IT 117: Intermediate Scripting

IT 117: Intermediate Scripting
Quiz 10 Answers

If I wanted to define the class Cat which is a based upon the class Pet, what would I write for a class header?
```
class Cat(Pet)
```
Let's say that the constructor for the Pet class takes only 1 argument, the name of the pet. Write the Python statement you would use to call the Pet constructor within the Cat constructor code.
```
Pet.__init__(self, name)
```
If I wanted to call the __str__ method of the Pet class inside a method in the Cat class, what expression would I write?
```
super().__str__()
```
Let's say that both the Pet class and the Cat class have a method named get_name. If we call get_name on a Cat object, which class's version of this function will be used?
```
Cat
```
If I had a variable named var that pointed to an object and wanted to know whether this was an instance of the class Cat, what boolean expression would I write?
```
isinstance(var, Cat)
```
What do you call a function that calls itself?
```
a recursive function
```

What two things must be true about a recursive algorithm for it to work?

there must be a condition under which recusion will stop
the recursive call must approach this condition

What do call the situation where a function calls itself directly?
```
direct recursion
```
What do you call the situation where a function calls another function, which then calls the original function?
```
indirect recursion
```
Can you rewrite any recursive function using a loop instead of recursion?
```
yes
```