In this post, we will learn about the built-in math functions of Python.
Do you know that in Python you can use some built-in functions of Python without using the Math module?
If you do not know, after reading this Python Math built-in function tutorial, you will know and will also learn how to use Python’s in-built function.
First of all, let us know how many built-in math functions are functions in Python that can be used to perform a mathematical operation.
You can see in the list below how many built-in math functions/methods of Python are there:
Python math built-in functions
| Method | Description |
|---|---|
round(number[, ndigits]) |
rounds the number, you can also specify precision in the second argument |
pow(a, b) |
Returns a raise to the power of b |
abs(x) |
Return absolute value of x |
max(x1, x2, ..., xn) |
Returns largest value among supplied arguments |
min(x1, x2, ..., xn) |
Returns smallest value among supplied arguments |
cmp ( x , y ) |
Compare x and y , returning a number. |
hex ( number ) |
Create a hexadecimal string representation of number . |
oct ( number ) |
Create a octal string representation of number . |
int ( string , [ base ]) |
Generates an integer from the string x . |
len() |
The len() function returns the number of items in an object. |
In the list given above, you have seen how many in-built math functions/methods are in Python.
Now we will tell you about every python built-in method/function of the above-given list in detail and also take an example to understand you better.
Round method in Python
In Python, the round method rounded off the given number. If you have not specified how many decimals points to rounding off given number then it rounds the given number in the integer.
Syntax
round(number, digits)
Example: python round method
x = round(5.5)
print(x)
x = round(6.76543, 2)
print(x)
Output
6 6.77
Pow method in python
In python, pow () methods are used to extract the power of a number.Such as x power y (xy).
Syntax
pow(x, y, z)
Example: pow example python
Let us see Python’s built-in pow () method with an example:
x = pow(2, 3)
print(x)
Abs method in python
One more great in-built method is available in Python. In Python, the ABS () method is used when the absolute value of a given number is to be found.
Syntax
abs(n)
Example: ABS method in python
x = abs(-5.50)
print(x)
Output
5.50
Min method in python
In Python, the min() method is used when the smallest value is to be obtained from a list or a given input list.
Syntax
min(n1, n2, n3, …)
Example: python get min of list
x = min(5, 10, 15, 25, 35, 45, 55) # list of items
print(x) // output
Output
5
Max method in python
In Python, the max() method is used when the largest value is to be obtained from a list or a given input list.
Syntax
max(n1, n2, n3, …)
Example: python get max of list
x = max(5, 10, 15, 25, 35, 45, 55) # list of items
print(x)
Output
55
CMP method in python
The CMP() method in Python compares the two given objects and returns a result of 1,- 1, 0.
Syntax
cmp(a, b)
Example: python cmp function
# when x<y
x = 1
y = 2
print(cmp(x, y))
# when x = y
x = 2
y = 2
print(cmp(x, y))
# when x>y
x = 3
y = 2
print(cmp(x, y))
Output
-1 0 1
Python hex method
Use of hex () method in python changed the given number to hexadecimal value.
Syntax
hex(number)
Example: python hex function
x = hex(555)
print(x)
Output
0x22b
Python oct method
Use of oct() method in python changed the given number to octal string.
Syntax
oct(number)
Example: python oct function
x = oct(555)
print(x)
Output
0o1053
int() method in python
The int() method returns an integer object from any number or string.
Syntax
int(x=0, base=10)
Example: string to int in python
# integer
print("int(123) is:", int(123))
# float
print("int(123.23) is:", int(123.23))
# string
print("int('123') is:", int('123'))
Output
int(123) is: 123
int(123.23) is: 123
int('123') is: 123
Python len method
The len() the function returns the number of items in an object.
Syntax
len(object)
Example: get length of list python
mylist = [1, 2, 3, 4, 5]
x = len(mylist)
print(x)
Output
5
