Search for tag: "statement"

In this video we show how to take recursive definitions from mathematics and implement them in Python. To do this, we will need to have a function call itself in its own definition.

Another control-structure means another video on testing. But if you have following the Rule of Numbers, you will discover that you have enough tests for your for-loop. Instead, as we show in this…

In this video we show how to use for-loops in function definitions. In particular, we show that we go from a specification to code that uses a for-loop.

In this video we introduce a new control-structure: the for-loop. This control structure is specifically designed for processing iterable types like strings, tuples, and lists.

In this session we review conditionals, focusing on how we visualize them. This will be important for the second assignemnt.Conditional assignments will not be necessary for Assignment 1. In fact,…

This video introduces an advanced topic that is completely optional and will not appear on any exam. Lists don’t just allow us to use a single position in an assignment statement. We can also…

The big advantage that lists have over tuples is that they are mutable.In this video we show how to write assignment statements that modify the contents of a list.

We have a new control structure, so it is time once again to talk about testing. In this video we revisit the concept of code coverage and show testing a try-except is very similar to testing a…

The except-portion of an try-except statement is only executed when there is an error/crash. But, as we have seen, errors can occur anywhere in the call stack. In this video we show how try-except…

Try-except statements will allow use to write functions that we could not write with conditional statements. In this video, we show how to use try-except as a general programming tool.

In this video we intrduce a new control structure: the try-except statement. As we will see, it looks very similar to an if-else statment with some important differences.

Sometimes we absolutely need to enforce all of our preconditions, and we cannot live with the compromises of the previous video. In this video we show how to use top-down design to give us more…

Preconditions can get really complicated, and sometimes it is unclear how to enforce all of the preconditions. In this video we talk about why it is okay to break up a precondition and…

We now know how to do assert statements to create errors. But the error messages are a little cryptic. In this video we talk about how we can do a better job.

Determining responsibility can get really tedious. In this video, we show how we can responsibility explicit by creating errors on purpose. We introduce the assert statement, which will allow us to…

Objects are these folders that contain a portfolio of variables. These variables are called attributes. In thie video we talk about how we can access these attributes, or even change them.