{"id":82,"date":"2017-04-09T21:56:28","date_gmt":"2017-04-10T01:56:28","guid":{"rendered":"http:\/\/notebook.chaopricha.com\/?p=82"},"modified":"2017-04-25T11:31:20","modified_gmt":"2017-04-25T15:31:20","slug":"kivy-and-python-2-7x-on-windows-and-using-pip-to-install-wheels","status":"publish","type":"post","link":"https:\/\/notebook.chaopricha.com\/?p=82","title":{"rendered":"kivy and Python 2.7x On Windows (And Using Pip To Install Wheels)"},"content":{"rendered":"

\"\"<\/a>
\nI have been tinkering with GoLang for a while and haven’t been using \u00a0Python until today I came across a very interesting Python framework called kivy <\/a>(“Kee-vee”?) \u00a0It’s a very nice frame work that runs OpenGL with accelerated hardware to give you a smooth graphical user interface. \u00a0It also allows multi-touch for inputs. \u00a0It claims to be able to deploy on any platform including Android. \u00a0That’s very cool!.<\/p>\n

However, I ran into trouble quickly when I realize that I need Cython and other packages to use kivy. \u00a0My development environment is in Windows (I know I should use Linux, but we use Windows at work so I want to stay compatible with work). \u00a0Normally this is not a problem since I can go to my favorite Windows Binaries for Python Extension Packages webpage<\/a> maintained by Mr. Christopher Gohlke. \u00a0 He pretty much has everything you can think of for Windows binary packages. \u00a0It’s a lot cumbersome for me to go hunt down the Python sources for these packages and try to do the Python install myself. \u00a0It’s so much easier to go to a one stop shop like Mr. Gohlke’s page and just install the packages I want. The trouble is the page is now using Wheel files instead of the EXE files for the packages. This requires using PIP to do the installation and I have no idea at first how to do that. \u00a0Well, let me share with you what I found so that you can save time and frustration that require to use this amazing page of Python packages.<\/p>\n

Install Python<\/strong>
\nI’ll make the instruction as a brand new Python install. \u00a0I chose Python 2.7.13<\/a>\u00a0(32-bit) since it’s the latest 2.7.x as of the time of this writing. \u00a0I didn’t pick Python 3.x because we use Python 2.7.x at work and again I want to be compatible with work. \u00a0Someday I’ll try Python 3.x but so far many libraries are in Python 2.7.x and not everything has migrated over to Python 3.x yet even though it’s been almost like a decade since Python 3.x came out (2008 I think). \u00a0This instruction should technically work for any versions but you just need to make sure you match the packages with the version you are using. \u00a0For me, it’ll be 2.7.x and 32-bit for all the packages.<\/p>\n

Now you need to make sure you have Python in you windows path variable or you can’t call python.exe from anywhere in the command line.\u00a0Click Start Menu and type into the search box “Edit the system environment variables”. \u00a0Click on the option that showed up in search under Control Panel result.<\/p>\n

\"\"<\/a><\/p>\n

Now click on the “Environment Variables …” button under the System Properties screen that showed up.
\n\"\"<\/a><\/p>\n

Click on the Path variable under System variables. \u00a0You might have to scroll down if you have a lot of stuff in your System variables like I do. \u00a0Then click “Edit …”<\/p>\n

\"\"
\n<\/a>For Windows 10 (with Anniversary update), Microsoft kindly added a new easier to read screen for the path variable management. \u00a0If you have a different version of Windows, you’ll have to look through the long line of paths separated by semicolons (;). \u00a0To add path, just add a semicolon to the last path in the line and then type in the new path you want. \u00a0For Windows 10, just click on “New” button to add path variables. \u00a0Add the following paths (defaulted by Python 2.7.x install. \u00a0If you install python in a different folder, you’ll have to use your custom path):<\/p>\n

C:\\Python27\r\nC:\\Python27\\Scripts\r\n<\/pre>\n
\"\"<\/a><\/p>\n
Now that the difficult part is done, time to move on to PIP install.<\/p>\n
Download and Install PIP<\/strong>
\nThis page shows you how to install PIP<\/a> but I’ll explain how I did it. \u00a0Basically, right click on get-pip.py<\/a>\u00a0and save it to some folder. \u00a0I put it in a C:\\python_packages\\ where I collect my packages to install.<\/p>\n
Launch a command prompt (Click start button, type “CMD” into the search box and hit enter.). \u00a0Get to the directory where you keep the get-pip.py then type:<\/p>\n
python get-pip.py<\/pre>\n
If you correctly setup your path variables as I explained in the previous section then this should execute a pip package download. \u00a0Once this is done, you are almost ready to be able to use the Python wheel packages.<\/p>\n
Install Wheel Requirements to Use Mr. Gohlke’s packages
\nScroll \u00a0down and look for Pip package then download pip-9.01-py2.py3-none-any.whl from Gohlke page<\/a>\u00a0into any folder. \u00a0I recommend using the same folder where you put the get-pip.py script.<\/p>\n
[Update 4\/21\/2017]: You can get PIP<\/a> wheel from Python Package Index as well. \u00a0It’s a bit faster to download than Gohlke page. \u00a0Download the<\/p>\n
If your command prompt is still there and you are still in the same folder, you can type the following command:<\/p>\n
pip<\/span> install<\/span> python.exe pip-9.0.1-py2.py3-none-any.whl\/pip install pip-9.0.1-py2.py3-none-any.whl<\/span><\/pre>\n
It should say something about the requirement is installed. If it doesn’t come up with error then you are good to go.<\/p>\n
Installing Cython<\/strong>
\nSince we have PIP installed and requirements met, we can try installing a package from Mr. Gohlke’s page. \u00a0Let’s try installing Cython since we’ll need that for Kyvi. \u00a0Look for Cython-0.25.2-cp27-cp27m-win32.whl<\/em>\u00a0or whatever the latest version would be for Python 2.7.x and 32-bit. \u00a0Click on the link and you’ll be prompted for a save file location. \u00a0Again, I’ll put the package into the same folder we have been working with. \u00a0Kudos to Mr. Gohlke, The page is pretty well organized and kept up-to-date. \u00a0You can see from the file name what Python version and Windows version you need.
\n\"\"<\/a>
\nLaunch a command prompt again and navigate to our C:\\python_packages folder. Type the following command to install the Cython package:<\/p>\n
pip<\/span> install<\/span> pip install Cython-0.25.2-cp27-cp27m-win32.whl<\/span><\/pre>\n
You should see this message if everything went well:
\n\"\"<\/a>
\nIf you get an error saying that pip is unrecognized then you need to make sure that you have the path C:\\Python27\\Scripts in your path variables. \u00a0Also make sure to close your command prompt and relaunch it any time you updated your path variables. \u00a0The command prompt doesn’t know about the new variables until you restart it.<\/p>\n
The generic command for installing any packages is just:<\/p>\n
pip install SomePackage.whl<\/pre>\n
That’s it for installing Windows Binary wheels!<\/p>\n
Installing Kyvi
\nLet’s finish installing Kyvi now that we have Cython installed.<\/p>\n
First make sure that we have the latest pip wheel and setup tools using the following command:<\/p>\n
python -m pip install --upgrade pip wheel setuptools<\/pre>\n
Install all the dependencies required to run Kyvi:<\/p>\n
python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew<\/pre>\n
*Install gstreamer:<\/p>\n
python -m pip install kivy.deps.gstreamer<\/pre>\n
You could use a command line, but I kept running into a memory error issue maybe due to it being a large file (121 MB) and my firewall and anti-virus program so I just went to the PyPI site<\/a> to download the wheel. \u00a0I downloaded the appropriate version for my Python 2.7, 32-bit. ( kivy.deps.gstreamer-0.1.12-cp27-cp27m-win32.whl). \u00a0Once the file is downloaded to our usual location, run pip install:<\/p>\n
pip install kivy.deps.gstreamer-0.1.12-cp27-cp27m-win32.whl<\/pre>\n
There shouldn’t be any error messages if everything went well. \u00a0Finally, install kivy itself:<\/p>\n
python -m pip install kivy<\/pre>\n
Now let’s run an example python script using kivy to make sure that we have successfully installed kivy. \u00a0In command prompt,\u00a0type in this command:
\nc:\\Python27>python c:\\python27\\share\\kivy-examples\\demo\\showcase\\main.py<\/p>\n
If everything was installed correctly, you’ll see a brief script execution in the command prompt and you’ll be greeted with the hello world demo:
\n\"\"<\/a><\/p>\n
Now it’s time to have fun using kivy for your GUI. \u00a0I find it to be much prettier than Tk and much easier to use than Qt. \u00a0There are a lot of resources from kivy.org. \u00a0Here’s the link to building your first example app<\/a> in kivy.<\/p>\n","protected":false},"excerpt":{"rendered":"
I have been tinkering with GoLang for a while and haven’t been using \u00a0Python until today I came across a very interesting Python framework called kivy (“Kee-vee”?) \u00a0It’s a very nice frame work that runs OpenGL with accelerated hardware to … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,7],"tags":[],"_links":{"self":[{"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=\/wp\/v2\/posts\/82"}],"collection":[{"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=82"}],"version-history":[{"count":3,"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=\/wp\/v2\/posts\/82\/revisions"}],"predecessor-version":[{"id":94,"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=\/wp\/v2\/posts\/82\/revisions\/94"}],"wp:attachment":[{"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=82"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=82"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/notebook.chaopricha.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=82"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}