余金恆python內建built-in函數functions迴圈loop
上面style指令要在html模式貼在最上面
<style>h1{text-align:center; background-color:blue; color: white; border: solid medium blue; padding 10px;border: 10px green; border-radius:10px; padding:10px;}
</style>
截圖
程式碼
print(int(10))
print(int("ff",16))
print(int('100',16))
print(int('100',8))
a = [0>1, 2>1, 3==3]#串列list使用square bracket中括號
print("是否all全真",all(a))
print("存在任何any一個真",any(a))
print("劉任昌bin二進位輸出一到9")
for i in range(10): #0 to 9進位1
print(bin(i))
for i in range(0, 200, 10):
print(hex(i))
a = ('蘋果', '香蕉', '櫻桃',"durian")
b = "Hello World"
c = 33
d ={'蘋果', '香蕉', '櫻桃',"durian"}
e=['蘋果', '香蕉', '櫻桃',"durian"]
print("a元組typle", type(a))
print("b字串", type(b))
print("c整數integer", type(c))
print(type(d), type(e))
w3schools內建函數列表
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 |
| 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 |
補充與心得
- int(a,b)將b進位的a轉成10進位
- bin(a)將10進位a轉成2進位
- hex(a)將10進位a轉成16進位
- type(a)呈現a的型態:set集合、list串列、元組tuple、字典dictionary、整數integer、字串string
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