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Hello welcome to this tutorial.

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And in this tutorial we will talk about the attribute double underscore name I mean the command prompt

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now and I have started the Python interpreter before performing any operations in the Python interpreter.

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I'm going to call the D I add function so let's call this function d I and he had the desired function

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has returned the list of objects in the current scope the double underscore Bolton's is a module the

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double underscore dog attribute is a string that can be used for documentation of a method or a function

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clause etc..

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And then we have the double underscore name which we are going to talk about in detail.

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Now let's see what are the different attributes available in the Bolton's module.

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So let's pass this to the desired function so these are the different attributes that are available

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to us.

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And here we can see a lot of functions that we have been using the print function the idea function

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input and on a host of other functions that we have been using.

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And without even importing any module we have access to all of the modules in this building module.

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Now coming to the double underscore the name attribute let's print this out and this attribute has been

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assigned a value double underscored mean when we start python.

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There are a few environmental objects that are set up and by default the attribute double underscored

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name is assigned a value main as you can see here Python interpreter has assigned a value Maine to this

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attribute w underscored name and here I have created a file.

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And in this file we have defined a function.

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Hello.

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And this brings the text hello world.

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No.

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And then we are also going to print the attributes available in the namespace of the module.

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And we're going to check the value of the attribute double underscored.

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Name and every module that we create has a built in attribute double underscore name.

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And we are going to run this script and see what value has been assigned to this attribute.

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Double underscored need.

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So let's execute this script from the command prompt in your window system.

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You can pass the positive part of your test script as an argument to the Python interpreter not to execute

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the file directly going to say Python space.

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And then the part of your program or your module and then hit enter so using the desired function we

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have rendered the attributes that are available in the namespace of the module.

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And here we have the double underscore name as an attribute.

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Now using the print function again we want to see the value that has been assigned to this attribute.

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Double underscored.

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Name and this time as well.

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The python interpreter as a sign the value main double underscored main to this attribute.

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And then we have a call to the function.

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Hello.

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So we have directly executed the script or the module.

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And as we can see when we directly execute a script the double underscore name attribute has been assigned

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this value double underscore Main.

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Now I'm going to import this same module and see what the value of this attribute is going to be this

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time when we import the module.

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So let's do that.

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No let import the script.

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Import test is the module name and then enter here.

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The first line here displays the list of attributes available in the namespace of the module.

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So we have the double underscored.

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Name and then we have a print function which displays the value of this attribute w underscored name.

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This time it has been assigned the name of the module test.

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This is the module that we have imported.

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When we have executed a module directly bypassing the module to the Python interpreter.

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The attribute double underscore name has been assigned this value double underscore mean then we have

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imported the module the attribute double underscore name has been assigned the value that is the module

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name a module can discover whether or not it is joining in the main score by checking its own double

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underscored.

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Name attribute.

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So a module can discover if it is being executed directly like this or if any external program is importing

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this module into its current scope using this attribute double underscored.

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Name if it is being executed directly as a standalone program.

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This is the value that the module that the attribute WMD code name get assigned.

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If it is being imported the module name gets assigned to the attribute w underscored.

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Name or when a python interpreter execute a script before executing the script it defines a few special

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variables for example.

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The double underscored name variable and by default it is set to double underscored made in a module

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can discover whether it is being executed just as a standalone program or if it is being imported using

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this variable or the attribute double underscored.

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Name and if the module is being imported to an external program and the attribute double underscored

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name get the value of devalue module name or the file name.

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This condition can be used in a module in order to execute a piece of code.

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A block of code so when the module is executed directly this condition becomes true.

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And this block of code gets executed if a module is imported by an external program then this condition

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becomes false and they skip executing this block of code.