What are Python's type "objects" exactly? -


I'm just starting to learn Python I'm looking for some kind of difficult system to understand, I have many questions , But mainly to reduce and short story; States:

"All data objects in a Python program are represented by ... each object has an identity, a type and a value."

No problem, but beyond that it was not really told that "objects" are for example, even in docs it is not covered that it is " Objects "support a dot operator - from my POV, there may be something in the memory data structure that allows the user to type in id () , type () etc. Although I have gathered some underlying meta object interfaces which are described in the type of object for the docs. To work with example:

If I do a class instance like "x": 

  x.__ class____________________> I get the name of its class Understand that The document describes the properties of  class examples  and  classes  type items of  __ class __  and  __name__ . If I do this  [] .__ class __.__ name___  I get the "list" Similarly  int (1) .__ class_______________ Int ". Running under the hood, and I need clarification. So my questions are:  
     
  •  What is the relation between the type of object types type objects and class objects?  
  •  Can I assume that the underlying type objects in the Meta API are similar to "Class Insert" type objects?  
  •  If so, what is this interface and where is it the document?  
  •  In general, what  are  "objects" that correspond to the underlying type, and how are they implemented?  
     
     
     I will answer the first 1,2 question, then 4 if 3: / p> 
       
    •  "What type of" objects "and" class instances "type objects?"  
    •  "Can I assume ~ Meta API for in-built type objects" class The instance is similar to "typed objects?"   
       They are similar, and yes, they share a common API. When "objects" or class instances describe "objects" or anything made as type of class or "object" ... they are talking about building exactly the same language.  
         
      •  "In general," objects are "what are ..."   
         Object is a basic language feature in Python which features other OOPL features and Supports Behavior. All the Python objects have classified OOPL classes as well. The class hierarchy in Python is the base  object  class. Thus all classes are subclasses of  objects  class, and  all  examples of the above "objects" and  object  - through legacy.  
         It first clearly indicates that in Python (2.2 and above) "Type" and "Square" (for all intense purposes) Therefore, "int", and the rest are the so-called manufactured types of classes (which are definitely shown as objects). For example, to make a  x = int (1)  call  int  class (object) to create an int frequency object, x  
         It is right to say that Python has two types of objects; "Type" objects, or those that represent the type, and "non-type" objects - who do not, but it is equally true that there are two types of integers; Zero, and not zero does not mean: everything in Python is an object with classes since the class creates an  type  object, so they are all examples of a class named "type". Type object is also an example of type. Note that you can inspect the succession hierarchy of the class by checking the __bses__ attribute of the class object. In all cases it leads to the course of the  object  class - of course. See for more information about this.  
           
        •  "... where is all this documented?"   
           OK, in fact it is a good question, it should be included in this section, but it is a kind of skimmed. Constructor for object objects, objects (which have been created) are manufactured and documented in a bilintin. Apart from this, nothing has been included in this area.

Comments

Post a Comment

Popular posts from this blog

Verilog Error: output or inout port "Q" must be connected to a structural net expression -

I get the error every time, I try to compile. I'm not sure why anyone can help is? I'm new to verilog. Module D_FF (clerk, d, reset_n, q); Input D, Clack, reset_en; Output Q; reg Q; lab4_gdl f1 (.lk (~ clk), d (d), .q.m (qm)); lab4_GDL f2 (.Clk (Clk), D (QM), .Q (Q)); Always start at @ (posedge clk, neggeous reset_n) (Reset_n == 0) Q & lt; = 0; Other questions & lt; = D; Edit End: The problem is what we are asking to do: In this section, you apply the memory / registration circuit on the AlterEdie 2 board. will do. The circuit has the following specifications: The present value of swift SW15-0 on the D2 board should be shown in four hexadecimal four sections of HEX3-0. This part of the circuit will be combination logic. To use an active-less asynchronous reset and KEY1 to use KEY0 as the clock input, you must store SW15-0in in a 16-bit register in the value The register should be enabled to have a 16-bit positive edge, which uses the embedded D flip-flo
Read more

jasper reports - How to center align barcode using jasperreports and barcode4j -

I use iReport 5.5.0 . How to align a barcode component to the center The relevant piece of my jrxml is below & Lt; JR: Code 128 xmlns: JR = "http://jasperreports.sourceforge.net/jasperreports/components" xsi: schemaLocation = "http://jasperreports.sourceforge.net/jasperreports/components http: //jasperreports.sourceforge Purge / xsd / components.xsd "textPosition =" bottom "& gt; & Lt; Jr: codeExpression & gt; & Lt; [CDATA [$ F {number}]] & gt; & Lt; / Jr: codeExpression & gt; & Lt; / Jr: Code 128 & gt; & Lt; / componentElement & gt; "Text" itemprop = "text"> Create a style after this, it is called "barcode", like: & lt; Style name = "barcode" fontName = "Helvetica" fONTSIZE = "10" hAlign = "center" valign = "center" /> and set the property of your barcode element to "barcode".
Read more

c# - ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type already has the same primary key value -

In brief, the wrapper module is inserted during posting and the status of an entry is changed to 'modified' . Before changing the state, the state is set to 'separate', but calling attachments () causes the same error to be thrown away. I am using EF 6. Model / wrapper class public class avi model {public A is a {get; Set; } Public listing & lt; B & gt; B {received; Set; } Public cc {receipt; Set; }} Administrator edit public functioning (int? id) {if (id == null) {new HttpStatusCodeResult (HttpStatusCode.BadRequest); } If (! Conveyor Access (id.Value)) new HTTPTitus code result (HTTP status code. Forbidden); Var aViewModel = new AViewModel (); aViewModel.A = db.As.Find (id); If (aViewModel.Receipt == zero) {return HttpNotFound (); } aViewModel.b = db.Bs.Where (x => x.aid == id.Value) .Oolist (); AViewModel.Vendor = db.Cs.Where (x => x.cid == aViewModel.a.cID) .FirstOrDefault (); See Return (aViewModel); } [HTPFost] [Valid AntitiferousTeacon
Read more