Python Built-in Functions

Python Built-in Functions and Methods Guide

Numeric Functions

abs

Returns the absolute value of a number.

Syntax: abs(number)

num = -10
abs_num = abs(num)
print(abs_num) # Output: 10

divmod

Returns the quotient and…


This content originally appeared on DEV Community and was authored by Harsh Mishra

Python Built-in Functions and Methods Guide

Numeric Functions

abs

  • Returns the absolute value of a number.
  • Syntax: abs(number) 
num = -10
abs_num = abs(num)
print(abs_num)  # Output: 10

divmod

  • Returns the quotient and remainder of division.
  • Syntax: divmod(x, y) 
quotient, remainder = divmod(10, 3)
print(quotient, remainder)  # Output: 3 1

max

  • Returns the largest item in an iterable or among arguments.
  • Syntax: max(iterable, *args, key=None) 
numbers = [1, 5, 2, 8, 3]
max_num = max(numbers)
print(max_num)  # Output: 8

min

  • Returns the smallest item in an iterable or among arguments.
  • Syntax: min(iterable, *args, key=None) 
numbers = [1, 5, 2, 8, 3]
min_num = min(numbers)
print(min_num)  # Output: 1

pow

  • Returns x to the power of y.
  • Syntax: pow(base, exp, mod=None) 
result = pow(2, 3)
print(result)  # Output: 8

round

  • Rounds a number to a specified precision in decimal digits.
  • Syntax: round(number[, ndigits]) 
num = 3.14159
rounded_num = round(num, 2)
print(rounded_num)  # Output: 3.14

sum

  • Returns the sum of elements in an iterable.
  • Syntax: sum(iterable, start=0) 
numbers = [1, 2, 3, 4, 5]
total = sum(numbers)
print(total)  # Output: 15

String Methods

chr

  • Returns the string representing a character whose Unicode code point is the integer.
  • Syntax: chr(i) 
char = chr(65)
print(char)  # Output: 'A'

format

  • Formats a specified value into a specified format.
  • Syntax: format(value, format_spec) 
formatted = format(123.456, ".2f")
print(formatted)  # Output: '123.46'

ord

  • Returns the Unicode code point for a given character.
  • Syntax: ord(c) 
unicode_value = ord('A')
print(unicode_value)  # Output: 65

str

  • Returns a string version of an object.
  • Syntax: str(object='') 
num_str = str(123)
print(num_str)  # Output: '123'

Container Methods

dict

  • Creates a new dictionary.
  • Syntax: dict(**kwargs) or dict(iterable, **kwargs) 
my_dict = dict(name='John', age=30)
print(my_dict)  # Output: {'name': 'John', 'age': 30}

frozenset

  • Returns an immutable frozenset object.
  • Syntax: frozenset([iterable]) 
my_frozenset = frozenset({1, 2, 3})
print(my_frozenset)  # Output: frozenset({1, 2, 3})

list

  • Returns a list object.
  • Syntax: list(iterable=()) 
my_list = list(range(5))
print(my_list)  # Output: [0, 1, 2, 3, 4]

set

  • Returns a new set object.
  • Syntax: set([iterable]) 
my_set = set([1, 2, 3])
print(my_set)  # Output: {1, 2, 3}

tuple

  • Returns a tuple object.
  • Syntax: tuple([iterable]) 
my_tuple = tuple([1, 2, 3])
print(my_tuple)  # Output: (1, 2, 3)

Type Conversion Functions

bool

  • Returns the boolean value of an object.
  • Syntax: bool([value]) 
bool_value = bool(0)
print(bool_value)  # Output: False

float

  • Returns a floating-point number from a number or string.
  • Syntax: float([x]) 
float_num = float("3.14")
print(float_num)  # Output: 3.14

hex

  • Converts an integer to a lowercase hexadecimal string prefixed with '0x'.
  • Syntax: hex(x) 
hex_value = hex(255)
print(hex_value)  # Output: '0xff'

int

  • Returns an integer object from a number or string.
  • Syntax: int([x]) 
int_num = int("123")
print(int_num)  # Output: 123

oct

  • Converts an integer to an octal string prefixed with '0o'.
  • Syntax: oct(x) 
oct_value = oct(8)
print(oct_value)  # Output: '0o10'

Other Functions

all

  • Returns True if all elements of an iterable are true.
  • Syntax: all(iterable) 
items = [True, True, False]
print(all(items))  # Output: False

any

  • Returns True if any element of an iterable is true.
  • Syntax: any(iterable) 
items = [False, False, True]
print(any(items))  # Output: True

bin

  • Converts an integer to a binary string prefixed with '0b'.
  • Syntax: bin(x) 
bin_value = bin(5)
print(bin_value)  # Output: '0b101'

enumerate

  • Returns an enumerate object that yields tuples of index and value.
  • Syntax: enumerate(iterable, start=0) 
letters = ['a', 'b', 'c']
for index, value in enumerate(letters):
    print(index, value)
# Output:
# 0 a
# 1 b
# 2 c

filter

  • Constructs an iterator from elements of an iterable for which a function returns true.
  • Syntax: filter(function, iterable) 
def is_even(num):
    return num % 2 == 0

numbers = [1, 2, 3, 4, 5]
even_numbers = list(filter(is_even, numbers))
print(even_numbers)  # Output: [2, 4]

map

  • Applies a function to all items in an input iterable.
  • Syntax: map(function, iterable, ...) 
def square(x):
    return x ** 2

numbers = [1, 2, 3, 4, 5]
squared_numbers = list(map(square, numbers))
print(squared_numbers)  # Output: [1, 4, 9, 16, 25]

sorted

  • Returns a new sorted list from the elements of any iterable.
  • Syntax: sorted(iterable, *, key=None, reverse=False) 
numbers = [5, 2, 3, 1, 4]
sorted_numbers = sorted(numbers)
print(sorted_numbers)  # Output: [1, 2, 3, 4, 5]

super

  • Returns a proxy object that delegates method calls to a parent or sibling class.
  • Syntax: super([type[, object-or-type]]) 
class Parent:
    def __init__(self, name):
        self.name = name

class Child(Parent):
    def __init__(self, name, age):
        super().__init__(name)
        self.age = age

child = Child("John", 10)
print(child.name, child.age)  # Output: John 10

Input and Output Functions

input

  • Reads a line from input, converts it to a string (stripping a trailing newline), and returns it.
  • Syntax: input(prompt) 
name = input("Enter your name: ")
print("Hello, " + name + "!")

print

  • Prints objects to the text stream file, separated by sep and followed by end.
  • Syntax: print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False) 
print("Hello", "World", sep=", ", end="!\n")
# Output: Hello, World!


This content originally appeared on DEV Community and was authored by Harsh Mishra


Print Share Comment Cite Upload Translate Updates
APA

Harsh Mishra | Sciencx (2024-06-27T11:59:54+00:00) Python Built-in Functions. Retrieved from https://www.scien.cx/2024/06/27/python-built-in-functions/

MLA
" » Python Built-in Functions." Harsh Mishra | Sciencx - Thursday June 27, 2024, https://www.scien.cx/2024/06/27/python-built-in-functions/
HARVARD
Harsh Mishra | Sciencx Thursday June 27, 2024 » Python Built-in Functions., viewed ,<https://www.scien.cx/2024/06/27/python-built-in-functions/>
VANCOUVER
Harsh Mishra | Sciencx - » Python Built-in Functions. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2024/06/27/python-built-in-functions/
CHICAGO
" » Python Built-in Functions." Harsh Mishra | Sciencx - Accessed . https://www.scien.cx/2024/06/27/python-built-in-functions/
IEEE
" » Python Built-in Functions." Harsh Mishra | Sciencx [Online]. Available: https://www.scien.cx/2024/06/27/python-built-in-functions/. [Accessed: ]
rf:citation
» Python Built-in Functions | Harsh Mishra | Sciencx | https://www.scien.cx/2024/06/27/python-built-in-functions/ |

Please log in to upload a file.



There are no updates yet.
Click the Upload button above to add an update.

You must be logged in to translate posts. Please log in or register.

Related Posts