mirror of
https://github.com/python-pillow/Pillow.git
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4de5477b61
With the introduction and use of pytest, it is simple and easy to
execute specific tests in isolation through documented command line
arguments. Either by specifying the module path or through the `-k
EXPRESSION` argument. There is no longer any need to provide the
boilerplate:
if __name__ == '__main__':
unittest.main()
To every test file. It is simply noise.
The pattern remains in test files that aren't named with `test_*` as
those files are not discovered and executed by pytest by default.
703 lines
23 KiB
Python
703 lines
23 KiB
Python
from __future__ import print_function
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from .helper import PillowTestCase, hopper
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from PIL import features
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from PIL._util import py3
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from ctypes import c_float
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import io
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import logging
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import itertools
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import os
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import distutils.version
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from PIL import Image, TiffImagePlugin, TiffTags
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logger = logging.getLogger(__name__)
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class LibTiffTestCase(PillowTestCase):
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def setUp(self):
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if not features.check('libtiff'):
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self.skipTest("tiff support not available")
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def _assert_noerr(self, im):
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"""Helper tests that assert basic sanity about the g4 tiff reading"""
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# 1 bit
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self.assertEqual(im.mode, "1")
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# Does the data actually load
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im.load()
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im.getdata()
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try:
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self.assertEqual(im._compression, 'group4')
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except AttributeError:
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print("No _compression")
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print(dir(im))
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# can we write it back out, in a different form.
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out = self.tempfile("temp.png")
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im.save(out)
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out_bytes = io.BytesIO()
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im.save(out_bytes, format='tiff', compression='group4')
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class TestFileLibTiff(LibTiffTestCase):
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def test_g4_tiff(self):
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"""Test the ordinary file path load path"""
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test_file = "Tests/images/hopper_g4_500.tif"
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im = Image.open(test_file)
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self.assertEqual(im.size, (500, 500))
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self._assert_noerr(im)
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def test_g4_large(self):
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test_file = "Tests/images/pport_g4.tif"
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im = Image.open(test_file)
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self._assert_noerr(im)
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def test_g4_tiff_file(self):
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"""Testing the string load path"""
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test_file = "Tests/images/hopper_g4_500.tif"
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with open(test_file, 'rb') as f:
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im = Image.open(f)
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self.assertEqual(im.size, (500, 500))
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self._assert_noerr(im)
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def test_g4_tiff_bytesio(self):
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"""Testing the stringio loading code path"""
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test_file = "Tests/images/hopper_g4_500.tif"
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s = io.BytesIO()
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with open(test_file, 'rb') as f:
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s.write(f.read())
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s.seek(0)
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im = Image.open(s)
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self.assertEqual(im.size, (500, 500))
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self._assert_noerr(im)
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def test_g4_eq_png(self):
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""" Checking that we're actually getting the data that we expect"""
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png = Image.open('Tests/images/hopper_bw_500.png')
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g4 = Image.open('Tests/images/hopper_g4_500.tif')
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self.assert_image_equal(g4, png)
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# see https://github.com/python-pillow/Pillow/issues/279
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def test_g4_fillorder_eq_png(self):
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""" Checking that we're actually getting the data that we expect"""
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png = Image.open('Tests/images/g4-fillorder-test.png')
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g4 = Image.open('Tests/images/g4-fillorder-test.tif')
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self.assert_image_equal(g4, png)
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def test_g4_write(self):
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"""Checking to see that the saved image is the same as what we wrote"""
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test_file = "Tests/images/hopper_g4_500.tif"
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orig = Image.open(test_file)
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out = self.tempfile("temp.tif")
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rot = orig.transpose(Image.ROTATE_90)
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self.assertEqual(rot.size, (500, 500))
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rot.save(out)
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reread = Image.open(out)
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self.assertEqual(reread.size, (500, 500))
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self._assert_noerr(reread)
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self.assert_image_equal(reread, rot)
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self.assertEqual(reread.info['compression'], 'group4')
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self.assertEqual(reread.info['compression'], orig.info['compression'])
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self.assertNotEqual(orig.tobytes(), reread.tobytes())
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def test_adobe_deflate_tiff(self):
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test_file = "Tests/images/tiff_adobe_deflate.tif"
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im = Image.open(test_file)
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self.assertEqual(im.mode, "RGB")
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self.assertEqual(im.size, (278, 374))
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self.assertEqual(
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im.tile[0][:3], ('tiff_adobe_deflate', (0, 0, 278, 374), 0))
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im.load()
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self.assert_image_equal_tofile(im,
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'Tests/images/tiff_adobe_deflate.png')
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def test_write_metadata(self):
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""" Test metadata writing through libtiff """
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for legacy_api in [False, True]:
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img = Image.open('Tests/images/hopper_g4.tif')
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f = self.tempfile('temp.tiff')
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img.save(f, tiffinfo=img.tag)
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if legacy_api:
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original = img.tag.named()
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else:
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original = img.tag_v2.named()
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# PhotometricInterpretation is set from SAVE_INFO,
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# not the original image.
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ignored = ['StripByteCounts', 'RowsPerStrip', 'PageNumber',
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'PhotometricInterpretation']
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loaded = Image.open(f)
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if legacy_api:
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reloaded = loaded.tag.named()
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else:
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reloaded = loaded.tag_v2.named()
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for tag, value in itertools.chain(reloaded.items(),
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original.items()):
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if tag not in ignored:
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val = original[tag]
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if tag.endswith('Resolution'):
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if legacy_api:
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self.assertEqual(
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c_float(val[0][0] / val[0][1]).value,
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c_float(value[0][0] / value[0][1]).value,
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msg="%s didn't roundtrip" % tag)
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else:
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self.assertEqual(
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c_float(val).value, c_float(value).value,
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msg="%s didn't roundtrip" % tag)
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else:
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self.assertEqual(
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val, value, msg="%s didn't roundtrip" % tag)
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# https://github.com/python-pillow/Pillow/issues/1561
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requested_fields = ['StripByteCounts',
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'RowsPerStrip',
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'StripOffsets']
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for field in requested_fields:
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self.assertIn(field, reloaded, "%s not in metadata" % field)
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def test_additional_metadata(self):
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# these should not crash. Seriously dummy data, most of it doesn't make
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# any sense, so we're running up against limits where we're asking
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# libtiff to do stupid things.
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# Get the list of the ones that we should be able to write
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core_items = {tag: info for tag, info in ((s, TiffTags.lookup(s)) for s
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in TiffTags.LIBTIFF_CORE)
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if info.type is not None}
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# Exclude ones that have special meaning
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# that we're already testing them
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im = Image.open('Tests/images/hopper_g4.tif')
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for tag in im.tag_v2:
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try:
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del core_items[tag]
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except KeyError:
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pass
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# Type codes:
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# 2: "ascii",
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# 3: "short",
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# 4: "long",
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# 5: "rational",
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# 12: "double",
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# Type: dummy value
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values = {2: 'test',
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3: 1,
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4: 2**20,
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5: TiffImagePlugin.IFDRational(100, 1),
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12: 1.05}
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new_ifd = TiffImagePlugin.ImageFileDirectory_v2()
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for tag, info in core_items.items():
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if info.length == 1:
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new_ifd[tag] = values[info.type]
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if info.length == 0:
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new_ifd[tag] = tuple(values[info.type] for _ in range(3))
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else:
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new_ifd[tag] = tuple(values[info.type]
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for _ in range(info.length))
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# Extra samples really doesn't make sense in this application.
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del new_ifd[338]
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out = self.tempfile("temp.tif")
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TiffImagePlugin.WRITE_LIBTIFF = True
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im.save(out, tiffinfo=new_ifd)
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TiffImagePlugin.WRITE_LIBTIFF = False
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def test_custom_metadata(self):
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custom = {
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37000: 4,
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37001: 4.2,
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37002: 'custom tag value',
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37003: u'custom tag value',
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37004: b'custom tag value'
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}
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libtiff_version = TiffImagePlugin._libtiff_version()
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libtiffs = [False]
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if distutils.version.StrictVersion(libtiff_version) >= \
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distutils.version.StrictVersion("4.0"):
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libtiffs.append(True)
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for libtiff in libtiffs:
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TiffImagePlugin.WRITE_LIBTIFF = libtiff
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im = hopper()
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out = self.tempfile("temp.tif")
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im.save(out, tiffinfo=custom)
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TiffImagePlugin.WRITE_LIBTIFF = False
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reloaded = Image.open(out)
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for tag, value in custom.items():
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if libtiff and isinstance(value, bytes):
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value = value.decode()
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self.assertEqual(reloaded.tag_v2[tag], value)
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def test_int_dpi(self):
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# issue #1765
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im = hopper('RGB')
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out = self.tempfile('temp.tif')
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TiffImagePlugin.WRITE_LIBTIFF = True
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im.save(out, dpi=(72, 72))
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TiffImagePlugin.WRITE_LIBTIFF = False
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reloaded = Image.open(out)
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self.assertEqual(reloaded.info['dpi'], (72.0, 72.0))
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def test_g3_compression(self):
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i = Image.open('Tests/images/hopper_g4_500.tif')
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out = self.tempfile("temp.tif")
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i.save(out, compression='group3')
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reread = Image.open(out)
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self.assertEqual(reread.info['compression'], 'group3')
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self.assert_image_equal(reread, i)
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def test_little_endian(self):
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im = Image.open('Tests/images/16bit.deflate.tif')
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self.assertEqual(im.getpixel((0, 0)), 480)
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self.assertEqual(im.mode, 'I;16')
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b = im.tobytes()
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# Bytes are in image native order (little endian)
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if py3:
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self.assertEqual(b[0], ord(b'\xe0'))
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self.assertEqual(b[1], ord(b'\x01'))
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else:
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self.assertEqual(b[0], b'\xe0')
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self.assertEqual(b[1], b'\x01')
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out = self.tempfile("temp.tif")
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# out = "temp.le.tif"
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im.save(out)
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reread = Image.open(out)
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self.assertEqual(reread.info['compression'], im.info['compression'])
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self.assertEqual(reread.getpixel((0, 0)), 480)
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# UNDONE - libtiff defaults to writing in native endian, so
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# on big endian, we'll get back mode = 'I;16B' here.
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def test_big_endian(self):
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im = Image.open('Tests/images/16bit.MM.deflate.tif')
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self.assertEqual(im.getpixel((0, 0)), 480)
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self.assertEqual(im.mode, 'I;16B')
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b = im.tobytes()
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# Bytes are in image native order (big endian)
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if py3:
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self.assertEqual(b[0], ord(b'\x01'))
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self.assertEqual(b[1], ord(b'\xe0'))
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else:
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self.assertEqual(b[0], b'\x01')
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self.assertEqual(b[1], b'\xe0')
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out = self.tempfile("temp.tif")
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im.save(out)
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reread = Image.open(out)
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self.assertEqual(reread.info['compression'], im.info['compression'])
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self.assertEqual(reread.getpixel((0, 0)), 480)
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def test_g4_string_info(self):
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"""Tests String data in info directory"""
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test_file = "Tests/images/hopper_g4_500.tif"
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orig = Image.open(test_file)
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out = self.tempfile("temp.tif")
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orig.tag[269] = 'temp.tif'
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orig.save(out)
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reread = Image.open(out)
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self.assertEqual('temp.tif', reread.tag_v2[269])
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self.assertEqual('temp.tif', reread.tag[269][0])
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def test_12bit_rawmode(self):
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""" Are we generating the same interpretation
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of the image as Imagemagick is? """
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TiffImagePlugin.READ_LIBTIFF = True
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im = Image.open('Tests/images/12bit.cropped.tif')
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im.load()
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TiffImagePlugin.READ_LIBTIFF = False
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# to make the target --
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# convert 12bit.cropped.tif -depth 16 tmp.tif
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# convert tmp.tif -evaluate RightShift 4 12in16bit2.tif
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# imagemagick will auto scale so that a 12bit FFF is 16bit FFF0,
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# so we need to unshift so that the integer values are the same.
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self.assert_image_equal_tofile(im, 'Tests/images/12in16bit.tif')
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def test_blur(self):
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# test case from irc, how to do blur on b/w image
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# and save to compressed tif.
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from PIL import ImageFilter
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out = self.tempfile('temp.tif')
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im = Image.open('Tests/images/pport_g4.tif')
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im = im.convert('L')
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im = im.filter(ImageFilter.GaussianBlur(4))
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im.save(out, compression='tiff_adobe_deflate')
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im2 = Image.open(out)
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im2.load()
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self.assert_image_equal(im, im2)
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def test_compressions(self):
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im = hopper('RGB')
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out = self.tempfile('temp.tif')
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for compression in ('packbits', 'tiff_lzw'):
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im.save(out, compression=compression)
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im2 = Image.open(out)
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self.assert_image_equal(im, im2)
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im.save(out, compression='jpeg')
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im2 = Image.open(out)
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self.assert_image_similar(im, im2, 30)
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def test_cmyk_save(self):
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im = hopper('CMYK')
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out = self.tempfile('temp.tif')
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im.save(out, compression='tiff_adobe_deflate')
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im2 = Image.open(out)
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self.assert_image_equal(im, im2)
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def xtest_bw_compression_w_rgb(self):
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""" This test passes, but when running all tests causes a failure due
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to output on stderr from the error thrown by libtiff. We need to
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capture that but not now"""
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im = hopper('RGB')
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out = self.tempfile('temp.tif')
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self.assertRaises(IOError, im.save, out, compression='tiff_ccitt')
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self.assertRaises(IOError, im.save, out, compression='group3')
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self.assertRaises(IOError, im.save, out, compression='group4')
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def test_fp_leak(self):
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im = Image.open("Tests/images/hopper_g4_500.tif")
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fn = im.fp.fileno()
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os.fstat(fn)
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im.load() # this should close it.
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self.assertRaises(OSError, os.fstat, fn)
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im = None # this should force even more closed.
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self.assertRaises(OSError, os.fstat, fn)
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self.assertRaises(OSError, os.close, fn)
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def test_multipage(self):
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# issue #862
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TiffImagePlugin.READ_LIBTIFF = True
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im = Image.open('Tests/images/multipage.tiff')
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# file is a multipage tiff, 10x10 green, 10x10 red, 20x20 blue
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im.seek(0)
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self.assertEqual(im.size, (10, 10))
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self.assertEqual(im.convert('RGB').getpixel((0, 0)), (0, 128, 0))
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self.assertTrue(im.tag.next)
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im.seek(1)
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self.assertEqual(im.size, (10, 10))
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self.assertEqual(im.convert('RGB').getpixel((0, 0)), (255, 0, 0))
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self.assertTrue(im.tag.next)
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im.seek(2)
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self.assertFalse(im.tag.next)
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self.assertEqual(im.size, (20, 20))
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self.assertEqual(im.convert('RGB').getpixel((0, 0)), (0, 0, 255))
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TiffImagePlugin.READ_LIBTIFF = False
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def test_multipage_nframes(self):
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# issue #862
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TiffImagePlugin.READ_LIBTIFF = True
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im = Image.open('Tests/images/multipage.tiff')
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frames = im.n_frames
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self.assertEqual(frames, 3)
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for _ in range(frames):
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im.seek(0)
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# Should not raise ValueError: I/O operation on closed file
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im.load()
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TiffImagePlugin.READ_LIBTIFF = False
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def test__next(self):
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TiffImagePlugin.READ_LIBTIFF = True
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im = Image.open('Tests/images/hopper.tif')
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self.assertFalse(im.tag.next)
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im.load()
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self.assertFalse(im.tag.next)
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def test_4bit(self):
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# Arrange
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test_file = "Tests/images/hopper_gray_4bpp.tif"
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original = hopper("L")
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# Act
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TiffImagePlugin.READ_LIBTIFF = True
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im = Image.open(test_file)
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TiffImagePlugin.READ_LIBTIFF = False
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# Assert
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self.assertEqual(im.size, (128, 128))
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self.assertEqual(im.mode, "L")
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self.assert_image_similar(im, original, 7.3)
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def test_gray_semibyte_per_pixel(self):
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test_files = (
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(
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24.8, # epsilon
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( # group
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"Tests/images/tiff_gray_2_4_bpp/hopper2.tif",
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"Tests/images/tiff_gray_2_4_bpp/hopper2I.tif",
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"Tests/images/tiff_gray_2_4_bpp/hopper2R.tif",
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"Tests/images/tiff_gray_2_4_bpp/hopper2IR.tif",
|
|
)
|
|
),
|
|
(
|
|
7.3, # epsilon
|
|
( # group
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4I.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4R.tif",
|
|
"Tests/images/tiff_gray_2_4_bpp/hopper4IR.tif",
|
|
)
|
|
),
|
|
)
|
|
original = hopper("L")
|
|
for epsilon, group in test_files:
|
|
im = Image.open(group[0])
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertEqual(im.mode, "L")
|
|
self.assert_image_similar(im, original, epsilon)
|
|
for file in group[1:]:
|
|
im2 = Image.open(file)
|
|
self.assertEqual(im2.size, (128, 128))
|
|
self.assertEqual(im2.mode, "L")
|
|
self.assert_image_equal(im, im2)
|
|
|
|
def test_save_bytesio(self):
|
|
# PR 1011
|
|
# Test TIFF saving to io.BytesIO() object.
|
|
|
|
TiffImagePlugin.WRITE_LIBTIFF = True
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
|
|
# Generate test image
|
|
pilim = hopper()
|
|
|
|
def save_bytesio(compression=None):
|
|
|
|
buffer_io = io.BytesIO()
|
|
pilim.save(buffer_io, format="tiff", compression=compression)
|
|
buffer_io.seek(0)
|
|
|
|
pilim_load = Image.open(buffer_io)
|
|
self.assert_image_similar(pilim, pilim_load, 0)
|
|
|
|
save_bytesio()
|
|
save_bytesio('raw')
|
|
save_bytesio("packbits")
|
|
save_bytesio("tiff_lzw")
|
|
|
|
TiffImagePlugin.WRITE_LIBTIFF = False
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
|
|
def test_crashing_metadata(self):
|
|
# issue 1597
|
|
im = Image.open('Tests/images/rdf.tif')
|
|
out = self.tempfile('temp.tif')
|
|
|
|
TiffImagePlugin.WRITE_LIBTIFF = True
|
|
# this shouldn't crash
|
|
im.save(out, format='TIFF')
|
|
TiffImagePlugin.WRITE_LIBTIFF = False
|
|
|
|
def test_page_number_x_0(self):
|
|
# Issue 973
|
|
# Test TIFF with tag 297 (Page Number) having value of 0 0.
|
|
# The first number is the current page number.
|
|
# The second is the total number of pages, zero means not available.
|
|
outfile = self.tempfile("temp.tif")
|
|
# Created by printing a page in Chrome to PDF, then:
|
|
# /usr/bin/gs -q -sDEVICE=tiffg3 -sOutputFile=total-pages-zero.tif
|
|
# -dNOPAUSE /tmp/test.pdf -c quit
|
|
infile = "Tests/images/total-pages-zero.tif"
|
|
im = Image.open(infile)
|
|
# Should not divide by zero
|
|
im.save(outfile)
|
|
|
|
def test_fd_duplication(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1651
|
|
|
|
tmpfile = self.tempfile("temp.tif")
|
|
with open(tmpfile, 'wb') as f:
|
|
with open("Tests/images/g4-multi.tiff", 'rb') as src:
|
|
f.write(src.read())
|
|
|
|
im = Image.open(tmpfile)
|
|
im.n_frames
|
|
im.close()
|
|
# Should not raise PermissionError.
|
|
os.remove(tmpfile)
|
|
|
|
def test_read_icc(self):
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as img:
|
|
icc = img.info.get('icc_profile')
|
|
self.assertIsNotNone(icc)
|
|
TiffImagePlugin.READ_LIBTIFF = True
|
|
with Image.open("Tests/images/hopper.iccprofile.tif") as img:
|
|
icc_libtiff = img.info.get('icc_profile')
|
|
self.assertIsNotNone(icc_libtiff)
|
|
TiffImagePlugin.READ_LIBTIFF = False
|
|
self.assertEqual(icc, icc_libtiff)
|
|
|
|
def test_multipage_compression(self):
|
|
im = Image.open('Tests/images/compression.tif')
|
|
|
|
im.seek(0)
|
|
self.assertEqual(im._compression, 'tiff_ccitt')
|
|
self.assertEqual(im.size, (10, 10))
|
|
|
|
im.seek(1)
|
|
self.assertEqual(im._compression, 'packbits')
|
|
self.assertEqual(im.size, (10, 10))
|
|
im.load()
|
|
|
|
im.seek(0)
|
|
self.assertEqual(im._compression, 'tiff_ccitt')
|
|
self.assertEqual(im.size, (10, 10))
|
|
im.load()
|
|
|
|
def test_save_tiff_with_jpegtables(self):
|
|
# Arrange
|
|
outfile = self.tempfile("temp.tif")
|
|
|
|
# Created with ImageMagick: convert hopper.jpg hopper_jpg.tif
|
|
# Contains JPEGTables (347) tag
|
|
infile = "Tests/images/hopper_jpg.tif"
|
|
im = Image.open(infile)
|
|
|
|
# Act / Assert
|
|
# Should not raise UnicodeDecodeError or anything else
|
|
im.save(outfile)
|
|
|
|
def test_16bit_RGBa_tiff(self):
|
|
im = Image.open("Tests/images/tiff_16bit_RGBa.tiff")
|
|
|
|
self.assertEqual(im.mode, "RGBA")
|
|
self.assertEqual(im.size, (100, 40))
|
|
self.assertEqual(
|
|
im.tile,
|
|
[('tiff_lzw', (0, 0, 100, 40), 0, ('RGBa;16N', 'tiff_lzw', False))]
|
|
)
|
|
im.load()
|
|
|
|
self.assert_image_equal_tofile(
|
|
im, "Tests/images/tiff_16bit_RGBa_target.png")
|
|
|
|
def test_gimp_tiff(self):
|
|
# Read TIFF JPEG images from GIMP [@PIL168]
|
|
|
|
codecs = dir(Image.core)
|
|
if "jpeg_decoder" not in codecs:
|
|
self.skipTest("jpeg support not available")
|
|
|
|
filename = "Tests/images/pil168.tif"
|
|
im = Image.open(filename)
|
|
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (256, 256))
|
|
self.assertEqual(
|
|
im.tile, [('jpeg', (0, 0, 256, 256), 0, ('RGB', 'jpeg', False))]
|
|
)
|
|
im.load()
|
|
|
|
self.assert_image_equal_tofile(im, "Tests/images/pil168.png")
|
|
|
|
def test_sampleformat(self):
|
|
# https://github.com/python-pillow/Pillow/issues/1466
|
|
im = Image.open("Tests/images/copyleft.tiff")
|
|
self.assertEqual(im.mode, 'RGB')
|
|
|
|
self.assert_image_equal_tofile(im, "Tests/images/copyleft.png",
|
|
mode='RGB')
|
|
|
|
def test_lzw(self):
|
|
im = Image.open("Tests/images/hopper_lzw.tif")
|
|
|
|
self.assertEqual(im.mode, 'RGB')
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertEqual(im.format, "TIFF")
|
|
im2 = hopper()
|
|
self.assert_image_similar(im, im2, 5)
|
|
|
|
def test_strip_cmyk_jpeg(self):
|
|
infile = "Tests/images/tiff_strip_cmyk_jpeg.tif"
|
|
im = Image.open(infile)
|
|
|
|
self.assert_image_similar_tofile(im, "Tests/images/pil_sample_cmyk.jpg", 0.5)
|
|
|
|
def test_strip_ycbcr_jpeg_2x2_sampling(self):
|
|
infile = "Tests/images/tiff_strip_ycbcr_jpeg_2x2_sampling.tif"
|
|
im = Image.open(infile)
|
|
|
|
self.assert_image_similar_tofile(im, "Tests/images/flower.jpg", 0.5)
|
|
|
|
def test_strip_ycbcr_jpeg_1x1_sampling(self):
|
|
infile = "Tests/images/tiff_strip_ycbcr_jpeg_1x1_sampling.tif"
|
|
im = Image.open(infile)
|
|
|
|
self.assert_image_equal_tofile(im, "Tests/images/flower2.jpg")
|
|
|
|
def test_tiled_cmyk_jpeg(self):
|
|
infile = "Tests/images/tiff_tiled_cmyk_jpeg.tif"
|
|
im = Image.open(infile)
|
|
|
|
self.assert_image_similar_tofile(im, "Tests/images/pil_sample_cmyk.jpg", 0.5)
|
|
|
|
def test_tiled_ycbcr_jpeg_1x1_sampling(self):
|
|
infile = "Tests/images/tiff_tiled_ycbcr_jpeg_1x1_sampling.tif"
|
|
im = Image.open(infile)
|
|
|
|
self.assert_image_equal_tofile(im, "Tests/images/flower2.jpg")
|
|
|
|
def test_tiled_ycbcr_jpeg_2x2_sampling(self):
|
|
infile = "Tests/images/tiff_tiled_ycbcr_jpeg_2x2_sampling.tif"
|
|
im = Image.open(infile)
|
|
|
|
self.assert_image_similar_tofile(im, "Tests/images/flower.jpg", 0.5)
|