728x90
함수 또는 메소드라고 불리우는 것들
이미 우리는 초등학교때부터 함수라는 것을 배웠다.
내가 프로그래밍을 하면서 함수에대해서 가장 이해가 빠르게 됐었던 그림이다.
함수는 정말 매력적이다. 흔히들 function이 무슨 뜻이냐 했을때 함수면 이과 기능이면 문과
중, 고등학교때 함수면 함수고 기능이면 기능이지 왜 다른 뜻을 가졌냐라며 투덜댔었는데, 이제는 왜 이런 뜻들을 가지게 됐는지 확실히 알게 됐다.
프로그래밍에서 함수도 마찬가지다 어떤 매개변수가 들어가면 그 매개변수들로 특정 기능을 수행해서 그 결과를 반환하는 일을 하는 것
def add(x,y):return x+y
print(add(2,5))
def sub(x,y=3): return x-y # 매개변수의 초기값을 설정할 수 있다.
print(sub(2))
print(sub(2,4))
def order(drink, many): # 이런식으로도 사용가능하다!
return f"You ordered {many} cups of {drink}"
print(order("coffee", 3))
파이썬에 내장되어있는 함수들을 알아보자.
FunctionDescription
| abs() | Returns the absolute value of a number |
| all() | Returns True if all items in an iterable object are true |
| any() | Returns True if any item in an iterable object is true |
| ascii() | Returns a readable version of an object. Replaces none-ascii characters with escape character |
| bin() | Returns the binary version of a number |
| bool() | Returns the boolean value of the specified object |
| bytearray() | Returns an array of bytes |
| bytes() | Returns a bytes object |
| callable() | Returns True if the specified object is callable, otherwise False |
| chr() | Returns a character from the specified Unicode code. |
| classmethod() | Converts a method into a class method |
| compile() | Returns the specified source as an object, ready to be executed |
| complex() | Returns a complex number |
| delattr() | Deletes the specified attribute (property or method) from the specified object |
| dict() | Returns a dictionary (Array) |
| dir() | Returns a list of the specified object's properties and methods |
| divmod() | Returns the quotient and the remainder when argument1 is divided by argument2 |
| enumerate() | Takes a collection (e.g. a tuple) and returns it as an enumerate object |
| eval() | Evaluates and executes an expression |
| exec() | Executes the specified code (or object) |
| filter() | Use a filter function to exclude items in an iterable object |
| float() | Returns a floating point number |
| format() | Formats a specified value |
| frozenset() | Returns a frozenset object |
| getattr() | Returns the value of the specified attribute (property or method) |
| globals() | Returns the current global symbol table as a dictionary |
| hasattr() | Returns True if the specified object has the specified attribute (property/method) |
| hash() | Returns the hash value of a specified object |
| help() | Executes the built-in help system |
| hex() | Converts a number into a hexadecimal value |
| id() | Returns the id of an object |
| input() | Allowing user input |
| int() | Returns an integer number |
| isinstance() | Returns True if a specified object is an instance of a specified object |
| issubclass() | Returns True if a specified class is a subclass of a specified object |
| iter() | Returns an iterator object |
| len() | Returns the length of an object |
| list() | Returns a list |
| locals() | Returns an updated dictionary of the current local symbol table |
| map() | Returns the specified iterator with the specified function applied to each item |
| max() | Returns the largest item in an iterable |
| memoryview() | Returns a memory view object |
| min() | Returns the smallest item in an iterable |
| next() | Returns the next item in an iterable |
| object() | Returns a new object |
| oct() | Converts a number into an octal |
| open() | Opens a file and returns a file object |
| ord() | Convert an integer representing the Unicode of the specified character |
| pow() | Returns the value of x to the power of y |
| print() | Prints to the standard output device |
| property() | Gets, sets, deletes a property |
| range() | Returns a sequence of numbers, starting from 0 and increments by 1 (by default) |
| repr() | Returns a readable version of an object |
| reversed() | Returns a reversed iterator |
| round() | Rounds a numbers |
| set() | Returns a new set object |
| setattr() | Sets an attribute (property/method) of an object |
| slice() | Returns a slice object |
| sorted() | Returns a sorted list |
| @staticmethod() | Converts a method into a static method |
| str() | Returns a string object |
| sum() | Sums the items of an iterator |
| super() | Returns an object that represents the parent class |
| tuple() | Returns a tuple |
| type() | Returns the type of an object |
| vars() | Returns the __dict__ property of an object |
| zip() | Returns an iterator, from two or more iterators |
출처 : https://www.w3schools.com/python/python_ref_functions.asp
Python Built-in Functions
Python Built in Functions Python has a set of built-in functions. Function Description abs()Returns the absolute value of a number all()Returns True if all items in an iterable object are true any()Returns True if any item in an iterable object is true asc
www.w3schools.com
728x90
300x250
