Python packages creation made easy
Picnic.py helps you write python packages:
picnic.py new PackageName
This creates a directory with all the files you need to get started:
/PackageName_project /PackageName /setup.py /README.rst /packagename /__init__.py /packagename.py
Not enough ? Try this:
picnic.py new MyPackage --author=Zulko --sphinx --gitinit --dev
Now you have a new package with a Sphinx documentation and a git repository for your project. And your package has been installed on your computer in develop mode (meaning you can change the code directly from this folder, without needing to reinstall the project).
These commands also work on already-written packages. For instance if I go in the setup.py folder and type
picnic.py --remote=https://github.com/Zulko/MyPackage.git --ghpages
This will link my project to an existing Github repository and initialize the Github Pages for this project. Now I just need to push these on Github (see Cookbook below), which will give me this repo for the code, and this page for the online documentation (you can change the look afterwards).
Installation and customization
Picnic.py requires the awesome docopt package, that you can install with the classic
pip python install docopt
To install Picnic.py, get a zip of the code, for instance on Github, and unzip it in some folder. You can have a look at the file templates README.rst, setup.py etc in subfolder picnic/files, and customize them as you like.
Then, in the folder of the setup.py, type
sudo python setup.py install
or even better, use this command instead, it will enable you to change the templates even after the installation:
sudo python setup.py develop
And you are done ! Note that you can also install picnic.py with pip but it is not recommended as it doesn’t allow you to change the templates.
Picnic.py is an open source software originally written by Zulko and released under the MIT licence. Please help make picnic better, for instance by expanding the capabilities, providing advice for sounder standards if you are an experienced module-maker, reporting bugs, etc. We love forks and pull resquests !
And speaking about branches, there is another one being actively developed.
Picnic is being developped on Github. That’s where you should go for troubleshooting and bug reports.
In this section, which is meant for beginners in Python, Sphinx, git, and Github, we explain how the files created by Picnic.py are meant to be used. You can also get help from the console with
Creating a Python package
To start a new project, you type
picnic.py new PackageName
To install the package (you will be able to modify the code afterwards) type
python setup.py develop
Now we can start to code: we go in directory PackageName/packagename and in the file packagename.py we write
def say_hello(): print "Hello world !"
To check that this worked, open a python console (in any folder) and type
>>> import packagename >>> packagename.say_hello() Hello World !
Creating a Sphinx documentation
To initialize the Sphinx documentation you type
picnic.py [new PackageName] --author="Your Name" --sphinx
The documentation source will be in the docs directory and the built (html) doc will be in the folder built_docs/html/. To preview the docs after you have made some changes you can go into the docs repository and type
make html firefox ../../built_docs/html/index.html
For convenience these two lines are already written in the docs/make_html.sh file, therefore you only need to type
Creating a git repository
To create a git repository the classic way, you generally add a .gitignore file to your folder (to specify what kind of files not to include in the repo) and type these lines
git init git add . git commit -m "Initial commit"
The --git option does exactly all this: it adds a .gitignore file to the folder and runs all these commands. Be sure to run it in the directory where your setup.py is.
Here we suppose that you have already linked your project to Github with
git add remote origin https://link/to/your/repo.git
Now all you have to do is
This creates a special git repository for the Github Pages in the directory built_docs/html, which is the output directory of the documentation.
When you are happy with the way your documentation looks you go into folder built_docs/html and type
git commit -a -m "my description of the commit" git push origin gh-pages
That’s all there is to know !
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