Python Addition & Concatenation

In Python, the Arithmetic Operator "+" is used for two different purposes.

We can use it to Add two or more integer or float values.

script.py

1
2
3
4
5
6
7
8
9
#addition of intergers
x = 3 + 5
print("x =",x)
#addition of floats
y = 3.5 + 5.5
print("y =",y)
#addition of float and integer
z = 3 + 5.5
print("z =",z)
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

IPython Shell

1
In [1]: 
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

We can use it to Concadinate two or more string values.

This only works with string data-type.

script.py

1
2
3
4
5
6
7
8
x = "hello" + "world"
print(x)
#convert integer values to string and 
concadinate
y = str(50)
z = str(100)
r = y + z
print(r)
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

IPython Shell

1
In [1]: 
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

You can learn about Type convertions here.

concatenation links the values together without performing any arithmetic operation.

Here are few Arithmetic Operators.

Operator	Description	Example
+ Addition	Adds values on either side of the operator.	10 + 20 = 30
- Subtraction	Subtracts right hand operand from left hand operand.	10 – 20 = -10
* Multiplication	Multiplies values on either side of the operator	20 * 10 = 200
/ Division	Divides left hand operand by right hand operand. Output is a float value.	8 / 4 = 2.0
% Modulus	Divides left hand operand by right hand operand and returns remainder	5 % 2 = 1
** Exponent	Performs exponential (power) calculation on operators	10**2 =100
//	Floor Division - The division of operands where the result is the quotient in which the digits after the decimal point are removed.	9//2 = 4 9.0//2.0 = 4.0 -11//3 = -4 -11.0//3 = -4.0