Python notes

This page contains notes for coding in the Python scripting language.

Definitions

dictionary

a collection which is ordered and changeable. No duplicate members.

list

an ordered and changeable collection of data objects. Allows duplicate members. Similar to a tuple, set, or dictionary.

set

a collection which is unordered, unchangeable, and unindexed. No duplicate members.

tuple

a collection which is ordered and unchangeable. Allows duplicate members.

Examples

Control

Start python3.

 $ python3

Exit python3.

 >>> exit()

Lists

Create a list.

 >>> a = [2,3]
 >>> a
 [2,3]

Append a list with append().

 >>> a.append(5)
 >>> a
 [2, 3, 5]

Remove the second element with pop().

 >>> a
 [2, 3, 5]
 >>> a.pop(1)
 >>> a
 [2, 5]

Scripts

Shebang pattern.

#!/usr/bin/env python

See also

• My notes

External links

• bk4, reboil.com