A variable is a container for a value and it can be of various data types.
- Variable names are case sensitive
- Variable names must start with a letter or underscore
- Variables can have numbers but cannot start with numbers
int — for numericals
string — for alphanumericals
float — for numerics with decimal points
boolean — true or false
Strings in python can be written with either single or double quotes
A list is a collection which is ordered and can be changed.
A list also allows duplicate members.
To create a list we usually use square brackets or we can use a constructor as shown below;
A tuple is a collection which is ordered and cannot be changed.
A tuple also allows duplicate members.
In creating tuples we use parenthesis
A set is a collection which is unordered and unindexed which means when I print a set now it won’t be in the same when i print it again.
A set doesn’t allow duplicate members
A dictionary is a collection which is unordered, indexed and changeable.
A dictionary doesn’t allow duplicate members.
A function is a block of code which executes upon calling
Python is very sensitive to indentions and thus in creating functions, we make use of indents.
In creating functions we use the def keyword, as shown below
That’s all for now, I’ll be posting a continuation on this later on.