Trying out Kivy

[Cecil Westerhof]

On Friday 13 Nov 2015 21:10 CET, Cecil Westerhof wrote:

> On Friday 13 Nov 2015 20:53 CET, Michael Torrie wrote:
>
>> On 11/13/2015 11:30 AM, Cecil Westerhof wrote:
>>> On Friday 13 Nov 2015 18:21 CET, Michael Torrie wrote:
>>>
>>>> On 11/13/2015 09:33 AM, Cecil Westerhof wrote:
>>>>> I tried to install pygame and PIL with pip3, but that did not
>>>>> find anything.
>>>>
>>>> The replacement for PIL is called Pillow. I'm not sure if it's a
>>>> drop-in replacement or not. If it's not, then you'd have to
>>>> modify Kivy to import from Pillow. Pillow does support Python3.
>>>
>>> After installing Pillow the error about PIL disappeared, but I got
>>> new errors about bcm and x11.
>>
>> Traceback?
>
> Purge log fired. Analysing... Purge finished! [INFO ] [Logger ]
> Record log in /home/cecil/.kivy/logs/kivy_15-11-13_28.txt [INFO ]
> [Kivy ] v1.9.0 [INFO ] [Python ] v3.4.1 (default, May 23 2014,
> 17:48:28) [GCC] [INFO ] [Factory ] 173 symbols loaded [INFO ] [Image
> ] Providers: img_tex, img_dds, img_gif, img_pil (img_pygame,
> img_ffpyplayer ignored) [INFO ] [Text ] Provider:
> pil(['text_pygame'] ignored) [CRITICAL ] [Window ] Unable to find
> any valuable Window provider at all! egl_rpi - ImportError: cannot
> import name 'bcm' File
> "/usr/lib64/python3.4/site-packages/kivy/core/__init__.py", line 57,
> in core_select_lib fromlist=[modulename], level=0) File
> "/usr/lib64/python3.4/site-packages/kivy/core/window/window_egl_rpi.py",
> line 12, in <module> from kivy.lib.vidcore_lite import bcm, egl
>
> pygame - ImportError: No module named 'pygame' File
> "/usr/lib64/python3.4/site-packages/kivy/core/__init__.py", line 57,
> in core_select_lib fromlist=[modulename], level=0) File
> "/usr/lib64/python3.4/site-packages/kivy/core/window/window_pygame.py",
> line 8, in <module> import pygame
>
> x11 - ImportError: No module named 'kivy.core.window.window_x11'
> File "/usr/lib64/python3.4/site-packages/kivy/core/__init__.py",
> line 57, in core_select_lib fromlist=[modulename], level=0)
>
> [CRITICAL ] [App ] Unable to get a Window, abort. Exception ignored
> in: 'kivy.properties.dpi2px' Traceback (most recent call last): File
> "/usr/lib64/python3.4/site-packages/kivy/utils.py", line 360, in
> __get__ retval = self.func(inst) File
> "/usr/lib64/python3.4/site-packages/kivy/metrics.py", line 169, in
> dpi EventLoop.ensure_window() File
> "/usr/lib64/python3.4/site-packages/kivy/base.py", line 126, in
> ensure_window sys.exit(1) SystemExit: 1 [CRITICAL ] [App ] Unable to
> get a Window, abort.
>
>
> I see a difference with python2. (Did not notice it before.) With
> python3 v1.9.0 is installed, but with python2 v1.8.0.
> [INFO              ] Kivy v1.8.0
>
> Maybe that is the problem?

I tried to install v1.8.0 with:
    pip3 install -I kivy==1.8.0

But that gives:
    building 'kivy.graphics.shader' extension

    gcc -pthread -Wno-unused-result -Werror=declaration-after-statement -DNDEBUG -fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -DOPENSSL_LOAD_CONF -fPIC -I/usr/include/python3.4m -c /tmp/pip_build_root/kivy/kivy/graphics/shader.c -o build/temp.linux-x86_64-3.4/tmp/pip_build_root/kivy/kivy/graphics/shader.o

    /tmp/pip_build_root/kivy/kivy/graphics/shader.c:1:2: error: #error Do not use this file, it is the result of a failed Cython compilation.

     #error Do not use this file, it is the result of a failed Cython compilation.

      ^



     Error compiling Cython file:

     ------------------------------------------------------------

     ...

                 vertex_format.last_shader = self

                 for i in xrange(vertex_format.vattr_count):

                     attr = &vertex_format.vattr[i]

                     if attr.per_vertex == 0:

                         continue

                     attr.index = glGetAttribLocation(self.program, <char *><bytes>attr.name)

                                                                   ^

     ------------------------------------------------------------



     kivy/graphics/shader.pyx:448:63: Casting temporary Python object to non-numeric non-Python type

     error: command 'gcc' failed with exit status 1

    ----------------------------------------
    Cleaning up...
    Command /usr/bin/python3 -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/kivy/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-hvd8j0e_-record/install-rec

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof