A Primer on Scientific Programming with Python (Texts in by Hans Petter Langtangen

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By Hans Petter Langtangen

The ebook serves as a primary advent to desktop programming of clinical purposes, utilizing the high-level Python language. The exposition is instance and problem-oriented, the place the purposes are taken from arithmetic, numerical calculus, facts, physics, biology and finance. The e-book teaches "Matlab-style" and procedural programming in addition to object-oriented programming. highschool arithmetic is a required heritage and it's effective to review classical and numerical one-variable calculus in parallel with interpreting this e-book. in addition to studying find out how to software desktops, the reader also will how to remedy mathematical difficulties, bobbing up in numerous branches of technological know-how and engineering, by way of numerical tools and programming. by way of mixing programming, arithmetic and clinical functions, the e-book lays a fantastic origin for practising computational science.

From the reviews: Langtangen … does an outstanding activity of introducing programming as a collection of abilities in challenge fixing. He courses the reader into considering competently approximately generating software good judgment and knowledge buildings for modeling real-world difficulties utilizing gadgets and capabilities and embracing the object-oriented paradigm. … Summing Up: hugely recommended. 

F. H. Wild III, selection, Vol. forty seven (8), April 2010

Those folks who've discovered medical programming in Python ‘on the streets’ can be a little jealous of scholars who've the chance to take a direction out of Langtangen’s Primer.” 
John D. prepare dinner, The Mathematical organization of the United States, September 2011

This ebook is going via Python specifically, and programming ordinarily, through initiatives that scientists will most likely practice. It includes beneficial information for scholars new to medical computing and often is the excellent bridge among an creation to programming and a complicated path on numerical equipment or computational science.
Alex Small, IEEE, CiSE Vol. 14 (2), March/April 2012  

“This fourth version is an excellent, inclusive textbook that covers pretty well every thing one must be aware of to move from 0 to particularly refined medical programming in Python…”
Joan Horvath, Computing reports, March 2015 


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For example, the syntax of the print statement is the word print, followed by one or more spaces, followed by an expression of what we want to print (a Python variable, text enclosed in quotes, a number, for instance). Computers are very picky about syntax! For instance, a human having read all the previous pages may easily understand what this program does, 14 The R (or S or S-PLUS) programming languages for statistical computing actually use an arrow, while other languages such as Algol, Simula, and Pascal use := to explicitly state that we are not dealing with a mathematical equality.

This “slot” has a format specification %g, where the percentage sign marks the slot and the following character, g, is a format specification. The g that a real number is to be written as compactly as possible. The next variable, y, goes into the second “slot”. 2f, which means a real number written with two digits after comma. 2f format 10 This formatting was originally introduced by a function printf in the C programming language. 11 12 1 Computing with Formulas stands for float, a short form for floating-point number, which is the term used for a real number on a computer.

As usual, such a command launches a new window where you can fill in the name of the file where the program is to be stored. And as always, you must first check that you are in the right folder, or directory which is Idle’s word for the same thing. The upper line in the file dialog window contains the folder name. Clicking on the bar to the right (after the directory/folder name), gives a possibility to move upwards in the folder hierarchy, and clicking on the folder icon to the right of the bar, moves just one folder upwards.

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