We can perform various operations in Python like addition, subtraction, Multiplication, Division, etc.
[python]
>>>>5+8
13
>>>6-4
2
>>>>5*5
25
2
>>>9%4
1
[/python]
what if we want to divide numbers which are not properly divisible, consider
[python]
>>>>18/7
2
[/python]
By default Python considers numbers as integer type. For evaluation of a number in float, we can do like this
[python]
>>>18.0/7
2.5714285714285716
>>>18/7.0
2.5714285714285716
>>>18.0/7.0
2.5714285714285716
[/python]
Now last expression which I’ll be considering is the exponent. When we want to evaluate 2 power 3 (2 cube), then
[python]
>>>2**3
8
[/python]
Thus, using ** we can evaluate exponent expression.
Now moving onto Variables..
→ Variables
→ It is a pretty much a place holder or a temporary storage. To initialize a variable,
syntax: Variable_name=Value
example: x=8
this will assign value 8 to x.
[python]
>>>x+8
16
>>>x*3
24
[/python]
Thus, we can directly use the variables in the command which has the value in it.
We can assign multiple variables also.
[python]
>>>y=6
>>>x+y
14
[/python]
What if one needs to enter a value given by the user, i.e. Dynamic initializing. One can do that by using input() function.
Example:
[python]
>>>x=input(“Enter the number:")
Enter the number:12
>>>x
12
[/python]
Thus, we have completed some of the basics of variables and operators.
