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Typing: Image.getchannel

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This commit is contained in:
Eric Soroos 2018-01-05 12:36:52 +00:00
parent 4b47177634
commit e220e00386
1 changed files with 9 additions and 5 deletions
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14
src/PIL/Image.py
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@ -741,7 +741,7 @@ class Image(object):
:param encoder_name: What encoder to use. The default is to
use the standard "raw" encoder.
:param *args: Extra arguments to the encoder. May be one tuple,
:param *args: Extra arguments to the encoder. May be one tuple,
or individual arguments
:rtype: A bytes object.
"""
@ -2002,7 +2002,7 @@ class Image(object):
open_fp = True
else:
_fp = fp # type: ignore
if not filename and hasattr(_fp, "name") and isPath(_fp.name):
# only set the name for metadata purposes
filename = _fp.name
@ -2128,14 +2128,18 @@ class Image(object):
"""
self.load()
channel_int = 0
if isStringType(channel):
try:
channel = self.getbands().index(channel)
channel_int = self.getbands().index(channel)
except ValueError:
raise ValueError(
'The image has no channel "{}"'.format(channel))
else:
channel_int = channel # type: ignore
return self._new(self.im.getband(channel))
return self._new(self.im.getband(channel_int))
def tell(self):
# type: () -> int
@ -2223,7 +2227,7 @@ class Image(object):
in the output image.
:returns: An :py:class:`~PIL.Image.Image` object.
"""
if self.mode == 'LA':
return self.convert('La').transform(
size, method, data, resample, fill).convert('LA')