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Add a brief description of the print statement #101

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Add a brief description of the print statement #101

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16 changes: 16 additions & 0 deletions python_introduction/README.md
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Expand Up @@ -150,6 +150,22 @@ Awesome, right? Of course, variables can be anything, so numbers too! Try this:

Play with this for a while and see what you can do!


## The print function

Try this:

>>> message = 'hello'
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I would prefer using name = 'Ola' rather than the traditional hello world.

I've found that it makes the participants subsitute their own name instead and they're more engaged as a result.

>>> message
'hello'
>>> print(message)
hello

When you just type `message`, the Python interpreter responds with the string *representation* of the variable 'message', which is the letters h-e-l-l-o, surrounded by single quotes, ''. When you say `print(message)`, Python will "print" the contents of the variable to the screen, without the quotes, which is neater.

As we'll see later, `print()` is also useful when we want to print things from inside functions, or when we want to print things on multiple lines.


## Lists

Beside strings and integers, Python has all sorts of different types of objects. Now we're going to introduce one called __list__. Lists are exactly what you think they are: they are objects which are lists of other objects :)
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