Tutorial — python-igraph v0.6 documentation This chapter contains a short overview of igraph‘s capabilities. It is highly recommended to read it at least once if you are new to igraph. I assume that you have already installed igraph; if you did not, see Installing igraph first. Familiarity with the Python language is also assumed; if this is the first time you are trying to use Python, there are many good Python tutorials on the Internet to get you started. Starting igraph igraph is a Python module, hence it can be imported exactly the same way as any other ordinary Python module at the Python prompt: $ python Python 2.5.1 (r251:54863, Apr 15 2008, 22:57:26) [GCC 4.0.1 (Apple Inc. build 5465)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import igraph This imports igraph‘s objects and methods inside an own namespace called igraph. >>> import igraph>>> print igraph. The third way to start igraph is to simply call the startup script that was supplied with the igraph package you installed. Note
The Python Standard Library — Python 2.7.18 documentation This document is for an old version of Python that is no longer supported. You should upgrade and read the Python documentation for the current stable release. Navigation The Python Standard Library¶ While The Python Language Reference describes the exact syntax and semantics of the Python language, this library reference manual describes the standard library that is distributed with Python. Python’s standard library is very extensive, offering a wide range of facilities as indicated by the long table of contents listed below. The Python installers for the Windows platform usually include the entire standard library and often also include many additional components. In addition to the standard library, there is a growing collection of several thousand components (from individual programs and modules to packages and entire application development frameworks), available from the Python Package Index. Previous topic 9. Next topic 1. This Page Show Source Quick search
Pearltrees Visualizes How You Organize the Web This post is part of Mashable's Spark of Genius series, which highlights a unique feature of startups. If you would like to have your startup considered for inclusion, please see the details here. The series is made possible by Microsoft BizSpark. Name: Pearltrees Quick Pitch: Pearltrees is a new visual way to organize content on the Web and connecting people's interests. Genius Idea: How do you organize the web on the browser? Signing up for Pearltrees is simple, but getting used to the interface and all of its features is not as easy. Now for the organization part: you can create complex systems of pearls, known as pearltrees. Clicking on a pearl gives you a range of options that go beyond visiting your favorite website. Pearltrees takes a time investment to make it useful. Spark of Genius Series Sponsored by Microsoft BizSpark Entrepreneurs can take advantage of the Azure Services platform for their website hosting and storage needs.
The Python Tutorial — Python 3.11.2 documentation Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms. The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python web site, and may be freely distributed. The same site also contains distributions of and pointers to many free third party Python modules, programs and tools, and additional documentation. The Python interpreter is easily extended with new functions and data types implemented in C or C++ (or other languages callable from C). This tutorial introduces the reader informally to the basic concepts and features of the Python language and system.
Programming with PyUSB 1.0 Who's who First of all, let's give an overview on the PyUSB modules. PyUSB modules are under the usb package. This package has the following modules: For example, to import the core module, you do as so: >>> import usb.core >>> dev = usb.core.find() Let's get it started Following is a simplistic program that sends the 'test' string to the first OUT endpoint found: import usb.core import usb.util # find our device dev = usb.core.find(idVendor=0xfffe, idProduct=0x0001) # was it found? The first two lines import PyUSB package modules. usb.core is the main module, and usb.util contains utility functions. Then, we look for the endpoint we are interested. If we know the endpoint address in advance, we could just call the write function from the device object: dev.write(1, 'test', 0) Here we write the string 'test' at endpoint address 1 of the interface number 0. What's wrong? Every function in PyUSB raises an exception in case of an error. You can also use the PyUSB log funcionality. Where are you?
PEP 8 -- Style Guide for Python Code Code should be written in a way that does not disadvantage other implementations of Python (PyPy, Jython, IronPython, Cython, Psyco, and such).For example, do not rely on CPython's efficient implementation of in-place string concatenation for statements in the form a += b or a = a + b. This optimization is fragile even in CPython (it only works for some types) and isn't present at all in implementations that don't use refcounting. In performance sensitive parts of the library, the ''.join() form should be used instead. This will ensure that concatenation occurs in linear time across various implementations.Comparisons to singletons like None should always be done with is or is not, never the equality operators.Also, beware of writing if x when you really mean if x is not None -- e.g. when testing whether a variable or argument that defaults to None was set to some other value. The other value might have a type (such as a container) that could be false in a boolean context!
software development - How to program a USB device with Debian/Python - Raspberry Pi Beta - Stack Exchange current community your communities Sign up or log in to customize your list. more stack exchange communities Stack Exchange sign up log in tour help Raspberry Pi beta Ask Question Take the 2-minute tour × Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi. How to program a USB device with Debian/Python 1 Answer active oldest votes Your Answer Sign up or log in Sign up using Google Sign up using Facebook Sign up using Stack Exchange Post as a guest discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Linked How can I connect to a USB serial device? Related Programming without a device How can I connect to a USB serial device? Can I build C++ on Debian? How to use a USB 485 in the Pi Is there a software block diagram that describes how a python call (e.g. Accessing a USB drive after start up with Python Resetting usb device from terminal Hot Network Questions more hot questions
BeginnersGuide/Programmers This is a Wiki page. Users with edit rights can edit it. You are, therefore, free to (in fact, encouraged to) add details of material that other Python users will find useful. It is not an advertising page and is here to serve the whole Python community. A beginner-friendly Python tutorial that starts with the absolute basics but also covers more advanced stuff like Python software deployment. Nature Publishing Group : science journals, jobs, and information Planet Python Parts Parts Library Fritzing is installed with a Parts Library--and with every new release we are adding new parts. In Fritzing, parts are organized into "bins" which can be accessed from the parts palette on the right. Fritzing ships with several bins. To search for a part, use the type-in field at the base of the parts bin palette. Another bin is called "Contrib". Lastly, there is another set of bins, each of which contains a collections of parts. All of these bins can be found by clicking on the small folder icon at the bottom right of the parts bin palette, and when the menu pops up, rolling over the "open" option. Also, check out which parts other users have submitted. Create your own parts Fritzing offers several ways to easily create the part that you need. If you don't want to do it yourself, consider using the Fritzing Part Creation service. Sharing your custom-made parts We will then try to incorporate your part in the next release.