Python Built-in Functions and Methods

Basic Operations

print()

Output to stdout

len()

Get sequence length

type()

Get object type

input()

Read user input

Type Conversion

int()

Convert to integer

str()

Convert to string

float()

Convert to float

list()

Convert to list

dict()

Convert to dictionary

set()

Convert to set

List Methods

list.append()

Add item to end

list.extend()

Add iterable to end

list.pop()

Remove and return item

list.sort()

Sort in place

list.reverse()

Reverse in place

Dictionary Methods

dict.get()

Get value with default

dict.keys()

Get all keys

dict.values()

Get all values

dict.items()

Get key-value pairs

dict.update()

Update dictionary

String Methods

str.split()

Split into list

str.join()

Join iterable to string

str.strip()

Remove whitespace

str.replace()

Replace substring

str.format()

Format string

File Operations

open()

Open file

file.read()

Read entire file

file.write()

Write to file

file.close()

Close file

Iterables

range()

Generate number sequence

enumerate()

Index iterator

zip()

Combine iterables

map()

Apply function to iterable

filter()

Filter iterable