Python examples

This page contains examples and links to programs used for our Research Methods - Programming with Python short course.

Very simple Python

Start a Python interactive session using the "python" command to get a >>> prompt.

Type

>>>x=1

and then simply

>>>x

and you'll see

1

Type

>>>x=1.01

and then after you type "x" you'll see

>>>x
1.01

Clearly you have a real-time calculator in hand, so try something more exciting.

>>>x=1.01
>>>y=1.0001
x/y

and you'll see something like this

1.0098990100989902

Modify that with

>>>z=x/y
>>>z

and you'll see the same result. But now try

>>>int(z)

and you'll see

1

That is, the function int() took the integer part of z. You can put that in another variable such as

>>>a=int(z)
>>>a
1

Curiously, a seems to be an integer. It is said to be dymanically typed in this assignment. That can change. If you now add a little bit to a you'll see it turns into a floating point number

>>>a = a + 0.001
>>>a
1.001