Programming Practice

Python

Learn an editor

Personally, I like Vim. This is a pretty powerful editor and with plugins can be just as powerful as an enterprise-grade IDE. To learn Vim, start by running vimtutor on the command-line. Complete the tutorial to get comfortable to use it for the following assignments.

Hello World

It's customary when learning a new programming language to create a "hello world" program. This is usually just a simple program that prints "hello world". The assignment is to create a python module which simply prints "hello world".

Requirements:

• I should be able to verify it by running python3 hello_world.py
• The output of the program should be hello world
• There is a function called main which is executed to print the message

Functions are defined via def <function name>(<parameters>):. If I wanted to define a function called foobar with no parameters, I would write it as:

# function definition
def foobar():
  # inner logic here...

# call foobar here
foobar()

Fun with functions

Define a function that reads input and converts the received input to a numerical object (e.g. float).

Define a function that computes the sum of two numerical values.

Define a function that loops infinitely and constantly appends your input to some value that will keep growing. Don't forget to print the value as it grows, so that you know it's growing. You could use a while True: loop to achieve this. Furthermore, you may want to create a "phrase" that will break you out of the loop.

Define a "main" function that combines the functions above to write an adder.py program.

Note: Each function should have a "docstring" explaining what each parameter to the function is and what the function does.