PythonHowTo - Historique des versions

NicolasSaunier : /* Random Topics */

2026-07-17T12:00:56Z

‎Random Topics

NicolasSaunier : /* Links */

2026-07-17T12:00:43Z

‎Links

NicolasSaunier : /* Tools and Scientific libraries */

2026-07-17T12:00:18Z

‎Tools and Scientific libraries

NicolasSaunier : /* Environment Variables for your Code and Other Downloaded Libraries */

2026-07-17T12:00:01Z

‎Environment Variables for your Code and Other Downloaded Libraries

NicolasSaunier : /* Install Modules */

2026-07-17T11:58:45Z

‎Install Modules

NicolasSaunier : /* Install Modules */

2026-07-17T11:58:19Z

‎Install Modules

NicolasSaunier : /* Old Material */

2026-07-17T11:56:39Z

‎Old Material

NicolasSaunier : /* Install Modules */

2026-07-17T11:55:20Z

‎Install Modules

NicolasSaunier : /* Old Material */

2026-07-17T11:50:01Z

‎Old Material

NicolasSaunier : /* Install Modules */

2026-07-16T05:37:49Z

‎Install Modules

@@ Ligne 57 : / Ligne 57 : @@
 = Random Topics=
 == Shapely ==
 - I left functions in moving (in Point) that returns whether a point is in a polygon or not.

← Version précédente		Version du 17 juillet 2026 à 12:00
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	$ import your_module		$ import your_module
−
−	~~= Links =~~
−	* Finding the shortest cycling path in the shade https://medium.com/@tanyamarleytsui/shady-streets-6dad0979c13a

	= Random Topics=		= Random Topics=

← Version précédente		Version du 17 juillet 2026 à 12:00
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	$ import your_module		$ import your_module
−
−	~~== Tools and Scientific libraries ==~~
−
−	~~Tools~~
−	* Better interpreter: ipython https://ipython.org/
−	* Running and presenting code with Jupyter Notebooks https://jupyter.org/
−	~~Libraries~~
−	* Matplotlib http://matplotlib.org
−	* Numpy http://www.numpy.org
−	* Computer Vision: OpenCV , scikit-image
−	* Statistics and machine learning: scipy, scikit-learn
−	* Geometry and GIS: shapely
−	* Tabular data loading/processing: pandas
−	* ORM: sqlalchemy

	= Links =		= Links =

@@ Ligne 40 : / Ligne 40 : @@
 == Environment Variables for your Code and Other Downloaded Libraries ==
-To use Python modules from your code or downloaded code, the Python interpreter needs to know where to look for them. The first and preferred way is to set (or add to) the environment variable <tt>PYTHONPATH</tt> to refer to the location of the Python modules to load:
+To use Python modules from your code or downloaded code, the Python interpreter needs to know where to look for them (if installed through pip, it should wordk without any other action). The first and preferred way is to set (or add to) the environment variable <tt>PYTHONPATH</tt> to refer to the location of the Python modules to load:
 * on Windows, add or modify the <tt>PYTHONPATH</tt> environment variable. Given the example installation path <tt>C:\Code\my_python_modules\</tt>, it should be set to <tt>C:\Code\my_python_modules\</tt>, e.g. <tt>C:\Users\username\traffic-intelligence\</tt> for the [https://bitbucket.org/Nicolas/trafficintelligence/ Traffic Intelligence] modules (in the trafficintelligence package);
@@ Ligne 46 : / Ligne 46 : @@
 * on both platforms, other paths can be added, separated by <tt>:</tt>.
-If that did not work, you can add the path to the sys.path system variable in the Python interpreter or at the beginning of your code, before your import statements:
+If that did not work, you can add the path to the sys.path system variable in the Python interpreter or at the beginning of your code, before your import statements (it also helps diagnose if your path is wrong by looking at the content of sys.path):
   $ import sys

@@ Ligne 28 : / Ligne 28 : @@
   $ python -m pip install SomePackage
-I highly recommend the [[https://ipython.org/|IPython interpreter]] and, to a lesser degree, [[https://jupyter.org/|Jupyter]] (for the notebooks). See [https://sourceforge.net/p/traffic-intelligence/code/ci/default/tree/python-requirements.txt Traffic Intelligence requirements.txt] for the recommended scientific packages (<tt>pip install -r requirements.txt</tt>):
+I highly recommend the [https://ipython.org/ IPython interpreter] and, to a lesser degree, [https://jupyter.org/ Jupyter] (for the notebooks). See [https://sourceforge.net/p/traffic-intelligence/code/ci/default/tree/python-requirements.txt Traffic Intelligence requirements.txt] for the recommended scientific packages (<tt>pip install -r requirements.txt</tt>):
 * Matplotlib http://matplotlib.org

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 * Tabular data loading/processing: pandas
 * ORM: sqlalchemy
 == Environment Variables for your Code and Other Downloaded Libraries ==

@@ Ligne 28 : / Ligne 28 : @@
   $ python -m pip install SomePackage
-I highly recommend the IPython interpreter and, to a lesser degree, jupyter (for the notebooks). See [https://sourceforge.net/p/traffic-intelligence/code/ci/default/tree/python-requirements.txt Traffic Intelligence requirements.txt] for the recommended scientific packages (<tt>pip install -r requirements.txt</tt>).
+I highly recommend the IPython interpreter and, to a lesser degree, Jupyter (for the notebooks). See [https://sourceforge.net/p/traffic-intelligence/code/ci/default/tree/python-requirements.txt Traffic Intelligence requirements.txt] for the recommended scientific packages (<tt>pip install -r requirements.txt</tt>):
 = Old Material=

← Version précédente		Version du 17 juillet 2026 à 11:50
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	= Old Material=		= Old Material=
−
−	* It is easy to install the necessary packages using easy_install/pip/conda once you have the basics
−	** pip is recommended with the online script https://bootstrap.pypa.io/get-pip.py. Any <tt>module</tt> can be installed through and updated: <tt>pip install <module> --upgrade</tt> (will install in the user home directory).
−
−	* I recommend a scientific distribution of Python, ie Python with the improved interpreter iPython and the core scientific libraries (Numpy, Scipy, Matplotlib, Pandas, etc.) that are used for example in the [https://trafficintelligence.confins.net Traffic Intelligence] project:
−	** There are three main choices: [https://www.continuum.io/why-anaconda anaconda], [https://python-xy.github.io/ PythonXY] and [https://assets.enthought.com/downloads/ Enthought Python Distribution].
−	** In addition, if you want to install other Python packages not provided by default, such as OpenCV that is needed to display video data and replay extracted trajectories over the video (used in the cvutils module). For example:
−
−	~~$ conda install opencv3~~
−	~~$ pip install opencv-python~~
−
−	~~or (you can search your preferred version using)~~
−
−	~~$ anaconda search -t conda opencv~~
−	~~$ anaconda show <user/package>~~
−	~~$ conda install --channel https://conda.anaconda.org/menpo opencv3 # for example~~

	I recommend a good text editor with indispensable functionalities such as text coloring and parenthesis highlighting such as [http://notepad-plus-plus.org notepad++] on Windows, or [https://atom.io/ atom] and [http://projects.gnome.org/gedit/ gedit] (for Windows, Mac and Linux).		I recommend a good text editor with indispensable functionalities such as text coloring and parenthesis highlighting such as [http://notepad-plus-plus.org notepad++] on Windows, or [https://atom.io/ atom] and [http://projects.gnome.org/gedit/ gedit] (for Windows, Mac and Linux).