Complete sorting of python built-in functions and python built-in functions

Complete sorting of python built-in functions and python built-in functions

Python has many built-in functions and types that you can use at any time. The following lists them in alphabetical order.

1

abs(X)

Returns the absolute value of a number. The parameter can be an integer or a floating point number. If the parameter is a complex number, its modulo is returned.

2

• all(Iterable)

  WhenIterableWhen all elements are True (orIterableNull), returns True. Equivalent:

  
  

3

any(Iterable)

WhenIterableIf the element is True, True is returned. IfIterableIf it is null, False is returned. Equivalent:

4

ascii(Object)

Just like a functionrepr()Returns a printable string of the input object, but removes non-ASCII characters from the returned string.repr()Encoding is used in the generated string.\x,\uOr\UPrefix. The string generated by this function correspondsrepr()Functions are similar.

5

bin(X)

Converts an integer to a binary string. The result is an available Python expression. IfXNot in PythonintType, You need to define__index__()Returns an integer.

6

bool([X])

Converts a value to a boolean type and uses the standard true value to determine the process. IfXIs false or does not exist, will returnFalseOtherwise, returnTrue.boolIt is also a class, yesintSubclass,boolThe class cannot be any other subclass. Its only instance isFalseAndTrue.

7

• bytearray([Source[,Encoding[,Errors])

  Returns a new byte array. ThisbytearrayType is a variable integer sequence in the range of 0 <= x <256. It has a common method for most variable sequences described in the variable sequence type, andbytesType has most of the methods.

  OptionalSourceParameters can be initialized in several different ways:

  If no parameter is specified, an array with a size of 0 is created.

1: If yesString, You must also provideEncoding(And optional)Error) Parameter;bytearray()Then convert the string to bytestr.encode().

2: If it isIntegerThe array will have this size and will be initialized with NULL bytes.

3: if it is consistentBuffer ZoneInterface, the read-only buffer of the object will be used to initialize the byte array.

4: If it isIteratableIt must be an iteration of integers in the range and they are used as the initial content of the array.0 <= x < 256

8

bytes([Source[,Encoding[,Errors])

Returns a new "Byte" object, which is an integer sequence in an unchangeable range. Is an unchangeable version-it has the same non-Variant Method and same indexing and slicing behavior.0 <= x < 256

Therefore, the constructor parameters are interpretedbytearray(). Byte objects can also be created using text.

9

• callable(Object)

  TrueIfObjectThe parameters are displayed as callable,FalseReturns. If true is returned, the call fails, but if false, the call fails.ObjectIt will never succeed. Note that classes are callable (call a class to return a new instance); if their classes have__call__()Method, then this instance can be called

• New Features of version 3.2:

  New Feature in version 3.2: this feature is first deleted in Python 3.0 and then brought back in Python 3.2.

10

chr(I)

The return value indicates that the Unicode code point is an integer.I. For example,chr(97)Returns a string.'a'. This is the oppositeord(). The valid range of the parameter is from 0 to 1,114,111 (base on 16 0x10FFFF ).ValueErrorIfMeOutside this range, it will be proposed.

Note that in a narrow Unicode version, the result is a string of 2 characters.MeIt must be greater than 65535 (hexadecimal format of 0xFFFF ).

11

classmethod(Function) returns a class method for the function.

The class method receives the class as the first implicit parameter, just as the instance method receives the instance. To declare the method of a class, use this idiom:

Class C: @ classmethod def f (cls, arg1, arg2 ,...

The@classmethodThe form is a function decoration-see the function definition to describe the details of the function definition.

It can beC.f()) Or instance (suchC().f(). This instance is ignored except its class. If the class method is called for a derived class, the derived class object is passed as the first implicit parameter.

The class method is different from the C ++ or Java static method. If you want this, seestaticmethod()This section.

For more information about class methods, see the standard type hierarchy in the standard level documentation.

12

compile(Source,Filename,Mode,Flags = 0,Dont_inherit = False,Optimize =-1)

Compile the source code into code or AST object. Code objects can be exec () or eval (). The source can be a string or an AST object. For more information about how to use ast objects, see the module documentation.

This file name parameter should be read from the code. If it is not read from the file ('<string>' is usually used), some identifiable values will be passed.

This mode parameter specifies what code must be compiled; it can be 'exec '. If the source contains a sequence of statements,'eval'If it is expressed by a single, or'single'If it is declared by a single interactive statement (in the latter case, the calculation result is a statementNoneWill be printed ).

Optional parameter flags and dont_inherit control which future statements affect source compilation. If neither of them exists (or both are zero), the code will be compiled together with the future statements in the code that is calling compile. IfFlagsThe parameter is given andDont_inheritIf it is not (or zero ),FlagsFuture statements specified by the parameter and the statements to be used. IfDont_inheritIs a non-zero integerFlagsThis parameter is the parameter-future declarations around compilation calls will be ignored.

In the future, you can use bitwise OR to specify the bit of multiple statements. Specify the bit fields required for the specified feature ascompiler_flagProperty found._Feature__future__

ParametersOptimizeSpecify the compiler optimization level; default value of the option-1Select the interpreter optimization level-O. Explicit level is0(Not optimized;__debug__Yes ),1(Assertions are deleted,__debug__Is false) or2(Docstrings is also deleted ).

SyntaxErrorIf the compilation source is invalid andTypeErrorThis function is triggered when the source contains NULL bytes.

Note:

• Input code in multiple lines'single'Or'eval'When compiling a string in mode, the input must be terminated by at least one line break. This is to facilitatecodeModule to detect incomplete and complete statements.

  In version 3.2, change:

  Change in version 3.2: allow the use of Windows and Mac line breaks. In'exec'In this mode, the input does not end with a line break. Added optimization parameters.

The built-in function is now ......

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From: http://docspy3zh.readthedocs.io/en/latest/library/functions.html