Let’s dive into the world of Python? Well buckle up, because we’re going on a wild ride through the basics of this amazing language that draws ideas from Objective-C, Rust, Haskell, Ruby, and more.
To set the stage: syntax. If you’ve ever seen a line of code that looks like this: `print(“Hello, World!”)`, then congratulations, you already know some Python! That’s right, it really is that simple. But let’s break down what each part means.
The first thing we have here is the keyword “print”. This tells Python to do something with our code: in this case, print out a message on the screen. Next up is the string inside quotation marks. A string is just a fancy way of saying text anything that appears between quotes or triple-quotes (more on those later).
So what’s going on here? Well, Python takes our code and translates it into something called bytecode. This bytecode is then executed by the interpreter, which tells your computer to do stuff based on what you wrote in your script. In this case, we’re telling Python to print out a message that says “Hello, World!”
Now variables. Variables are like little boxes where you can store information for later use. For example: `x = 5`. This creates a variable called x and assigns it the value of 5. You can then use this variable in your code by referencing its name, like so: `print(x)` which will print out whatever is stored inside that little box we created earlier (in this case, 5).
But what if you want to store something other than a number? No problem! Python can handle all sorts of data types. For example: `name = “John Doe”` or `age = 30`. You can even combine different data types in the same variable for instance, `my_list = [1, 2, “three”]` creates a list that contains three items (a number, another number, and a string).
Speaking of strings… did you know that Python has some pretty cool ways to manipulate them? For example: `name = “John Doe”`. If we want to print out just the first part of this name say, “Jo” we can use slicing! This is done by adding a colon and specifying which parts of the string you want to include (or exclude). So if we wanted to print out everything except for the last three letters of our name variable, we could do `print(name[:-3])`.
But what about those ***** quotes? Sometimes you might need to use a quote inside your code say, in a string. This can be tricky because Python will think that the second quote is actually part of the string! To get around this, we can use triple quotes (`”””` or `”’`) instead of regular double quotes. These allow us to include quotes within our strings without causing any confusion for Python.
And there you have it a basic introduction to Python syntax and variables. Of course, there’s much more to learn about this amazing language that draws ideas from Objective-C, Rust, Haskell, Ruby, C#, CLU, and far too many others to list… but we’ll save that for another time! Later !