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Clarify to_rgba docstring. #7548

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Merged
tacaswell merged 1 commit into from
Dec 4, 2016
+4 −2
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Clarify to_rgba docstring. #7548

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6 changes: 4 additions & 2 deletions lib/matplotlib/colors.py
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Original file line number Diff line number Diff line change
Expand Up @@ -120,7 +120,8 @@ def is_color_like(c):
def to_rgba(c, alpha=None):
"""Convert `c` to an RGBA color.

If `alpha` is not `None`, it forces the alpha value.
If `alpha` is not `None`, it forces the alpha value, except if `c` is
"none" (case-insensitive), which always maps to `(0, 0, 0, 0)`.
"""
# Special-case nth color syntax because it should not be cached.
if _is_nth_color(c):
Expand All @@ -142,7 +143,8 @@ def to_rgba(c, alpha=None):
def _to_rgba_no_colorcycle(c, alpha=None):
"""Convert `c` to an RGBA color, with no support for color-cycle syntax.

If `alpha` is not `None`, it forces the alpha value.
If `alpha` is not `None`, it forces the alpha value, except if `c` is
"none" (case-insensitive), which always maps to `(0, 0, 0, 0)`.
"""
orig_c = c
if isinstance(c, six.string_types):
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