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TST: Address MPL 3.6 deprecation warnings #48695

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merged 4 commits into from Sep 22, 2022
Merged

TST: Address MPL 3.6 deprecation warnings #48695

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b7fa399
TST: Address MPL 3.6 deprecation warnings
mroeschke Sep 21, 2022
201f068
Address min build
mroeschke Sep 21, 2022
1ff67c4
missing ()
mroeschke Sep 22, 2022
0571367
Merge remote-tracking branch 'upstream/main' into fix/warings
mroeschke Sep 22, 2022
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7 changes: 5 additions & 2 deletions pandas/io/formats/style.py
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Expand Up @@ -3930,7 +3930,10 @@ def _background_gradient(
rng = smax - smin
# extend lower / upper bounds, compresses color range
norm = mpl.colors.Normalize(smin - (rng * low), smax + (rng * high))
rgbas = plt.cm.get_cmap(cmap)(norm(gmap))
if cmap is None:
rgbas = mpl.colormaps[mpl.rcParams["image.cmap"]](norm(gmap))
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else:
rgbas = mpl.colormaps[cmap](norm(gmap))

def relative_luminance(rgba) -> float:
"""
Expand Down Expand Up @@ -4210,7 +4213,7 @@ def css_calc(x, left: float, right: float, align: str, color: str | list | tuple
# use the matplotlib colormap input
with _mpl(Styler.bar) as (plt, mpl):
cmap = (
mpl.cm.get_cmap(cmap)
mpl.colormaps[cmap]
if isinstance(cmap, str)
else cmap # assumed to be a Colormap instance as documented
)
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2 changes: 1 addition & 1 deletion pandas/tests/io/formats/style/test_matplotlib.py
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Expand Up @@ -260,7 +260,7 @@ def test_background_gradient_gmap_wrong_series(styler_blank):
styler_blank.background_gradient(gmap=gmap, axis=None)._compute()


@pytest.mark.parametrize("cmap", ["PuBu", mpl.cm.get_cmap("PuBu")])
@pytest.mark.parametrize("cmap", ["PuBu", mpl.colormaps["PuBu"]])
def test_bar_colormap(cmap):
data = DataFrame([[1, 2], [3, 4]])
ctx = data.style.bar(cmap=cmap, axis=None)._compute().ctx
Expand Down
4 changes: 4 additions & 0 deletions pandas/tests/plotting/common.py
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Expand Up @@ -479,25 +479,29 @@ def is_grid_on():
mpl.rc("axes", grid=False)
obj.plot(kind=kind, **kws)
assert not is_grid_on()
self.plt.clf()

self.plt.subplot(1, 4 * len(kinds), spndx)
spndx += 1
mpl.rc("axes", grid=True)
obj.plot(kind=kind, grid=False, **kws)
assert not is_grid_on()
self.plt.clf()

if kind not in ["pie", "hexbin", "scatter"]:
self.plt.subplot(1, 4 * len(kinds), spndx)
spndx += 1
mpl.rc("axes", grid=True)
obj.plot(kind=kind, **kws)
assert is_grid_on()
self.plt.clf()

self.plt.subplot(1, 4 * len(kinds), spndx)
spndx += 1
mpl.rc("axes", grid=False)
obj.plot(kind=kind, grid=True, **kws)
assert is_grid_on()
self.plt.clf()

def _unpack_cycler(self, rcParams, field="color"):
"""
Expand Down