sometimes tempfile.tempdir is None, so use tempfile.gettempdir() func…

…tion instead (Zulko#633)

* add scipy for py2.7 on travis-ci

* add tests for ffmeg_parse_infos

* put communicate back in

* fix syntax error

* Update test_misc.py

* add scroll test

* remove issue 527/528, this is in another PR

* add tests for colorx, fadein, fadeout

* fix: cv2.CV_AA does not exist error in cv2 version 3

* add headblur example, add opencv dependency

* openvcv only supports 2.7 and 3.4+

* add Exception to ImageSequenceClip when sizes do not match

* add test for ImageSequenceClip

* fix test mains

* fix copy error

* add ImageSequenceClip exception test

* add second image to ImageSequenceClip test

* sometimes tempfile.tempdir is null, so use gettempdir function instead

tests/test_helper.py

@@ -6,7 +6,7 @@
 
 TRAVIS = os.getenv("TRAVIS_PYTHON_VERSION") is not None
 PYTHON_VERSION = "%s.%s" % (sys.version_info.major, sys.version_info.minor)
-TMP_DIR = tempfile.tempdir
+TMP_DIR = tempfile.gettempdir()   # because tempfile.tempdir is sometimes None
 
 # Arbitrary font used in caption testing.
 if sys.platform in ("win32", "cygwin"):