A fancy interface to the python interpreter!

Let's try that in the Python interpreter.

Let's see that in the Python interpreter.

Let's try this in the Python interpreter.

Let's try this in the Python interpreter.

Let's try this in the Python interpreter.

Let's see some examples in the Python interpreter.

Evans We can compute these using the Python interpreter.

Let's see how that works in the Python interpreter.

Let's try this in the Python interpreter to see why.

So let's look at what happens in the Python interpreter.

And with the Python interpreter it executes well on computers.

What it actually means I'll show you in the Python interpreter.

You can certainly also try running this in the Python interpreter

You run things through a Python interpreter. It gives you the answer.

D. Evans Now let's get started running code in the Python interpreter.

Even thought our simple JavaScript interpreter is ultimately written in Python, webpages typically include JavaScript rather than Python, it's handy.

The Python interpreter knows when a block ends based on where the indenting is.

So let's run this in the Python interpreter to see what the result is.

When you write a Python program and you run that in the interpreter, the interpreter has to figure out what the things are.

You've seen half of that here when we wrote an interpreter for JavaScript in Python.

The Python interpreter caught an error during the execution of your script. Please fix the script.

Interpreter

Interpreter

Let's see that in the Python interpreter so we make sure we understand what's going on here.

Here we are in the Python interpreter, and I'm just going to show you that this subrange operator actually does associate to the left in Python.

The difference between a compiler and an interpreter like Python is the compiler does all the work at once and then runs the new program whereas with an interpreter like Python you're doing this work at the same time.

Why are we bothering to write an interpreter for JavaScript that just runs Python in the end anyway?

Division by 0 doesn't really make sense and will typically cause the Python interpreter to stop and say,

I'd like you to fill in each blank with the answer we would get from the Python interpreter.

In our particular web browser, our HTML interpreter calls the JavaScript interpreter, and our HTML interpreter calls the graphics interpreter.

For example, given a concrete example of a Python statement, you'd want to know how the interpreter parses it.

We've been tasked with adding a while loop to our JavaScript interpreter that works just as it does in Python.

All right, and now we're back at our Python interpreter, and I'm going to type out the same code starting here.

You can definitely try running it but try to figure out on your own before running it in the Python interpreter

And I'm using Python..Python...

The Python interpreter caught an error during the execution of your script. Please fix the script and click the Finish button again.

It also turns out not shown here, but it's actually very similar that I could write in JavaScript an interpreter for Python.

And we've seen our first example of that that the Python interpreter takes its input of a program and runs that program.

Python

Python

It's like Python implemented in Python

start interactive kjs interpreter

I'm a simultaneous interpreter.

I'm writing an interpreter.