Machine Learning Tutorial Python : 6. Python Number and Arithmetic Operators
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Python for Beginners - This video explains about the Python Number and Arithmetic Operators
Note: Use HD view for clear text visible
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Agenda :
What is Data Type?
Types of Data Types
Types of Python Numbers
Identifying the Variable Types
What are Operators in Python?
Types of Operator
Arthimetic Operators
Rule of Precedence in Python
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What is Data Type?
It is an attribute that tells what kind of data that value or a variable can have it.
Example:
rollnumber = 12345 # rollnumber is integer
name = "Anand" # name is string
marks = 80.5 # marks is float
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Standard Data Types
Python has five standard data types −
1. Numbers
2. String
3. List
4. Tuple
5. Dictionary
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Python Numbers
Python support 3 different numerical types :
1. Integer
2. Float
3. Complex Number
i = 50 # Number without decimal point - Integer
f = 3.14 # Number with decimal point - Float
x = 2 + 3j # Number consists of both real and imaginary value - Complex Number
print(i,f,x)
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Identifying the Variable Types
type()- inbuilt function which is used to determine the type of the variable.
print(type(i))
print(type(f))
print(type(x))
class 'int'
class 'float'
class 'complex'
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What are Operators in Python?
Operators are special symbols in Python that carry out arithmetic or logical computation. The value that the operator operates on is called the operand.
Example :
10 + 5 = 15.
Here, + is the operator that performs addition. 10 and 5 are the operands and 15 is the output of the operation.
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Types of Operator
Python language supports the following types of operators.
1. Arithmetic Operators
2. Comparison (Relational) Operators
3. Assignment Operators
4. Logical Operators
5. Bitwise Operators
6. Membership Operators
7. Identity Operators
Let us have a look on all operators one by one.
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Arthimetic Operators
Arithmetic operators are used to perform mathematical operations like addition, subtraction, multiplication etc.
Sample Code
x = 20
y = 5
Addition Operator
print('Addition of x + y =',x+y)
Subtraction Operator
print('Subtraction of x - y =',x-y)
Multiplication Operator
print('Multiplication of x * y =',x*y)
Addition of x + y = 25
Subtraction of x - y = 15
Multiplication of x * y = 100
Note: While multiplying Integer and Float value, the result will be a float value.
j= 3 * 1.5
print(j)
print(type(j))
4.5
class 'float'
x = 10
y = 3
Float Division Operator
print('Float Division of x / y =',x/y)
Integer Division Operator
print('Integer Division of x//y =',x//y)
Integer Division for Negative Value
print('Integer Division of Negative Numbers =',-10//3)
x = 10
y = 3
Float Division Operator
print('Float Division of x / y =',x/y)
Integer Division Operator
print('Integer Division of x//y =',x//y)
Integer Division for Negative Value
print('Integer Division of Negative Numbers =',-10//3)
Modulus or Remainder Operator
x = 5
y = 2
print('Modulus of x%y =',x%y)
Modulus of x%y = 1
Exponentiation Operator
x = 4
y = 2
print('Exponentiation of x raise to the power y =',x**y)
Exponentiation of x raise to the power y = 16
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Happy Learning,
Vinoth Rathinam
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