Python Functions Lab

Intro

Time to practice some Python by writing functions that solve the four challenges below.

To test your functions, be sure to call each function at least once and print the returned value.

Set Up

Create a new Python repl on repl.it

Challenges

Write a function named sum_to that accepts a single integer, n, and returns the sum of the integers from 1 to n.

For example:
```
sum_to(6)  # returns 21
sum_to(10) # returns 55
```
Write a function named largest that takes a list of numbers as an argument and returns the largest number in that list.

For example:
```
largest([1, 2, 3, 4, 0])  # returns 4
largest([10, 4, 2, 231, 91, 54])  # returns 231
```

Write a function named occurances that takes two string arguments as input and counts the number of occurances of the second string inside the first string.

For example:

occurances('fleep floop', 'e')   # returns 2
occurances('fleep floop', 'p')   # returns 2
occurances('fleep floop', 'ee')  # returns 1
occurances('fleep floop', 'fe')  # returns 0

Write a function named product that takes an arbitrary number of numbers, multiplies them all together, and returns the product.
(HINT: Review your notes on *args).

For example:
```
product(-1, 4) # returns -4
product(2, 5, 5) # returns 50
product(4, 0.5, 5) # returns 10.0
```

Solution

Here's some possible solutions to these (don't peek unless you absolutely have to!)