In this Python tutorial, you will learn how to work with numbers in Python. You will have a complete understanding of numbers at the end of this session.

There are three types of numbers in Python:

integers, floating-point numbers, and Complex.

An integer type is a number that is a whole number. It could be both positive and negative. There is no decimal in it.

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Consider the following scenario:

a=15 #int
b= 107 #int
c= -659 #int

Float Type- It has decimal and can be either positive or negative.

Consider the following scenario:

a= 9.20 #float
b=15.0 #float
c= -147.23 #float

Complex numbers are those that have the form a+bJ, where J is the square root.

a= 16+8j # complex
b= 9j #complex
c= -4j #complex

You may check the type of any number by typing-

print(type(a))

and it will yield the number’s type. For instance, if you want to check the type of the number of a=5, you can do it as follows.

a=50
print(type(a))
<class 'int'>

Type Conversion- You may easily convert a number from one type to another, such as from an int to a float, a float to a complex, and so on.

Check it out. How to convert a specific integer type-

a= 16 #int
b=72.9 #float
c= 72+5j #complex

From int to float-

x= float(a)

From float to int-

y= int(b)

From float to complex-

z= complex(b)

It’s as simple as that; you can change from one type to another with only one line of code.

Complex numbers cannot be converted to any other type.

Simple Python Calculations- Now that you’ve mastered the different sorts of numbers and how to convert them, it’s time to practice some basic python calculations.

So, are you all set? Let’s begin with some basic math.

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Simply type as you enter on the calculator for simple addition, subtraction, multiplication, and division. Isn’t it simple? Let’s take a look at how to do it-

To practice with us, copy and paste this code into your Python environment

15+15   #addition
30

10-10    #substraction
0

6*6    #multiplication
36

15/15   #division
1.0 # float type

5//5   #division
1   #int type

For the square root of number-

5**5
3125

For remainder/modulus–

20%3
2

BIDMAS Rule-If you want to execute a longer calculation, you must follow the BIDMAS Rule. Let’s look at an example to see how it impacts the entire calculation.

5+5*3
20

Because * has a higher priority than + according to the BIDMAS Rule, it returns 20 as a result.

If you want to execute addition first, put it in a bracket, since in the BIDMAS Rule, a bracket takes precedence over * Let’s look at an example where the outcome is changed just by using a bracket ().

(5+5)*3
30

Numbers can be stored in variables and then used to conduct calculations on them. Let’s take a look at how you can do it-

age=35   #store number in variable "age"
age      #print "age"
35

perform addition on “age”

age+5
40

“age+5” just adds 5 to your age variable’s value of 35, but it has no effect on the value of the variable “age.” If you type in “age,” you’ll get a result of 35.

age
35         #print 35 again

If you want to change the value of “age,” all you have to do is write-

age= age+5    #add 5 in variable "age", not direct.
age           #print age
40              

There’s another technique to change the value of the variable “age.” Take a peek at it as well

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age+=5       #add 5 in variable "age", not direct.
age          #print age
40             

You can conduct various computations on a variable with just a few lines of code, just like you can with addition. Let’s take a closer look

age=25
age-=5  #subtraction
age
20

age/=2   #division
age
15.0    

Sure now have a solid grasp of numbers in Python. Now it’s time to get down to business with some high-level calculations.

Salary=50000
bills=20000
rent=1000
food=5000
savings= Salary -bills-rent-food   
savings
24000

Hurray, Happy Learning,

Okay, start learning something new in the upcoming tutorial.