From 7d86d820471a6ced3d771f5f7aa5bdc8f7a49e56 Mon Sep 17 00:00:00 2001 From: Katy Huff Date: Sun, 16 Dec 2012 12:24:38 -0600 Subject: [PATCH] added back rst file, for future compatibility --- 4-SoftwareEngineering/README.rst | 54 ++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 4-SoftwareEngineering/README.rst diff --git a/4-SoftwareEngineering/README.rst b/4-SoftwareEngineering/README.rst new file mode 100644 index 0000000..7f175b4 --- /dev/null +++ b/4-SoftwareEngineering/README.rst @@ -0,0 +1,54 @@ +==================================== +Building a Library of Code you Trust +==================================== + +Suppose we're going to be dealing a lot with these animal count files, +and doing many different kinds of analysis with them. In the introduction +to Python lesson we wrote a function that reads these files but it's stuck +off in an IPython notebook. We could copy and paste it into a new notebook +every time we want to use it but that gets tedious and makes it difficult to +add features to the function. The ideal solution would be to keep the +function in one spot and use it over and over again from many different places. +Python modules to the rescue! + +We're going to move beyond the IPython notebook. Most Python code is +stored in `.py` files and then used in other `.py` files where it has been +pulled in using an `import` statement. Today we'll show you how to do that. + +========= +Exercises +========= + +Exercise 1 +---------- + +Make a new text file called `animals.py`. Copy the file reading +function from yesterday's IPython notebook into the file and modify it so +that it returns the columns of the file as lists (instead of printing +certain lines). + +Exercise 2 +---------- + +We're going to make a function to calculate the mean of all the +values in a list, but we're going to write the tests for it first. +Make a new text file called `test_animals.py`. Make a function called +`test_mean` that runs your theoretical mean function through several tests. + +Exercise 3 +---------- + +Write the mean function in `animals.py` and verify that it passes +your tests. + +Exercise 4 +---------- + +Write tests for a function that will take a file name and +animal name as arguments, and return the average number of animals per sighting. + +Exercise 5 +---------- + +Write a function that takes a file name and animal name and returns +the average number of animals per sighting. Make sure it passes your tests. -- 2.26.2