A Primer on Scientific Programming with Python (4th Edition) by Hans Petter Langtangen

By Hans Petter Langtangen

The e-book serves as a primary advent to desktop programming of medical functions, utilizing the high-level Python language. The exposition is instance and problem-oriented, the place the purposes are taken from arithmetic, numerical calculus, records, physics, biology and finance. The booklet 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 analyzing this ebook. along with studying the best way to application pcs, the reader also will methods to resolve mathematical difficulties, coming up in a number of branches of technological know-how and engineering, by means of numerical tools and programming. via mixing programming, arithmetic and medical functions, the ebook lays a superb starting place for training computational technology.

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Extra resources for A Primer on Scientific Programming with Python (4th Edition) (Texts in Computational Science and Engineering, Volume 6)

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The next variable, y, goes into the second “slot”. 2f, which means a real number written with two digits after comma. 2f format stands for float, a short form for floating-point number, which is the term used for a real number on a computer. py in the src/formulas folder of the collection of programs associated with this book. There are many more ways to specify formats. 2432 · 10≠3 . 2432e-03. 2432E-03. 2432E-03. With the g format, the output will use scientific notation for large or small numbers and decimal notation otherwise.

0 to a float object. 19 20 1 Computing with formulas There are lots of different object types in Python, and you will later learn how to create your own customized objects. Some objects contain a lot of data, not just an integer or a real number. 0) a str (string) object, without a name, is first made of the text between the quotes and then this str object is printed. 3 Avoiding integer division As a quite general rule of thumb, one should be careful to avoid integer division when programming mathematical formulas.

We have in fact devoted Appendix F to the art of debugging in this book. The origin of the strange terms bug and debugging can be found in Wikipedia3 . Programs are built of statements. 2 Computer science glossary v0 = 3 is an assignment statement, while print y is a print statement. It is common to have one statement on each line, but it is possible to write multiple statements on one line if the statements are separated by semi-colon. 5*g*t**2 print y Although most newcomers to computer programming will think they understand the meaning of the lines in the above program, it is important to be aware of some major differences between notation in a computer program and notation in mathematics.

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