By Irv Kalb
Get began on the planet of software program improvement: cross from 0 wisdom of programming to very easily writing small to medium-sized courses in Python. Programming may be intimidating (especially whilst such a lot books on software program require you to grasp and use imprecise command line directions) however it doesn’t need to be that way!
In Learn to application with Python, writer Irv Kalb makes use of his in-person instructing event to steer you thru studying the Python machine programming language. He makes use of a conversational kind to make you're feeling as if he's your individual educate. All fabric is specified by a considerate demeanour, every one lesson construction on prior ones. Many real–world analogies make the cloth effortless to narrate to. a large choice of well-documented examples are supplied. alongside the way in which, you’ll advance small courses by yourself via a sequence of coding demanding situations that make stronger the content material of the chapters.
What you are going to study:
- Learn basic programming options together with: variables and project statements, services, conditionals, loops, lists, strings, dossier enter and output, net info, and information structures
- Get happy with the loose IDLE Interactive improvement surroundings (IDE), which you'll use to write down and debug all of your Python code - no use to exploit the command line!
- Build text-based courses, together with a couple of basic games
- Learn the way to re-use code by means of development your personal modules
- Use Python's integrated facts constructions and applications to symbolize and utilize complicated information from the Internet
Who this ebook is for:This booklet assumes that you've completely no past wisdom approximately programming. there is not any have to research or use any imprecise Unix instructions. scholars of any age who've had no publicity to programming and have an interest in studying to do software program improvement within the Python language. The booklet can be utilized as a textual content publication linked to a highschool or university creation to computing device technology path. Secondly, those who have had publicity to a couple laptop language except Python, who wish to construct solid behavior for programming in Python.
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Extra info for Learn to Program with Python
23 CHAPTER 2 ■ VARIABLES AND ASSIGNMENT STATEMENTS Simple Math Now let’s move on to some simple math for use in assignment statements. Python and all computer languages include the following standard set of math operators: • + Add • - Subtract • / Divide • * Multiply • ** Raise to the power of • % Modulo (also known as remainder) • ( ) Grouping (we’ll come back to this) Let’s try some very simple math. For demonstration purposes, I’ll just use variables named x and y. In the Shell, try the following: >>> >>> >>> 15 >>> 3 >>> 54 >>> 1 >>> x = 9 y = 6 print x + y print x - y print x * y print x / y Everything seems fine until we try the divide.
I introduced the math operators in Python and showed a few sample programs. You saw how to add comments to code, learned about whitespace, and were introduced to the types of errors you will see when writing code. ), Python also has a number of what are called built-in functions. This chapter discusses the following topics: • Built-in functions • Using a function/function call • Arguments • Getting a result back from a function • The type function • Getting input from the user using raw_input • Conversion functions: int, float, and str • Building our first real programs • Concatenation, or adding strings together • Another programming exercise • Using function calls inside assignment statements Overview of Built-in Functions I’ll give you an analogy to explain what a built-in function is.
My puppy's age is 2 years and 5 months. ” We were told that some math operators had precedence over other ones. For example, look at this assignment statement: x = 5 + 4 * 9 / 6 What operations are done in what order? The teacher explained that the acronym PEMDAS would help us to figure out the order. PEMDAS described the precedence order as 1. Parentheses 2. Exponents 3. Multiplication 4. Division 5. Addition 6. Subtraction However, I thought that it was a terrible idea to have some implied, seemingly arbitrary ordering of math operators.