Use pytest.importorskip to skip on a missing import dependency

Tests/test_file_fpx.py

@@ -1,15 +1,8 @@
 import pytest
 from PIL import Image
 
-try:
+FpxImagePlugin = pytest.importorskip(
-    from PIL import FpxImagePlugin
+    "PIL.FpxImagePlugin", reason="olefile not installed"
-except ImportError:
-    olefile_installed = False
-else:
-    olefile_installed = True
-
-pytestmark = pytest.mark.skipif(
-    not olefile_installed, reason="olefile package not installed"
 )
 
 

Tests/test_file_mic.py

@@ -3,22 +3,17 @@ from PIL import Image, ImagePalette, features
 
 from .helper import assert_image_similar, hopper
 
-try:
+MicImagePlugin = pytest.importorskip(
-    from PIL import MicImagePlugin
+    "PIL.MicImagePlugin", reason="olefile not installed"
-except ImportError:
+)
-    olefile_installed = False
+
-else:
+pytestmark = pytest.mark.skipif(
-    olefile_installed = True
+    not features.check("libtiff"), reason="libtiff not installed"
+)
 
 TEST_FILE = "Tests/images/hopper.mic"
 
 
-pytestmark = [
-    pytest.mark.skipif(not olefile_installed, reason="olefile package not installed"),
-    pytest.mark.skipif(not features.check("libtiff"), reason="libtiff not installed"),
-]
-
-
 def test_sanity():
     with Image.open(TEST_FILE) as im:
         im.load()

Tests/test_file_webp_alpha.py

@@ -1,16 +1,11 @@
-import unittest
+import pytest
-
 from PIL import Image
 
 from .helper import PillowTestCase, assert_image_equal, assert_image_similar, hopper
 
-try:
+_webp = pytest.importorskip("PIL._webp", reason="WebP support not installed")
-    from PIL import _webp
-except ImportError:
-    _webp = None
 
 
-@unittest.skipIf(_webp is None, "WebP support not installed")
 class TestFileWebpAlpha(PillowTestCase):
     def setUp(self):
         if _webp.WebPDecoderBuggyAlpha(self):

Tests/test_file_webp_animated.py

@@ -9,20 +9,11 @@ from .helper import (
     on_ci,
 )
 
-try:
+_webp = pytest.importorskip("PIL._webp", reason="WebP support not installed")
-    from PIL import _webp
-
-    HAVE_WEBP = True
-except ImportError:
-    HAVE_WEBP = False
 
 
 class TestFileWebpAnimation(PillowTestCase):
     def setUp(self):
-        if not HAVE_WEBP:
-            self.skipTest("WebP support not installed")
-            return
-
         if not _webp.HAVE_WEBPANIM:
             self.skipTest(
                 "WebP library does not contain animation support, "

Tests/test_file_webp_lossless.py

@@ -1,21 +1,13 @@
+import pytest
 from PIL import Image
 
 from .helper import PillowTestCase, assert_image_equal, hopper
 
-try:
+_webp = pytest.importorskip("PIL._webp", reason="WebP support not installed")
-    from PIL import _webp
-
-    HAVE_WEBP = True
-except ImportError:
-    HAVE_WEBP = False
 
 
 class TestFileWebpLossless(PillowTestCase):
     def setUp(self):
-        if not HAVE_WEBP:
-            self.skipTest("WebP support not installed")
-            return
-
         if _webp.WebPDecoderVersion() < 0x0200:
             self.skipTest("lossless not included")
 

Tests/test_file_webp_metadata.py

@@ -1,23 +1,15 @@
 from io import BytesIO
 
+import pytest
 from PIL import Image
 
 from .helper import PillowTestCase
 
-try:
+_webp = pytest.importorskip("PIL._webp", reason="WebP support not installed")
-    from PIL import _webp
-
-    HAVE_WEBP = True
-except ImportError:
-    HAVE_WEBP = False
 
 
 class TestFileWebpMetadata(PillowTestCase):
     def setUp(self):
-        if not HAVE_WEBP:
-            self.skipTest("WebP support not installed")
-            return
-
         if not _webp.HAVE_WEBPMUX:
             self.skipTest("WebPMux support not installed")
 

Tests/test_map.py

@@ -5,11 +5,6 @@ from PIL import Image
 
 from .helper import is_win32
 
-try:
-    import numpy
-except ImportError:
-    numpy = None
-
 pytestmark = pytest.mark.skipif(is_win32(), reason="Win32 does not call map_buffer")
 
 
@@ -32,8 +27,9 @@ def test_overflow():
 
 
 @pytest.mark.skipif(sys.maxsize <= 2 ** 32, reason="Requires 64-bit system")
-@pytest.mark.skipif(numpy is None, reason="NumPy is not installed")
 def test_ysize():
+    numpy = pytest.importorskip("numpy", reason="NumPy not installed")
+
     # Should not raise 'Integer overflow in ysize'
     arr = numpy.zeros((46341, 46341), dtype=numpy.uint8)
     Image.fromarray(arr)

Tests/test_numpy.py

@@ -3,18 +3,11 @@ from PIL import Image
 
 from .helper import assert_deep_equal, assert_image, hopper
 
-try:
+numpy = pytest.importorskip("numpy", reason="NumPy not installed")
-    import numpy
-except ImportError:
-    numpy = None
-
 
 TEST_IMAGE_SIZE = (10, 10)
 
 
-pytestmark = pytest.mark.skipif(numpy is None, reason="NumPy is not installed")
-
-
 def test_numpy_to_image():
     def to_image(dtype, bands=1, boolean=0):
         if bands == 1:

Tests/test_pyroma.py

@@ -1,13 +1,9 @@
 import pytest
 from PIL import __version__
 
-try:
+pyroma = pytest.importorskip("pyroma", reason="Pyroma not installed")
-    import pyroma
-except ImportError:
-    pyroma = None
 
 
-@pytest.mark.skipif(pyroma is None, reason="Pyroma is not installed")
 def test_pyroma():
     # Arrange
     data = pyroma.projectdata.get_data(".")