tests: extend multipackage test to include numpy

Testing with numpy is rather heavy-weight, but it is a sure to
reveal any problems. For example, mishandling of extensions that
are embedded in package sub-directories.

tests/functional/specs/multipackage-scripts/multipackage1_B.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/multipackage2_B.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/multipackage3_B.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/multipackage4_B.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/multipackage5_B.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/multipackage5_C.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/test_multipackage1.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/test_multipackage2.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/test_multipackage3.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/test_multipackage4.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/specs/multipackage-scripts/test_multipackage5.py

@@ -26,3 +26,7 @@
     secret = fp.read().strip()
 print("Read secret from %s: %r" % (secret_file, secret))
 assert secret == 'Secret1234'
+
+# import numpy, which has several extensions in its package subdirectories
+import numpy  # noqa: E402, F401
+print("Imported numpy!")

tests/functional/test_multipackage.py

@@ -1,6 +1,9 @@
 import pytest
 
+from PyInstaller.utils.tests import importorskip
 
+
+@importorskip('numpy')
 @pytest.mark.parametrize(
     "spec_file",
     (