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Commit04ce3e9

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Userepr in scatter error message (#24403)
* use repr in error messagecloses#21959* add test for repr error message* fix formatting* clean up formatting and naming* add `pragma: no cover`* remove import and function name a bit more explicit
1 parentdf761c9 commit04ce3e9

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2 files changed

+15
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lines changed

2 files changed

+15
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‎lib/matplotlib/axes/_axes.py

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -4416,7 +4416,7 @@ def invalid_shape_exception(csize, xsize):
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# severe failure => one may appreciate a verbose feedback.
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raiseValueError(
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f"'c' argument must be a color, a sequence of colors, "
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f"or a sequence of numbers, not{c}")fromerr
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f"or a sequence of numbers, not{c!r}")fromerr
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else:
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iflen(colors)notin (0,1,xsize):
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# NB: remember that a single color is also acceptable.

‎lib/matplotlib/tests/test_axes.py

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -8290,3 +8290,17 @@ def test_extent_units():
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withpytest.raises(ValueError,
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match="set_extent did not consume all of the kwargs"):
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im.set_extent([2,12,date_first,date_last],clip=False)
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deftest_scatter_color_repr_error():
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defget_next_color():
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return'blue'# pragma: no cover
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msg= (
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r"'c' argument must be a color, a sequence of colors"
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r", or a sequence of numbers, not 'red\\n'"
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)
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withpytest.raises(ValueError,match=msg):
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c='red\n'
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mpl.axes.Axes._parse_scatter_color_args(
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c,None,kwargs={},xsize=2,get_next_color_func=get_next_color)

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