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As you know by now, Michael Python and see, Python had two different programming languages Micro Python

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has copied, Python is faithfully as possible to create a high level language programming experience

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for microcontrollers.

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There are differences between the two languages, which I would like to summarize in the next few minutes.

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Now, the differences between micro python and Python are documented in detail in the Python website.

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There you can find a full list of those differences, as well as code examples that demonstrate them.

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In this lecture, I will mention only some of those differences that I believe are more relevant for

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the purposes of this course.

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So let's begin with syntax in Python.

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You can do things like forget to put a space between a literal number and a keyword to form an expression,

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and they will be OK.

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Python has enough flexibility to forgive mistakes like this.

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The same mistake in my code.

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Python, however, will generate a syntax error.

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Mokra Python developers had to throw away the logic needed to deal with tab was like that in order to

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make it fit in the limited storage of the target devices.

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Another example of the differences between the two languages is how the self Keywood is handled when

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self is used in a function in Python.

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It does not count it as an additional argument, but Michael Python does.

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As a result, if you provide an incorrect number of arguments to a function that contains self Keywood,

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then the error message it will get in Python will be different to what you get in micro python.

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I've got an example here.

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You can see this example.

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I'm calling the same function calculator both in Python and Python, and I'm putting a single argument.

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I should have passed two arguments, but I made a mistake.

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It just a single argument here you can see them and coding the exact same function with this same parameter.

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But the messages that are coming back to indicate the error are different.

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So, see, Python is telling me that I've got one required argument missing where your python is telling

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me that in total that are supposed to be three arguments I've only given to in fact, I've given one.

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So you can see that the message that is coming through here in Python is or can be a bit confusing,

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which can throw you off and cause you to delay you debarking.

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As long as you are aware of the situation with the self key word, I think you'll be able to get past

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issues like this.

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Here's another subtle difference that has to do with formatting in this particular example of a floating

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point number.

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When you print out formatted floating point numbers, the result may differ between Python and C Python

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here, printing out this floating number and using the same exact commands between you, Python and

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C Python, you python being Mokra, Python.

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And you can see that what comes out is different in each occasion.

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In this case, the G operator, when used with C Python, applies the exponential format to a number

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in the output.

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The chief operator differs between the two implementations.

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OK, next example of differences is the string C.

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Python, as you may know, contains powerful string manipulation functions and not all of them are available

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on micro python.

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Two examples are start with and end with these allow you to check if a string starts or ends with a

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specific character or string of characters in Micro Python.

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These functions only work in their basic format without the start and end indexed parameters.

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In the example here in this slide, you can see that the call to the end with function fails when we

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use it with the three parameters, but work with a single parameter in Python.

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No problem.

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Either one will just work properly and as expected.

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All right, next up.

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We've got Jason, and this course will use the micropayment Jason module to work with Internet of Things

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services, unlike, say, Python and the Python version of the Jason module, you, Jason, does not

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throw an exception if an object is not serializable.

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And this means that if your program receives a JSON document from a Web service that is not valid,

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you will not be able to deal with it gracefully.

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Using an exception handler, you will have to deal with this manually or your program will just crash.

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All right, so these were just some of this subtle differences between see Python and the micro python

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implementation and of course, there are many more.

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The best place again, to learn about them and about the changes is the python documentation in the

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next lecture.

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I'll show you some of the best online resources for Macur Python.

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And these are the resources that you'll want to watch so that we can access them anytime that you with

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Michael.