Drop python 2.7 support from a few ports

With hat:	portmgr

57 files changed, 60 insertions, 60 deletions

diff --git a/graphics/curator/Makefile b/graphics/curator/Makefile
index 2f2740f5ce97..124652ebd7b2 100644
--- a/graphics/curator/Makefile
+++ b/graphics/curator/Makefile
@@ -10,7 +10,7 @@ MASTER_SITES=	SF
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Static Image Gallery Generator for web or CD-ROM galleries
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist concurrent optsuffix
 
 PLIST_FILES=	man/man1/curator.1.gz
diff --git a/graphics/mahotas/Makefile b/graphics/mahotas/Makefile
index 62b3059d44d1..21ce67cef477 100644
--- a/graphics/mahotas/Makefile
+++ b/graphics/mahotas/Makefile
@@ -14,7 +14,7 @@ BUILD_DEPENDS=	${PYNUMPY}
 LIB_DEPENDS=	libfreeimage.so:graphics/freeimage
 
 USE_GCC=	yes
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 
 .include <bsd.port.mk>
diff --git a/graphics/opencolorio/Makefile b/graphics/opencolorio/Makefile
index 1708532b88fa..7d32b48fb81b 100644
--- a/graphics/opencolorio/Makefile
+++ b/graphics/opencolorio/Makefile
@@ -56,7 +56,7 @@ EXTRA_PATCHES=	${PATCHDIR}/tools
 .elif defined(OCIO_SLAVE) && ${OCIO_SLAVE} == pymodule
 LIB_DEPENDS=	libOpenImageIO.so:graphics/openimageio \
 		libOpenColorIO.so:graphics/opencolorio
-USES+=		python
+USES+=		python:3.6+
 USE_PYTHON=	flavors
 LDFLAGS+=	-lOpenColorIO
 CMAKE_ON+=	OCIO_BUILD_PYGLUE OCIO_PYGLUE_LINK
@@ -66,7 +66,7 @@ PLIST=		${PKGDIR}/pkg-plist-pyglue
 .else # master port
 LIB_DEPENDS=	libtinyxml.so:textproc/tinyxml \
 		libyaml-cpp03.so:devel/yaml-cpp03
-USES+=		python:build
+USES+=		python:3.6+,build
 USE_LDCONFIG=	yes
 CMAKE_ON+=	OCIO_BUILD_SHARED OCIO_BUILD_PYGLUE
 CMAKE_OFF+=	OCIO_BUILD_APPS
diff --git a/graphics/opencv/Makefile b/graphics/opencv/Makefile
index 1cc021d34868..0a9687256a6a 100644
--- a/graphics/opencv/Makefile
+++ b/graphics/opencv/Makefile
@@ -293,7 +293,7 @@ LIB_DEPENDS+=	libopencv_core.so:graphics/opencv-core \
 		libopencv_ml.so:graphics/opencv
 BUILD_DEPENDS+=	${PYNUMPY}
 RUN_DEPENDS+=	${PYNUMPY}
-USES+=		python
+USES+=		python:3.6+
 USE_PYTHON=	flavors
 CMAKE_ARGS+=	-DBUILD_opencv_python${PYTHON_MAJOR_VER}:BOOL=ON
 . for module in apps java stitching superres videostab
@@ -303,7 +303,7 @@ INSTALL_WRKSRC=	${WRKDIR}/.build/modules/python${PYTHON_MAJOR_VER}
 .elif defined(OCV_JAVA)
 BUILD_DEPENDS+=	ant:devel/apache-ant
 LIB_DEPENDS+=	libopencv_ml.so:graphics/opencv
-USES+=		python:build
+USES+=		python:3.6+,build
 USE_JAVA=	yes
 CMAKE_ARGS+=	-DBUILD_opencv_java:BOOL=ON
 . for module in apps python stitching superres videostab
diff --git a/graphics/openimageio/Makefile b/graphics/openimageio/Makefile
index a25d0bc4d71a..07003a22f976 100644
--- a/graphics/openimageio/Makefile
+++ b/graphics/openimageio/Makefile
@@ -110,7 +110,7 @@ post-patch:
 BUILD_DEPENDS+=	${PREFIX}/share/cmake/pybind11/pybind11Config.cmake:devel/pybind11
 LIB_DEPENDS+=	libOpenImageIO.so:graphics/openimageio
 PLIST=		${PKGDIR}/pkg-plist-pybind
-USES+=		python
+USES+=		python:3.6+
 USE_PYTHON=	flavors
 CMAKE_ON+=	USE_PYTHON
 # we don't need the apps built - only libs.
diff --git a/graphics/openshadinglanguage/Makefile b/graphics/openshadinglanguage/Makefile
index eab06e5cdc09..9cf9eff83c2d 100644
--- a/graphics/openshadinglanguage/Makefile
+++ b/graphics/openshadinglanguage/Makefile
@@ -78,7 +78,7 @@ BUILD_DEPENDS+=	${PREFIX}/share/cmake/pybind11/pybind11Config.cmake:devel/pybind
 LIB_DEPENDS+=	liboslquery.so:graphics/openshadinglanguage
 RUN_DEPENDS+=	${PYTHON_PKGNAMEPREFIX}openimageio>0:graphics/py-openimageio@${PY_FLAVOR}
 PLIST=		${PKGDIR}/pkg-plist-pybind
-USES+=		python
+USES+=		python:3.6+
 USE_PYTHON=	flavors
 CMAKE_ON+=	USE_PYTHON
 CMAKE_ARGS+=	-DPYTHON_VERSION=${PYTHON_VER}
@@ -87,7 +87,7 @@ do-install:
 	${MKDIR} ${STAGEDIR}${PYTHON_SITELIBDIR}
 	${INSTALL_LIB} ${BUILD_WRKSRC}/lib/python/site-packages/oslquery.so ${STAGEDIR}${PYTHON_SITELIBDIR}
 .else # SLAVE_PORT != yes
-USES+=		python:build
+USES+=		python:3.6+,build
 CMAKE_OFF+=	USE_PYTHON
 USE_LDCONFIG=	yes
 .endif # SLAVE_PORT
diff --git a/graphics/piddle/Makefile b/graphics/piddle/Makefile
index ed0e8a7613ee..c834c9e3b6c2 100644
--- a/graphics/piddle/Makefile
+++ b/graphics/piddle/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Graphical Drawing library for Python
 
 LICENSE=	GPLv2+
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 NO_ARCH=	yes
 
diff --git a/graphics/py-PyOpenGL-accelerate/Makefile b/graphics/py-PyOpenGL-accelerate/Makefile
index ef192fc5dd05..6215f340b170 100644
--- a/graphics/py-PyOpenGL-accelerate/Makefile
+++ b/graphics/py-PyOpenGL-accelerate/Makefile
@@ -17,6 +17,6 @@ BUILD_DEPENDS=	${PYNUMPY}
 RUN_DEPENDS=	${PYNUMPY}
 
 USE_PYTHON=	autoplist distutils cython
-USES=		python
+USES=		python:3.6+
 
 .include <bsd.port.mk>
diff --git a/graphics/py-PyOpenGL/Makefile b/graphics/py-PyOpenGL/Makefile
index 9038905afd63..b579434e695a 100644
--- a/graphics/py-PyOpenGL/Makefile
+++ b/graphics/py-PyOpenGL/Makefile
@@ -20,7 +20,7 @@ OPTIONS_DEFINE=	TKINTER
 OPTIONS_DEFAULT=	TKINTER
 TKINTER_DESC=	Build with tkinter for X support
 
-USES=		dos2unix gl python
+USES=		dos2unix gl python:3.6+
 USE_GL=		glut
 USE_PYTHON=	distutils autoplist
 
diff --git a/graphics/py-beziers/Makefile b/graphics/py-beziers/Makefile
index d8262df86acc..58462ce50f54 100644
--- a/graphics/py-beziers/Makefile
+++ b/graphics/py-beziers/Makefile
@@ -14,7 +14,7 @@ LICENSE=	MIT
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pyclipper>=0:math/py-pyclipper@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-cartopy/Makefile b/graphics/py-cartopy/Makefile
index 2c100504cae1..7056667a3fa9 100644
--- a/graphics/py-cartopy/Makefile
+++ b/graphics/py-cartopy/Makefile
@@ -25,7 +25,7 @@ RUN_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}Shapely>=1.5.6:devel/py-shapely@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}six>=1.3.0:devel/py-six@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent cython distutils
 
 CPPFLAGS+=	-DACCEPT_USE_OF_DEPRECATED_PROJ_API_H
diff --git a/graphics/py-colour/Makefile b/graphics/py-colour/Makefile
index e68b07dbe4fa..a31378c53de6 100644
--- a/graphics/py-colour/Makefile
+++ b/graphics/py-colour/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}d2to1>0:devel/py-d2to1@${PY_FLAVOR}
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}nose>0:devel/py-nose@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-djvulibre/Makefile b/graphics/py-djvulibre/Makefile
index 9807269ee93d..226f1045c5d4 100644
--- a/graphics/py-djvulibre/Makefile
+++ b/graphics/py-djvulibre/Makefile
@@ -14,7 +14,7 @@ LICENSE=	GPLv2
 
 LIB_DEPENDS=	libdjvulibre.so:graphics/djvulibre
 
-USES=		python pkgconfig
+USES=		python:3.6+ pkgconfig
 USE_PYTHON=	autoplist distutils cython
 
 post-patch:
diff --git a/graphics/py-exifread/Makefile b/graphics/py-exifread/Makefile
index 3e8ac99e9ce0..7ad5216fbcee 100644
--- a/graphics/py-exifread/Makefile
+++ b/graphics/py-exifread/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Read Exif metadata from tiff and jpeg files
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 .include <bsd.port.mk>
diff --git a/graphics/py-face_recognition/Makefile b/graphics/py-face_recognition/Makefile
index ac7e2a035f4b..6c6439a32feb 100644
--- a/graphics/py-face_recognition/Makefile
+++ b/graphics/py-face_recognition/Makefile
@@ -20,7 +20,7 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}click>=6.0:devel/py-click@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}dlib>=19.7:science/py-dlib@${PY_FLAVOR} \
 		${PY_PILLOW}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-face_recognition_models/Makefile b/graphics/py-face_recognition_models/Makefile
index 9c80761b027c..60dce3bcbec9 100644
--- a/graphics/py-face_recognition_models/Makefile
+++ b/graphics/py-face_recognition_models/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Models used by the face_recognition package
 LICENSE=	CC0-1.0
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-fiona/Makefile b/graphics/py-fiona/Makefile
index 55710d181b1a..d12a40d5d2c3 100644
--- a/graphics/py-fiona/Makefile
+++ b/graphics/py-fiona/Makefile
@@ -21,7 +21,7 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cligj>=0.4:devel/py-cligj@${PY_FLAVOR} \
 		${PY_ENUM34}
 LIB_DEPENDS+=	libgdal.so:graphics/gdal
 
-USES=		compiler:c++11-lang python
+USES=		compiler:c++11-lang python:3.6+
 USE_PYTHON=	autoplist distutils cython
 
 post-install:
diff --git a/graphics/py-freeimagepy/Makefile b/graphics/py-freeimagepy/Makefile
index d086b475d963..8a961879823e 100644
--- a/graphics/py-freeimagepy/Makefile
+++ b/graphics/py-freeimagepy/Makefile
@@ -15,7 +15,7 @@ COMMENT=	FreeImage library python wrapper
 LIB_DEPENDS=	libfreeimage.so:graphics/freeimage
 
 WRKSRC=		${WRKDIR}/FreeImagePy-${PORTVERSION}
-USES=		python shebangfix tar:bzip2
+USES=		python:3.6+ shebangfix tar:bzip2
 USE_PYTHON=	distutils autoplist
 NO_ARCH=	yes
 SHEBANG_FILES=	FreeImagePy/*.py
diff --git a/graphics/py-gdal/Makefile b/graphics/py-gdal/Makefile
index 3ec15cc50735..34a3d9e0fd81 100644
--- a/graphics/py-gdal/Makefile
+++ b/graphics/py-gdal/Makefile
@@ -19,7 +19,7 @@ LIB_DEPENDS=	libgdal.so:graphics/gdal
 OPTIONS_DEFINE=	NUMPY
 NUMPY_DESC=	Enable array support via NumPy
 
-USES=		compiler:c++11-lang python shebangfix tar:xz
+USES=		compiler:c++11-lang python:3.6+ shebangfix tar:xz
 USE_PYTHON=	autoplist concurrent distutils
 
 USE_CXXSTD=	c++11
diff --git a/graphics/py-glfw/Makefile b/graphics/py-glfw/Makefile
index 14a75865fc84..a0190c9dbab7 100644
--- a/graphics/py-glfw/Makefile
+++ b/graphics/py-glfw/Makefile
@@ -14,7 +14,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 LIB_DEPENDS=	libglfw.so:graphics/glfw
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-gphoto2/Makefile b/graphics/py-gphoto2/Makefile
index 5eca346ef592..dff5fb110e1c 100644
--- a/graphics/py-gphoto2/Makefile
+++ b/graphics/py-gphoto2/Makefile
@@ -15,7 +15,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 LIB_DEPENDS=	libgphoto2.so:graphics/libgphoto2
 
-USES=		compiler pkgconfig python shebangfix
+USES=		compiler pkgconfig python:3.6+ shebangfix
 USE_PYTHON=	autoplist concurrent distutils
 SHEBANG_FILES=	examples/*.py
 
diff --git a/graphics/py-graph-core/Makefile b/graphics/py-graph-core/Makefile
index 7725228d4ac1..7c7c5a5ce284 100644
--- a/graphics/py-graph-core/Makefile
+++ b/graphics/py-graph-core/Makefile
@@ -14,7 +14,7 @@ COMMENT=	Library for working with graphs in Python, core module
 
 LICENSE=	MIT
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 
 .include <bsd.port.mk>
diff --git a/graphics/py-graphviz/Makefile b/graphics/py-graphviz/Makefile
index fdb7556daa06..940b6c44e9e8 100644
--- a/graphics/py-graphviz/Makefile
+++ b/graphics/py-graphviz/Makefile
@@ -17,7 +17,7 @@ RUN_DEPENDS=	dot:graphics/graphviz
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest-cov>=0:devel/py-pytest-cov@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pytest-mock>=0:devel/py-pytest-mock@${PY_FLAVOR}
 
-USES=		python zip
+USES=		python:3.6+ zip
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-graphy/Makefile b/graphics/py-graphy/Makefile
index 9f41a1467734..d4d1433c3c2e 100644
--- a/graphics/py-graphy/Makefile
+++ b/graphics/py-graphy/Makefile
@@ -14,7 +14,7 @@ COMMENT=	Simple chart library for Python
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-USES=		python:run tar:bzip2
+USES=		python:3.6+,run tar:bzip2
 USE_PYTHON=	flavors
 
 PORTDOCS=	README
diff --git a/graphics/py-gvgen/Makefile b/graphics/py-gvgen/Makefile
index b741f8956271..519198d9b104 100644
--- a/graphics/py-gvgen/Makefile
+++ b/graphics/py-gvgen/Makefile
@@ -12,7 +12,7 @@ COMMENT=	Easy python interface to generate dot files
 
 LICENSE=	GPLv2
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 USE_GITHUB=	yes
 GH_ACCOUNT=	stricaud
diff --git a/graphics/py-h3/Makefile b/graphics/py-h3/Makefile
index 83b9d312ebc3..dd6a04fb029d 100644
--- a/graphics/py-h3/Makefile
+++ b/graphics/py-h3/Makefile
@@ -21,7 +21,7 @@ LIB_DEPENDS=	libh3.so:graphics/h3
 TEST_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}pytest>=0:devel/py-pytest@${PY_FLAVOR}
 
-USES=		localbase:ldflags python
+USES=		localbase:ldflags python:3.6+
 USE_PYTHON=	autoplist concurrent cython distutils
 
 CFLAGS+=	-I${LOCALBASE}/include/h3
diff --git a/graphics/py-imageio24/Makefile b/graphics/py-imageio24/Makefile
index ebfddefd01e9..143f347b6d22 100644
--- a/graphics/py-imageio24/Makefile
+++ b/graphics/py-imageio24/Makefile
@@ -24,7 +24,7 @@ RUN_DEPENDS=	ffmpeg:multimedia/ffmpeg \
 		${PY_PILLOW} \
 		${PYNUMPY}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils concurrent autoplist
 
 NO_ARCH=	yes
diff --git a/graphics/py-leather/Makefile b/graphics/py-leather/Makefile
index 0b52154568dd..d3d63fd892ed 100644
--- a/graphics/py-leather/Makefile
+++ b/graphics/py-leather/Makefile
@@ -13,7 +13,7 @@ LICENSE=	MIT
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}six>=1.6.1:devel/py-six@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-ming/Makefile b/graphics/py-ming/Makefile
index c52d1d187176..e3e33893d757 100644
--- a/graphics/py-ming/Makefile
+++ b/graphics/py-ming/Makefile
@@ -26,7 +26,7 @@ CONFIGURE_ARGS=	--enable-python
 CONFIGURE_ENV=	PYTHON_LDFLAGS="-L${PYTHON_LIBDIR} -l${PYTHON_VERSION}${PYTHON_ABIVER}"
 GNU_CONFIGURE=	yes
 USE_PYTHON=	autoplist concurrent distutils
-USES=		autoreconf libtool localbase:ldflags python
+USES=		autoreconf libtool localbase:ldflags python:3.6+
 
 BUILD_WRKSRC=	${WRKSRC}/py_ext
 INSTALL_WRKSRC=	${WRKSRC}/py_ext
diff --git a/graphics/py-open3d-python/Makefile b/graphics/py-open3d-python/Makefile
index 2cfb7b720280..e619dbc6c372 100644
--- a/graphics/py-open3d-python/Makefile
+++ b/graphics/py-open3d-python/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/../LICENSE
 LIB_DEPENDS=	libOpen3D.so:graphics/open3d
 
 USES=		cmake compiler:c++11-lang eigen:3 fortran localbase:ldflags \
-		pkgconfig python
+		pkgconfig python:3.6+
 USE_GITHUB=	yes
 GH_ACCOUNT=	IntelVCL
 GH_PROJECT=	Open3D
diff --git a/graphics/py-photocollage/Makefile b/graphics/py-photocollage/Makefile
index d2e2c251edbb..0519905671fa 100644
--- a/graphics/py-photocollage/Makefile
+++ b/graphics/py-photocollage/Makefile
@@ -17,7 +17,7 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cairo>0:graphics/py-cairo@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}six>:devel/py-six@${PY_FLAVOR} \
 		${PY_PILLOW}
 
-USES=		gettext-tools python
+USES=		gettext-tools python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 NO_ARCH=	yes
 
diff --git a/graphics/py-piexif/Makefile b/graphics/py-piexif/Makefile
index 9c5ec58db1ec..831abc7e9dd4 100644
--- a/graphics/py-piexif/Makefile
+++ b/graphics/py-piexif/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Simplify exif manipulations with Python
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
-USES=		python zip
+USES=		python:3.6+ zip
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-pivy/Makefile b/graphics/py-pivy/Makefile
index 59a26adcf258..2f14387147cc 100644
--- a/graphics/py-pivy/Makefile
+++ b/graphics/py-pivy/Makefile
@@ -16,7 +16,7 @@ BUILD_DEPENDS=	cmake:devel/cmake \
 LIB_DEPENDS=	libCoin.so:graphics/Coin \
 		libSoQt.so:x11-toolkits/soqt
 
-USES=		compiler:c11 python qt:5
+USES=		compiler:c11 python:3.6+ qt:5
 USE_GITHUB=	yes
 GH_ACCOUNT=	coin3d
 USE_PYTHON=	autoplist distutils
diff --git a/graphics/py-plotly/Makefile b/graphics/py-plotly/Makefile
index d19dc2976eff..a0ebbfc4f29f 100644
--- a/graphics/py-plotly/Makefile
+++ b/graphics/py-plotly/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}six>0:devel/py-six@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}retrying>0:devel/py-retrying@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 
 NO_ARCH=	yes
diff --git a/graphics/py-png/Makefile b/graphics/py-png/Makefile
index 01e147a84f27..34d536e2523e 100644
--- a/graphics/py-png/Makefile
+++ b/graphics/py-png/Makefile
@@ -14,7 +14,7 @@ COMMENT=	Python PNG encoder/decoder
 LICENSE=	MIT
 
 NO_ARCH=	yes
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 
 .include <bsd.port.mk>
diff --git a/graphics/py-pycha/Makefile b/graphics/py-pycha/Makefile
index 7778d14ed262..b059a1e6b262 100644
--- a/graphics/py-pycha/Makefile
+++ b/graphics/py-pycha/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/COPYING
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}six>=0:devel/py-six@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-pycollada/Makefile b/graphics/py-pycollada/Makefile
index 8893e3b61658..68487165b206 100644
--- a/graphics/py-pycollada/Makefile
+++ b/graphics/py-pycollada/Makefile
@@ -16,7 +16,7 @@ RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}numpy>0:math/py-numpy@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}dateutil>=2.0:devel/py-dateutil@${PY_FLAVOR}
 
 NO_ARCH=	yes
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 OPTIONS_DEFINE=	LXML
diff --git a/graphics/py-pydot/Makefile b/graphics/py-pydot/Makefile
index f644e21e8009..6e749f886587 100644
--- a/graphics/py-pydot/Makefile
+++ b/graphics/py-pydot/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 RUN_DEPENDS=	dot:graphics/graphviz \
 		${PYTHON_PKGNAMEPREFIX}pyparsing>=2.1.4:devel/py-pyparsing@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-pyepsg/Makefile b/graphics/py-pyepsg/Makefile
index bfff785ae6b1..7b604653102d 100644
--- a/graphics/py-pyepsg/Makefile
+++ b/graphics/py-pyepsg/Makefile
@@ -15,7 +15,7 @@ LICENSE_FILE=	${WRKSRC}/COPYING.LESSER
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}requests>=0:www/py-requests@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-pygal/Makefile b/graphics/py-pygal/Makefile
index 89ed80fc94a7..a61ffc7f6142 100644
--- a/graphics/py-pygal/Makefile
+++ b/graphics/py-pygal/Makefile
@@ -15,7 +15,7 @@ LICENSE=	LGPL3
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest-runner>0:devel/py-pytest-runner@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}lxml>=3.3.4:devel/py-lxml@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-pyganim/Makefile b/graphics/py-pyganim/Makefile
index af793fca8d5f..6e852ae8dcd1 100644
--- a/graphics/py-pyganim/Makefile
+++ b/graphics/py-pyganim/Makefile
@@ -16,7 +16,7 @@ LICENSE=	BSD2CLAUSE
 
 RUN_DEPENDS=	${PYGAME}
 
-USES=		python zip
+USES=		python:3.6+ zip
 USE_PYTHON=	autoplist concurrent distutils
 NO_ARCH=	yes
 
diff --git a/graphics/py-pyinsane2/Makefile b/graphics/py-pyinsane2/Makefile
index 3c879f9b661a..8c9f73dcece3 100644
--- a/graphics/py-pyinsane2/Makefile
+++ b/graphics/py-pyinsane2/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}nose>=1.0:devel/py-nose@${PY_FLAVOR}
 RUN_DEPENDS=	${PY_PILLOW}
 
-USES=		gmake python
+USES=		gmake python:3.6+
 USE_PYTHON=	distutils autoplist
 NO_ARCH=	yes
 
diff --git a/graphics/py-pymaging-png/Makefile b/graphics/py-pymaging-png/Makefile
index d7167289781f..eadc7564bf30 100644
--- a/graphics/py-pymaging-png/Makefile
+++ b/graphics/py-pymaging-png/Makefile
@@ -15,7 +15,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pymaging>=g20130908:graphics/py-pymaging@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 USE_GITHUB=	yes
diff --git a/graphics/py-pymaging/Makefile b/graphics/py-pymaging/Makefile
index dccba6e62162..ba06ce18ff1a 100644
--- a/graphics/py-pymaging/Makefile
+++ b/graphics/py-pymaging/Makefile
@@ -12,7 +12,7 @@ COMMENT=	Pure Python imaging library
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 USE_GITHUB=	yes
diff --git a/graphics/py-pypillowfight/Makefile b/graphics/py-pypillowfight/Makefile
index 3dd129e6ac9c..7750031acb95 100644
--- a/graphics/py-pypillowfight/Makefile
+++ b/graphics/py-pypillowfight/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}nose>=1.0:devel/py-nose@${PY_FLAVOR}
 RUN_DEPENDS=	${PY_PILLOW}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 
 .include <bsd.port.mk>
diff --git a/graphics/py-pyqrcode/Makefile b/graphics/py-pyqrcode/Makefile
index 70d53cc89424..c7614d0d5f66 100644
--- a/graphics/py-pyqrcode/Makefile
+++ b/graphics/py-pyqrcode/Makefile
@@ -13,7 +13,7 @@ LICENSE_FILE=	${WRKSRC}/License
 
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}nose>0:devel/py-nose@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_GITHUB=	yes # LICENSE_FILE/tests not packaged in sdist
 USE_PYTHON=	autoplist distutils
 
diff --git a/graphics/py-pyqtgraph/Makefile b/graphics/py-pyqtgraph/Makefile
index 8fa0e23c270a..5bbd7c65e001 100644
--- a/graphics/py-pyqtgraph/Makefile
+++ b/graphics/py-pyqtgraph/Makefile
@@ -14,7 +14,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 RUN_DEPENDS=	${PYNUMPY}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 NO_ARCH=	yes
 
diff --git a/graphics/py-pyvips/Makefile b/graphics/py-pyvips/Makefile
index e0183335db93..29c7a9555eee 100644
--- a/graphics/py-pyvips/Makefile
+++ b/graphics/py-pyvips/Makefile
@@ -18,7 +18,7 @@ BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest-runner>=2.0.0:devel/py-pytest-runne
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}cffi>=1.13:devel/py-cffi@${PY_FLAVOR}
 LIB_DEPENDS=	libvips.so:graphics/vips
 
-USES=		gnome pkgconfig python
+USES=		gnome pkgconfig python:3.6+
 
 USE_GNOME=	glib20
 USE_PYTHON=	distutils autoplist
diff --git a/graphics/py-rasterio/Makefile b/graphics/py-rasterio/Makefile
index ba4753a1d33a..048b902f8f95 100644
--- a/graphics/py-rasterio/Makefile
+++ b/graphics/py-rasterio/Makefile
@@ -25,7 +25,7 @@ RUN_DEPENDS=	gdal>=1.11:graphics/gdal \
 		${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}snuggs>=1.4.1:math/py-snuggs@${PY_FLAVOR}
 
-USES=		compiler:c++11-lang python
+USES=		compiler:c++11-lang python:3.6+
 USE_PYTHON=	autoplist concurrent cython distutils
 
 OPTIONS_DEFINE=	PLOT S3
diff --git a/graphics/py-rawkit/Makefile b/graphics/py-rawkit/Makefile
index 0d7cf7b58e90..82d3017061c0 100644
--- a/graphics/py-rawkit/Makefile
+++ b/graphics/py-rawkit/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Ctypes based libraw bindings
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-spectra/Makefile b/graphics/py-spectra/Makefile
index f95d3ffee9e8..9696a23d257d 100644
--- a/graphics/py-spectra/Makefile
+++ b/graphics/py-spectra/Makefile
@@ -14,7 +14,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}nose>0:devel/py-nose@${PY_FLAVOR}
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-svg.path/Makefile b/graphics/py-svg.path/Makefile
index 379b1a029ebf..d4c7ab92cf76 100644
--- a/graphics/py-svg.path/Makefile
+++ b/graphics/py-svg.path/Makefile
@@ -13,7 +13,7 @@ COMMENT=	SVG path objects and parser
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-svgwrite/Makefile b/graphics/py-svgwrite/Makefile
index 230b03e6bf5c..91361bff8128 100644
--- a/graphics/py-svgwrite/Makefile
+++ b/graphics/py-svgwrite/Makefile
@@ -13,7 +13,7 @@ LICENSE=	MIT
 
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pyparsing>=0:devel/py-pyparsing@${PY_FLAVOR}
 
-USES=		python zip
+USES=		python:3.6+ zip
 USE_PYTHON=	autoplist distutils
 
 PORTEXAMPLES=	*
diff --git a/graphics/py-utm/Makefile b/graphics/py-utm/Makefile
index 7df12f549c3a..a01450ae492e 100644
--- a/graphics/py-utm/Makefile
+++ b/graphics/py-utm/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Bidirectional UTM-WGS84 converter for Python
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-wand/Makefile b/graphics/py-wand/Makefile
index f6e2ca20d16a..5843400ad25f 100644
--- a/graphics/py-wand/Makefile
+++ b/graphics/py-wand/Makefile
@@ -14,7 +14,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libMagickWand-6.so:graphics/ImageMagick6
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	autoplist concurrent distutils
 
 NO_ARCH=	yes
diff --git a/graphics/py-webcolors/Makefile b/graphics/py-webcolors/Makefile
index 865120456431..ed9fcf2fa74b 100644
--- a/graphics/py-webcolors/Makefile
+++ b/graphics/py-webcolors/Makefile
@@ -13,7 +13,7 @@ COMMENT=	Library working with the sRGB color space as used in the HTML and CSS
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-USES=		python
+USES=		python:3.6+
 USE_PYTHON=	distutils autoplist
 NO_ARCH=	yes
 
diff --git a/graphics/py-zbar-py/Makefile b/graphics/py-zbar-py/Makefile
index b95dab4db88e..edddea75fcf0 100644
--- a/graphics/py-zbar-py/Makefile
+++ b/graphics/py-zbar-py/Makefile
@@ -16,7 +16,7 @@ LICENSE_FILE=	${WRKSRC}/LICENSE
 LIB_DEPENDS=	libzbar.so:graphics/zbar
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}numpy>0:math/py-numpy@${PY_FLAVOR}
 
-USES=		iconv:wchar_t python
+USES=		iconv:wchar_t python:3.6+
 USE_PYTHON=	autoplist distutils
 
 post-install: