Variables Declarations & Arithmetic Operators

Do: 

• Variables names can contain only letters, numbers and underscores.

• They can start with a letter or an underscore

• Underscore can be used to separated words

• Python keywords should be avoid

• Variables names should be short/descriptive

Don'ts:

• Variables can't start with numbers
• Spaces are not allowed in variables names

Python has five standard data types:

• Numbers (int, long, float, complex)

• String

• List (series of values in a particular order)

• Tuple (group of fixed values  in size)

• Dictionary (allows you to connect pieces of info)

Variable Declaration:

Type	Format
int	myInt = 5
long	myLong = 10L
float	myFloat = 88.10
complex	3.14J

String:
studentId = "55555"
firstName = "Programming"
lastName = "Clue"
   

List:
firstList = []
secondList = [1,2,3]
thirdList =  [2,4,'programmingClue']

Tuples: 
myTuple = ('real madrid', 'fc barcelona', 'arsenal')

Dictionary:
myClubs = {'Real Madrid':'Spain', 'Bayer': 'Germany', 'Miami FC':'US' }

Arithmetic Operators

Operator	Meaning	Type
+	Addition	Binary
-	Subtraction	Binary
*	Multiplication	Binary
/	Division	Binary
%	Modulus	Binary