Error when getting hover of "dict"

Description

What steps will reproduce the problem?

I got the following error after writing

dict()

in the editor and placing the mouse on top of it.

Traceback

    at_point=self._last_point)
    signature = self._format_signature(signature)
    parameter=parameter,
IndexError: tuple index out of range

Traceback (most recent call last):
    msg = self.format(record)
    return fmt.format(record)
    record.message = record.getMessage()
    msg = msg % self.args
ValueError: incomplete format
Call stack:
    start.main()
    mainwindow.main()
    mainwindow = run_spyder(app, options, args)
    app.exec_()
    handler(resp['result'], req_id)
    {'params': contents})
    handler(params)
    self.log_lsp_handle_errors("Error when processing hover")
    logger.error('%', 1, stack_info=True)
Arguments: (1,)

Versions

• Spyder version: 4.0.0.dev0 061f7c3d0
• Python version: 3.6.6
• Qt version: 5.9.6
• PyQt5 version: 5.9.2
• Operating System: Linux 4.13.16-041316-generic

Dependencies

pygments >=2.0    :  2.3.1 (OK)
qdarkstyle >=2.6.4:  2.6.5 (OK)
sphinx >=0.6.6    :  1.8.2 (OK)
psutil >=0.3      :  5.4.8 (OK)
pyls >=0.19.0     :  0.90.0.dev0 (OK)
nbconvert >=4.0   :  5.4.1 (OK)
pandas >=0.13.1   :  0.23.4 (OK)
numpy >=1.7       :  1.15.4 (OK)
sympy >=0.7.3     :  1.3 (OK)
cython >=0.21     :  0.29.2 (OK)
qtconsole >=4.2.0 :  4.4.2 (OK)
IPython >=4.0     :  7.3.0 (OK)
matplotlib >=2.0.0:  3.0.2 (OK)
pylint >=0.25     :  2.1.1 (OK)

[ccordoba12]

@goanpeca, please take a look at this one.

[ccordoba12]

I could check for now for -> which seems a specific character of these methods and simply not color anything.

I think that’s not robust enough. The simplest solution should be: if you can’t find a signature, simply return the docstring.