8000 in _axes.py: Added repr to error messages instead of using str by Cloverwave · Pull Request #23383 · matplotlib/matplotlib · GitHub
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PR Summary

PR Checklist

Tests and Styling

  • Has pytest style unit tests (and pytest passes).
  • Is Flake 8 compliant (install flake8-docstrings and run flake8 --docstring-convention=all).

Documentation

  • New features are documented, with examples if plot related.
  • New features have an entry in doc/users/next_whats_new/ (follow instructions in README.rst there).
  • API changes documented in doc/api/next_api_changes/ ( 10BC0 follow instructions in README.rst there).
  • Documentation is sphinx and numpydoc compliant (the docs should build without error).

@Cloverwave Cloverwave changed the title Update _axes.py _axes.py: Added repr to error messages instead of using str Jul 2, 2022
@Cloverwave Cloverwave changed the title _axes.py: Added repr to error messages instead of using str in _axes.py: Added repr to error messages instead of using str Jul 2, 2022
@jklymak
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jklymak commented Jul 2, 2022

Can you provide some context as to why you are doing this? Or maybe mark as draft until you are ready?

raise ValueError(f"{name} must be a single scalar value, "
f"but got {val}")
raise ValueError(f"{repr(name)} must be a single scalar value,"
f" but got {repr(val)}")
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Suggested change
f" but got {repr(val)}")
f" but got {val!r}")

and so on also works (and is more compact).

f'and width ({width.dtype}) '
f'are incompatible') from e
raise TypeError('the dtypes of parameters x'
f' ({repr(x.dtype)}) '
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I'm not sure that we want repr here.

@@ -2899,7 +2900,7 @@ def stem(self, *args, linefmt=None, markerfmt=None, basefmt=None, bottom=0,
"""
if not 1 <= len(args) <= 5:
raise TypeError('stem expected between 1 and 5 positional '
'arguments, got {}'.format(args))
f'arguments, got {repr(args)}')
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This will most likely not produce the expected results.

@@ -3124,7 +3125,8 @@ def get_next_color():

_api.check_isinstance(Number, radius=radius, startangle=startangle)
if radius <= 0:
raise ValueError(f'radius must be a positive number, not {radius}')
raise ValueError('radius must be a positive number, not'
f' {repr(radius)}')
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This doesn't make sense.

@oscargus
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oscargus commented Jul 4, 2022

I take it that this is related to #21959

However, we do not always want the repr. Typically, for string input it makes sense (as one a) do not have to type the "/' and b) any line breaks or special characters are shown more clearly). But for e.g. a float value or a type it will not make any difference, it will print the same and is just confusing to have the additional call.

@anntzer
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anntzer commented Jul 4, 2022

Agreed with @oscargus; also note that this could/should be spelled {foo!r} instead of {repr(foo)}, for conciseness.

@jklymak
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jklymak commented Jul 7, 2022

I'm moving to draft until revised. Thanks!

@jklymak jklymak marked this pull request as draft July 7, 2022 08:26
6E6B @Cloverwave Cloverwave closed this by deleting the head repository Sep 11, 2022
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