Keep This Python Cheat Sheet On Hand When Learning To Code. Python is one of the best programming languages to learn.
As you get started, this one-page reference sheet of variables, methods and formatting options could come in handy. Provided by Dave Child, the cheat sheet includes both built-in system and operating system variables, as well as standard methods for working with lists, files and strings. You can download it for free in PDF or PNG version or view it online at the link below. Python Distribution Free.
Using .pth files for Python development. Python's site module is responsible for setting up the interpreter's environment upon startup.
One of the things it does during startup is scan your site directories (typically just site-packages , but framework builds for Mac OS X have an additional undocumented default location) for .pth files. .pth files are used to add additional locations sys.path , and they are typically created by distutils setup scripts that use the (still undocumented) extra_path argument. .pth files are a great alternative to using the PYTHONPATH environment variable: You don't have to screw with your environment (which can be difficult on Mac OS X and Windows).
The effect is localized to a particular Python installation. You can toggle their usage simply by moving them around on the filesystem. VirtualEnvironment. Try Python: Interactive Python Tutorial in the Browser. PythonMonk - Interactive Python tutorials. Python progression path - From apprentice to guru. [Resource] Learning Python. A lot of people who join this course might not be that familiar with Python, or not be familiar with Python at all.
So for those students this is a list of places where they can learn a bit about Python. Udacity CS101 - I took it in February & trust me it's worth it, even if you know Python.Learn Python The Hard Way - The hard way is the right way, and in the long run the easy way. Free to browse on the internet.Invent Your Own Computer Games with Python - A good book, with the blog a good resource too.
Programming. Python Cheat Sheet. String String Methods Array Indexes and Slices a=[0,1,2,3,4,5] 6 len(a) 0 a 5 a 5 a[-1] 4 a[-2] [1,2,3,4,5] a[1:] [0,1,2,3,4] a[:5] [0,1,2,3] a[:-2] [1,2] a[1:3] [1,2,3,4] a[1:-1] Shallow copy of a b=a[:] Math Constants math.pi The mathematical constant π = 3.141592..., to available precision. math.e The mathematical constant e = 2.718281..., to available precision.
Random Functions Sys Sys Variables argv Command line args builtin_module_names Linked C modules byteorder Native byte order check_-interval Signal check frequency exec_prefix Root directory executable Name of executable exitfunc Exit function name modules Loaded modules path Search path platform Current platform stdin, stdout, stderr File objects for I/O version_info Python version info winver Version number sys.argv foo.py sys.argv bar sys.argv -c sys.argv qux sys.argv --h sys.argv os Variables Class Special Methods String Formatting Formatting Operations 'd' Signed integer decimal. Date Formatting Date Formatting Ad. Python Epiphanies. The Python Grimoire - a hypertext tome pertaining to that most elegant of languages.
How to Configure Python. After you’ve installed Python, you may want to configure some system settings that impact the way Python runs your code.
(If you are just getting started with the language, you can probably skip this section completely; there is usually no need to specify any system settings for basic programs.) Generally speaking, parts of the Python interpreter’s behavior can be configured with environment variable settings and command-line options. In this section, we’ll take a brief look at both, but be sure to see other documentation sources for more details on the topics we introduce here.
Python Environment Variables Environment variables—known to some as shell variables, or DOS variables—are system-wide settings that live outside Python and thus can be used to customize the interpreter’s behavior each time it is run on a given computer. Table A.1. These variables are straightforward to use, but here are a few pointers: PYTHonstartUP tkinter settings How to Set Configuration Options import spam. A Note on Python Paths. This time I decided to share some knowledge about Python paths which seemed a little bit confusing to me in the beginning of diving into Python.
I am working with Django in different platforms like Mac OS X, Windows, and Linux, therefore the common patterns how to activate new python modules in all of those environments should be familiar to me. Python modules are either *.py files or directories containing __init__.py . When defining paths to python modules, you will usually need to deal with the latter ones.
Tutorials. 384 manually selected sites about Python Programming Language.