Abs(a): find the absolute value. abs(- 1)
Max(list): Find the maximum value of list. Max ()
Min(list): Find the minimum value of list. Minimum value ()
Sum(list): Find the sum of list elements. sum()& gt； & gt& gt VI
Sorted(list): Sorts and returns the sorted list.
Len(list): list length, len ()
Divmod(a, b): Get quotient and remainder. divmod(5，2)>& gt& gt(2, 1)
Pow(a, b): Get the power number. Pow (2,3) >>> VIII
Round(a, b): Get the decimal of the specified number of digits. A stands for floating point number, and b stands for the number of digits to be reserved. round(3. 14 15926，2)>& gt& gt3. 14
Range (a
Type transformation
Int(str): Convert to int type. int(' 1 ')& gt； & gt& gt 1
Float(int/str): Converts an int or character type to a floating-point type. float(' 1 ')& gt； & gt& gt 1.0
Str(int): Convert to character type. str( 1)>& gt& gt' 1'
Bool(int): Convert to Boolean type. str(0)>; & gt& gtFalse string (none) >>& gt wrong
Bytes(str, code): receives a string and the format to be encoded, and returns a byte stream type. Bytes ('abc',' UTF-8') > & gt& gtB'abc' bytes (U' reptile',' UTF-8') > > & gtb'xe7x88xacxe8x99xab '
List(iterable): convert to list. list(( 1，2，3))& gt； & gt& gt
ITER: Returns an iterable object. ITER()& gt； The list_iterator object at>> & lt0x000000003813b00 >;
Dict(iterable): Convert to dict. dict([('a '， 1)，(' b '，2)，(' c '，3)])& gt； & gt& gt{'a': 1，' b':2，' c':3}
Enumerate(iterable): Returns an enumerated object.
Iterable: Convert to a tuple. tuple()& gt； & gt& gt( 1,2,3)
Set(iterable): convert to set. set()& gt； & gt& gt{ 1, 2,3,4,5} set ({1:'a', 2:'b', 3:' c'}) > & gt& gt{ 1,2,3}
Hex(int): converted to 16. Hexadecimal (1024) > > >' 0x400'
Oct(int): Convert to octal. oct( 1024)>& gt& gt' 0o2000 '
Bin(int): Convert to binary. bin( 1024)>& gt& gt0b 1000000000 '
Chr(int): Convert numbers into corresponding ASCI code characters. Chr(65)>& gt& gt one
Ord(str): Convert ASCI characters into corresponding numbers. order(‘A’)>& gt& gt65
Related operation
Eval**** * * (): Execute an expression or string as an operation. eval(' 1+ 1 ')& gt； & gt& gt2
Exec (): Execute python statement. exec(' print(" Python ")')& gt； > > computer programming language
Filter(func, iterable): filter the eligible elements by judging the function fun. Filter (λ x: x >; 3,)>& gt& gt& lt filters the object at 0x000000003813828 >.
Map (func, * iterated): Use func for each iterative object. map(λa，b: a+b，，)& gt& gt& gt[6,8, 10]
Zip (* iterate): Combines iterative groups. Returns a zip object. list(zip(，)& gt& gt& gt[( 1, 4), (2, 5), (3, 6)]
Type (): Returns the type of the object.
Id (): Returns the unique identification value of the object.
Hash(object): Returns the hash value of an object, and objects with the same value have the same hash value. Hash ('python') >; & gt& gt707080835926 1009780
Help (): Call the built-in help system.
Isinstance (): Determines whether the object is an instance of this class.
Issubclass (): Determines whether a class is a subclass of another class.
Globals (): Returns the dictionary of the current global variable.
Next(iterator[, default]): receives an iterator and returns the value in the iterator. If default is set, the contents of the default will be output after the elements traversed by the iterator.
Reversed(sequence): An iterator that generates a reverse sequence. Inversion ('ABC ')& gt；; & gt& gt['c '，' b '，' a']