background preloader

Programming python

Facebook Twitter

Python Tools for Visual Studio - Home. [Python] simple class definition and use. Python Advanced: Advanced Topics. System Programming with Python "System focused programming" might be the better term than "System Programming".

Python Advanced: Advanced Topics

System programming or systems programming means often only the activity of "programming system software", programs which are often part of the operating system. Our topics in this section of our online course deal with Pipes, Threads and Forks and starting and using shell commands and scripts from a Python script. Overview — Python 2.7.9 documentation. Pydata/pydata-book. Python 3 Essential Training. Learn Python Through Public Data Hacking. - Learn Python by Example. Improve Your Python: Python Classes and Object Oriented Programming.

The class is a fundamental building block in Python.

Improve Your Python: Python Classes and Object Oriented Programming

It is the underpinning for not only many popular programs and libraries, but the Python standard library as well. Understanding what classes are, when to use them, and how the can be useful is essential, and the goal of this article. In the process, we'll explore what the term Object-Oriented Programming means and how it ties together with Python classes. Everything Is An Object... What is the class keyword used for, exactly? What do we mean by "logical grouping"? Regardless, classes are a modeling technique; a way of thinking about programs. ..So Everything Has A Class? Classes can be thought of as blueprints for creating objects. Class Customer(object): """A customer of ABC Bank with a checking account.

The class Customer(object) line does not create a new customer. The jeff object, known as an instance, is the realized version of the Customerclass. Self? So what's with that self parameter to all of the Customer methods? __init__ Face Recognition with Python, in under 25 lines of code - Real Python. The following is a guest post by Shantnu Tiwari, who has worked in the low level/embedded domain for ten years.

Face Recognition with Python, in under 25 lines of code - Real Python

Shantnu suffered at the hands of C/C++ for several years before he discovered Python, and it felt like a breath of fresh air. How to make beautiful data visualizations in Python with matplotlib. It’s been well over a year since I wrote my last tutorial, so I figure I’m overdue.

How to make beautiful data visualizations in Python with matplotlib

This time, I’m going to focus on how you can make beautiful data visualizations in Python with matplotlib. There are already tons of tutorials on how to make basic plots in matplotlib. There’s even a huge example plot gallery right on the matplotlib web site, so I’m not going to bother covering the basics here. However, one aspect that’s missing in all of these tutorials and examples is how to make a nice-looking plot. Below, I’m going to outline the basics of effective graphic design and show you how it’s done in matplotlib. Less is more The most important tip to learn here is that when it comes to plotting, less is more. Learn Python The Hard Way, 2nd Edition — Learn Python The Hard Way.

PythonLearn - Self-paced learning Python. Reading and Writing Files in Python. Python for Fun. This collection is a presentation of several small Python programs.

Python for Fun

They are aimed at intermediate programmers; people who have studied Python and are fairly comfortable with basic recursion and object oriented techniques. Each program is very short, never more than a couple of pages and accompanied with a write-up. I have found Python to be an excellent language to express algorithms clearly. Some of the ideas here originated in other programs in other languages. But in most cases I developed code from scratch from just an outline of an idea. 6 Free E-Books on Learning to Program with Python. Python is an increasingly popular language, and it's also a favorite language teaching first time programmers.

6 Free E-Books on Learning to Program with Python

We've compiled a list of beginner's books to choose from. Just because they're free doesn't mean they aren't good. Some of the books listed here have been used in courses such as MIT's Introduction to Computer Science and Programming course and University of California, Davis' Basic Concepts of Programming course. SQLAlchemy - The Database Toolkit for Python. Tutorial - Learn Python in 10 minutes. Beginner Python Projects. 13. Files — How to Think Like a Computer Scientist: Learning with Python 3. 13.1. About files While a program is running, its data is stored in random access memory (RAM).

RAM is fast and inexpensive, but it is also volatile, which means that when the program ends, or the computer shuts down, data in RAM disappears. To make data available the next time the computer is turned on and the program is started, it has to be written to a non-volatile storage medium, such a hard drive, usb drive, or CD-RW. Course Overviews - Real Python. With our courses you will learn Python programming through hands-on, interesting examples that are useful and fun!

Course Overviews - Real Python

Python Interview Problem - Parsing CSV Files - Real Python. So, a friend of mine recently interviewed for a back-end Python developer position, and the initial interview consisted of answering the following problem.

Python Interview Problem - Parsing CSV Files - Real Python

He was given two hours. Problem Football: The football.csv file contains the results from the English Premier League. The columns labeled ‘Goals’ and ‘Goals Allowed’ contain the total number of goals scored for and against each team in that season (so Arsenal scored 79 goals against opponents, and had 36 goals scored against them). Write a program to read the file, then print the name of the team with the smallest difference in ‘for’ and ‘against’ goals.Weather: In weather.csv you’ll find daily weather data. Python Interview Problem - Parsing CSV Files - Real Python. Django Migrations - A Primer - Real Python. What’s new in Django 1.7?

Django Migrations - A Primer - Real Python

Basically migrations. While there are some other nice features, the new migrations system is the big one. In the past you probably used South to handle database changes. However, in Django 1.7, migrations are now integrated into the Django Core thanks to Andrew Godwin, who ran this Kickstarter. He is also the original creator of South. In honor of this momentous update, we are going to cover migrations, how they work and how to get the most out of them across three blog posts and one video: Let’s begin… The problems that Migrations Solve. Send An Email Using Python - Geeks Squad. Gone are those days when we used to write letters carrying information and indeed they carried our emotions in the best way.

Send An Email Using Python - Geeks Squad

But with the advent of era full of new technologies when people wanted some thing faster way of communications need of email and text messages came into picture. The science behind networking got so much empowered that very less people use written way of communications. We email our stuffs and we rely on the network technology for the messages to conveyed perfectly. Learn Python The Hard Way, 3rd Edition.

Python Syntax Rules. Details Written by Noman Mubasher Category: Tutorials Hits: 538 Python provides a new type of syntax than any other programming languages and the main thing about Python syntax is it's indentation. First of all let's talk about syntax what's syntax in programming? How to make beautiful data visualizations in Python with matplotlib. Full Stack Python. SSH Connection with Python. Scipy.signal.square — SciPy v0.14.0 Reference Guide. Stop Writing Classes.

Django: Web Development for Perfectionists with Deadlines. Advanced Python or Understanding Python. Autoregressive Moving Average (ARMA): Sunspots data — statsmodels 0.6.0 documentation. Autoregressive Moving Average (ARMA): Artificial data — statsmodels 0.6.0 documentation. Lesson 20 : Time Series Analysis · ga-students/DS_HK_1 Wiki. Import numpy as npimport pandasimport matplotlib.pyplot as pltfrom sklearn import linear_modelfrom statsmodels.iolib.table import SimpleTable import statsmodels.api as smfrom scipy import statsfrom import qqplot print sm.datasets.sunspots.NOTE dta = sm.datasets.sunspots.load_pandas().data dta[:2] dta.plot(x="YEAR", y="SUNACTIVITY", figsize=(12,3)); Modeling Sunspots with a Linear Regression What problems do you think we will have?

Introduction_To_Time_Series_Using_Python. Time series analysis with pandas. Task: analysis of several time series data (AO, NAO) Modules: pandas Notebook file Here I am going to show just some basic pandas stuff for time series analysis, as I think for the Earth Scientists it's the most interesting topic. On the official website you can find explanation of what problems pandas solve in general, but I can tell you what problem pandas solve for me.

Python Tutorial - Time Series Analysis with Pandas. Time Series Data Analysis with pandas. Statsmodels.stats.stattools — statsmodels 0.6.0 documentation. """Statistical tests to be used in conjunction with the models Notes-----These functions haven't been formally tested. """ from scipy import statsimport numpy as np # TODO: these are pretty straightforward but they should be tested [docs]defdurbin_watson(resids,axis=0):""" Calculates the Durbin-Watson statistic Parameters ----------- resids : array-like Returns -------- dw : float, array-like The Durbin-Watson statistic. Notes ----- The null hypothesis of the test is that there is no serial correlation. The Durbin-Watson test statistics is defined as: .. math:: \sum_{t=2}^T((e_t - e_{t-1})^2)/\sum_{t=1}^Te_t^2 The test statistic is approximately equal to 2*(1-r) where ``r`` is the sample autocorrelation of the residuals.

Thus, for r == 0, indicating no serial correlation, the test statistic equals 2. Python-Numerics/ at master · CamDavidsonPilon/Python-Numerics. Introduction to ARIMA models. ARIMA(p,d,q)ARIMA(0,1,0) = random walk ARIMA(1,1,0) = differenced first-order autoregressive modelARIMA(0,1,1) without constant = simple exponential smoothingARIMA(0,1,1) with constant = simple exponential smoothing with growthARIMA(0,2,1) or (0,2,2) without constant = linear exponential smoothingA "mixed" model--ARIMA(1,1,1) Spreadsheet implementation ARIMA(p,d,q): ARIMA models are, in theory, the most general class of models for forecasting a time series which can be stationarized by transformations such as differencing and logging.

In fact, the easiest way to think of ARIMA models is as fine-tuned versions of random-walk and random-trend models: the fine-tuning consists of adding lags of the differenced series and/or lags of the forecast errors to the prediction equation, as needed to remove any last traces of autocorrelation from the forecast errors. The acronym ARIMA stands for "Auto-Regressive Integrated Moving Average. " which can be rearranged to. Time Series analysis tsa — statsmodels 0.7.0 documentation. Index of Packages Matching 'django' Sending Email From A Python Program. SQL for Python Developers.