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Etienne Pallier, 03/18/2016 10:51 am

Technical Documentation for the PYROS project (FGFT-CC)¶

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Technical Documentation for the PYROS project (FGFT-CC)
- I - INSTALLATION

I - INSTALLATION¶

Create database¶

One liner:
$ mysql -u root < pyros.sql

Or :
$ mysql -u root
mysql> create database pyros;
mysql> use pyros;
mysql> source pyros.sql;

(
TODO:
mysql> grant all on pyros.* to pyros@localhost identified by ‘pyros’;)
mysql> flush privileges;
)

Install python3.5¶

Mac OS X :

1) Installer MacPort
(TODO: doc)

2) Installer le "port" python35
$ sudo port install python35

Linux (Ubuntu) :
```
$ sudo apt-get ...
```

Create project dir¶

$ mkdir pyros

Create virtualenv with python3.5 dedicated to pyros project¶

$ cd pyros/

$ which python3.5
/opt/local/bin/python3.5

$ virtualenv-3.5 venv_py35_pyros -p /opt/local/bin/python3.5
=> creates a venv_py35_pyros/ folder inside pyros/

Activate venv¶

$ source venv_py35_pyros/bin/activate

$ python -V
Python 3.5.1

$ which pip
…/pyros/venv_py35_pyros/bin/pip

Upgrade pip to last version available :

$ pip install --upgrade pip
Collecting pip
Downloading pip-8.1.1-py2.py3-none-any.whl (1.2MB)
Installing collected packages: pip
Found existing installation: pip 7.1.2
Uninstalling pip-7.1.2:
Successfully uninstalled pip-7.1.2
Successfully installed pip-8.1.1

Install needed python packages (from within the virtual environment)¶

Install Django :

$ pip install django
Collecting django
  Downloading Django-1.9.4-py2.py3-none-any.whl (6.6MB)
Installing collected packages: django
Successfully installed django-1.9.4

$ pip install django-admin-tools
Collecting django-admin-tools
  Downloading django_admin_tools-0.7.2-py2.py3-none-any.whl (289kB)
Installing collected packages: django-admin-tools
Successfully installed django-admin-tools-0.7.2

$ pip install django-debug-toolbar
Collecting django-debug-toolbar
  Downloading django_debug_toolbar-1.4-py2.py3-none-any.whl (212kB)
Requirement already satisfied (use --upgrade to upgrade): Django>=1.7 in ./venv_py35_pyros/lib/python3.5/site-packages (from django-debug-toolbar)
Collecting sqlparse (from django-debug-toolbar)
  Downloading sqlparse-0.1.19.tar.gz (58kB)
Building wheels for collected packages: sqlparse
  Running setup.py bdist_wheel for sqlparse ... done
  Stored in directory: /Users/epallier/Library/Caches/pip/wheels/7b/d4/72/6011bb100dd5fc213164e4bbee13d4e03261dd54ce6a5de6b8
Successfully built sqlparse
Installing collected packages: sqlparse, django-debug-toolbar
Successfully installed django-debug-toolbar-1.4 sqlparse-0.1.19

$ pip install django-extensions
Collecting django-extensions
  Downloading django_extensions-1.6.1-py2.py3-none-any.whl (202kB)
Collecting six>=1.2 (from django-extensions)
  Downloading six-1.10.0-py2.py3-none-any.whl
Installing collected packages: six, django-extensions
Successfully installed django-extensions-1.6.1 six-1.10.0

$ pip install django-suit
Collecting django-suit
  Downloading django-suit-0.2.18.tar.gz (587kB)
Building wheels for collected packages: django-suit
  Running setup.py bdist_wheel for django-suit ... done
  Stored in directory: /Users/epallier/Library/Caches/pip/wheels/12/8b/9a/e02ab0ad9229881638aa040d47d77c8f562999533811927d41
Successfully built django-suit
Installing collected packages: django-suit
Successfully installed django-suit-0.2.18

Install the web application server gunicorn (will be used in production instead of the dev django web server) :

$ pip install gunicorn
Collecting gunicorn
  Downloading gunicorn-19.4.5-py2.py3-none-any.whl (112kB)
Installing collected packages: gunicorn
Successfully installed gunicorn-19.4.5

Install the python mysql client:

$ pip install mysqlclient
...

=> Issue under Mac OS X:


Collecting mysqlclient
  Downloading mysqlclient-1.3.7.tar.gz (79kB)
Building wheels for collected packages: mysqlclient
  Running setup.py bdist_wheel for mysqlclient ... error
…
  ----------------------------------------
  Failed building wheel for mysqlclient
  Running setup.py clean for mysqlclient
Failed to build mysqlclient
Installing collected packages: mysqlclient
  Running setup.py install for mysqlclient ... done
Successfully installed mysqlclient-1.3.7

BOUH !!!

$ pip install --upgrade wheel
Collecting wheel
  Downloading wheel-0.29.0-py2.py3-none-any.whl (66kB)
Installing collected packages: wheel
  Found existing installation: wheel 0.24.0
    Uninstalling wheel-0.24.0:
      Successfully uninstalled wheel-0.24.0
Successfully installed wheel-0.29.0

$ pip uninstall mysqlclient

$ pip install mysqlclient
Collecting mysqlclient
  Using cached mysqlclient-1.3.7.tar.gz
Building wheels for collected packages: mysqlclient
  Running setup.py bdist_wheel for mysqlclient ... done
  Stored in directory: /Users/epallier/Library/Caches/pip/wheels/9b/06/50/d11418c26cf8f2156b13d4363b5afde8e7e75ebb8540d0228d
Successfully built mysqlclient
Installing collected packages: mysqlclient
Successfully installed mysqlclient-1.3.7

YES !!!

Project organization¶

Example of a good organization :

1 project = N applis
(but 1 appli can be part of many projects)
(then 1 appli = N models)


MYPROJECT/

    src/
        myproject/
        appli1/
        appli2/
        …
        appliN/

    public/
        static/

    private/
        requirements.txt

Set needed folders:

$ cd pyros/
$ mkdir private public
$ mkdir public/static

Create Django project pyros¶

$ cd pyros/

$ django-admin startproject pyros

$ tree pyros/
pyros/
├── manage.py
└── pyros
    ├── __init__.py
    ├── settings.py
    ├── urls.py
    └── wsgi.py

$ mv pyros src

$ cd src/

$ ./manage.py runserver
(or gunicorn pyros.wsgi)
==> http://localhost:8000

Set Database engine as MySql¶

Edit src/pyros/settings.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'pyros',
        'USER': 'root',
        'PASSWORD': ''
    }
}

Import database into Django (with inspectdb)¶

$ cd src/

$ ./manage.py inspectdb > models.py

Traceback (most recent call last):
File "/Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/django/db/backends/mysql/base.py", line 25, in <module>
import MySQLdb as Database
File "/Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/MySQLdb/__init__.py", line 19, in <module>
import _mysql
ImportError: dlopen(/Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/_mysql.cpython-35m-darwin.so, 2): Library not loaded: libmysqlclient.18.dylib
Referenced from: /Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/_mysql.cpython-35m-darwin.so
Reason: image not found

=> BOUH !!!

LA SOLUTION EST ICI : http://stackoverflow.com/questions/6383310/python-mysqldb-library-not-loaded-libmysqlclient-18-dylib

(
Apparemment, ceci aurait dû suffire:
mkdir -p /usr/local/lib
ln -s /usr/local/mysql/lib/libmysql* /usr/local/lib
)

Mais j’ai fait ceci:

$ otool -L /Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/_mysql.cpython-35m-darwin.so
/Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/_mysql.cpython-35m-darwin.so:
libmysqlclient.18.dylib (compatibility version 18.0.0, current version 18.0.0)
...

$ locate libmysqlclient.18.dylib
/Applications/XAMPP/xamppfiles/lib/libmysqlclient.18.dylib
/Library/SystemMigration/History/Migration-68137DFB-CB6A-4FBB-81E2-11BDB5D01E48/QuarantineRoot/usr/lib/libmysqlclient.18.dylib

$ sudo install_name_tool -change libmysqlclient.18.dylib /Applications/XAMPP/xamppfiles/lib/libmysqlclient.18.dylib /Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/_mysql.cpython-35m-darwin.so

$ otool -L /Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/_mysql.cpython-35m-darwin.so
/Users/epallier/Documents/_W_more/PROJECTS/GFT/SOFT/PYROS/pyros/venv_py35_pyros/lib/python3.5/site-packages/_mysql.cpython-35m-darwin.so:
/Applications/XAMPP/xamppfiles/lib/libmysqlclient.18.dylib (compatibility version 18.0.0, current version 18.0.0)
...

$ ./manage.py inspectdb > models.py

=> YES !!!

Create a django application pyrosapp¶

$ ./manage.py startapp pyrosapp

$ tree src
src
├── db.sqlite3
├── manage.py
├── pyros
│   ├── init.py
│   ├── pycache
│   │   ├── init.cpython-35.pyc
│   │   ├── settings.cpython-35.pyc
│   │   ├── urls.cpython-35.pyc
│   │   └── wsgi.cpython-35.pyc
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
└── pyrosapp
├── init.py
├── admin.py
├── apps.py
├── migrations
│   └── init.py
├── models.py
├── tests.py
└── views.py

Replace the default pyrosapp models.py with the inspectdb generated one¶

$ mv models.py pyrosapp/

TODO

Fix and improve the inspectdb generated file models.py¶

$ cd pyrosapp/

$ vi models.py

pyros intro.pdf (77.7 KB) Etienne Pallier, 02/06/2019 05:04 pm

pyros specs.pdf (1.8 MB) Etienne Pallier, 02/06/2019 05:04 pm

pyros dev-guide.pdf (649 KB) Etienne Pallier, 02/06/2019 05:04 pm