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| -rw-r--r-- | functions.org | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/functions.org b/functions.org index 5675cc3..bb49268 100644 --- a/functions.org +++ b/functions.org @@ -22,17 +22,19 @@ equations. We shall first review these basics. Then we shall move on to other details such as doc-strings, default arguments and keyword arguments. + + First let's start IPython by typing ipython in the terminal. - Let's write a simple function that prints a Hello message, after + Let's write a simple function that prints a Hello message, upon accepting a name. def welcome(name): print "Hello", name - You would recall that def is a keyword that indicates a function + You would recall that def is a keyword that indicates the function definition. 'welcome' is the name of the function and 'name' is the lone argument to the function. Note that the function is - defined within an indented block, similar to any other block. Our + defined within an indented block, just like to any other block. Our function welcome just has one line in it's definition. We can call our function, as follows - @@ -55,7 +57,10 @@ Notice that the doc string uses triple quotes. If the doc-string exceeds one line, we can use new line characters in it. Also, as expected the doc-string is indented as is required - for anything within a block. + for anything within a block. Now that we have written the + documentation, how do we access it? IPython provides the question + mark feature that we have seen in the previous tutorials. welcome? + will display the docstring that we have just written. We shall now look at default arguments. [show slide with examples of functions with default arguments] |