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Commit 1ad4edd

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cairo backend: default to pycairo
As seen in matplotlib#13042 it's a bit faster than cairocffi and it also takes 50 ms less time to import here. Also the GTK3Cairo backend requires pycairo, so there is a good chance it's already loaded anyway for that case.
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‎lib/matplotlib/backends/backend_cairo.py‎

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@@ -11,21 +11,18 @@
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import numpy as np
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# cairocffi is more widely compatible than pycairo so try it first.
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try:
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import cairocffi as cairo
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import cairo
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if cairo.version_info < (1, 11, 0):
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# Introduced create_for_data for Py3.
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raise ImportError
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except ImportError:
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try:
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import cairo
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import cairocffiascairo
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except ImportError:
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raise ImportError("cairo backend requires that cairocffi or pycairo "
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"is installed")
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else:
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if cairo.version_info < (1, 11, 0):
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# Introduced create_for_data for Py3.
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raise ImportError(
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"cairo {} is installed; cairo>=1.11.0 is required"
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.format(cairo.version))
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raise ImportError(
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"cairo backend requires that pycairo>=1.11.0 or cairocffi"
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"is installed")
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backend_version = cairo.version
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