.0 Babel 2.10.1 backcall 0.2.0 bcrypt 3.2.0 beautifulsoup4 4.11.1 binaryornot 0.4.4 black 22.3.0 bleach 5.0.0 certifi 2021.10.8 cffi 1.15.0 chardet 4.0.0 charset-normalizer 2.0.12 click 8.1.3 cloudpickle 2.0.0 colorama 0.4.4 cookiecutter 1.7.3 cryptography 37.0.1 debugpy 1.6.0 decorator 5.1.1 defusedxml 0.7.1 diff-match-patch 20200713 dill 0.3.4 docutils 0.17.1 entrypoints 0.4 fastjsonschema 2.15.3 flake8 4.0.1 idna 3.3 imagesize 1.3.0 importlib-metadata 4.11.3 inflection 0.5.1 intervaltree 3.1.0 ipykernel 6.13.0 ipython 7.33.0 ipython-genutils 0.2.0 isort 5.10.1 jedi 0.18.1 jellyfish 0.9.0 Jinja2 3.1.2 jinja2-time 0.2.0 joblib 1.1.0 jsonschema 4.4.0 jupyter-client 7.3.0 jupyter-core 4.10.0 jupyterlab-pygments 0.2.2 keyring 23.5.0 lazy-object-proxy 1.7.1 MarkupSafe 2.1.1 matplotlib-inline 0.1.3 mccabe 0.6.1 mistune 0.8.4 mypy-extensions 0.4.3 nbclient 0.6.0 nbconvert 6.5.0 nbformat 5.3.0 nest-asyncio 1.5.5 numpy 1.22.3 numpydoc 1.2.1 packaging 21.3 pandocfilters 1.5.0 paramiko 2.10.4 parso 0.8.3 pathspec 0.9.0 pexpect 4.8.0 pickleshare 0.7.5 pip 20.2.3 platformdirs 2.5.2 pluggy 1.0.0 poyo 0.5.0 prompt-toolkit 3.0.29 psutil 5.9.0 ptyprocess 0.7.0 pycodestyle 2.8.0 pycparser 2.21 pydocstyle 6.1.1 pyflakes 2.4.0 Pygments 2.12.0 pylint 2.13.7 pyls-spyder 0.4.0 PyNaCl 1.5.0 pyparsing 3.0.8 PyQt5 5.15.6 PyQt5-Qt5 5.15.2 PyQt5-sip 12.10.1 PyQtWebEngine 5.15.5 PyQtWebEngine-Qt5 5.15.2 pyrsistent 0.18.1 python-dateutil 2.8.2 python-lsp-black 1.2.1 python-lsp-jsonrpc 1.0.0 python-lsp-server 1.4.1 python-slugify 6.1.2 pytz 2022.1 pywin32 303 pywin32-ctypes 0.2.0 pyzmq 22.3.0 QDarkStyle 3.0.3 qstylizer 0.2.1 QtAwesome 1.1.1 qtconsole 5.3.0 QtPy 2.0.1 requests 2.27.1 rope 1.0.0 Rtree 1.0.0 scikit-learn 1.0.2 scipy 1.8.0 setuptools 62.1.0 six 1.16.0 sklearn 0.0 snowballstemmer 2.2.0 sortedcontainers 2.4.0 soupsieve 2.3.2.post1 Sphinx 4.5.0 sphinxcontrib-applehelp 1.0.2 sphinxcontrib-devhelp 1.0.2 sphinxcontrib-htmlhelp 2.0.0 sphinxcontrib-jsmath 1.0.1 sphinxcontrib-qthelp 1.0.3 sphinxcontrib-serializinghtml 1.1.5 spyder 5.3.0 spyder-kernels 2.3.0 text-unidecode 1.3 textdistance 4.2.2 threadpoolctl 3.1.0 three-merge 0.1.1 tinycss2 1.1.1 toml 0.10.2 tomli 2.0.1 tornado 6.1 tqdm 4.64.0 traitlets 5.1.1 typing-extensions 4.2.0 ujson 5.2.0 urllib3 1.26.9 watchdog 2.1.7 wcwidth 0.2.5 webencodings 0.5.1 wrapt 1.14.0 yapf 0.32.0 zipp 3.8.0