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hi everyone my name is jaal today I'm
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going to teach you what if name equals
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main uh is in Python and how it works so
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if name equals main essentially is
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something that you see at the bottom of
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a script telling you if you should
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execute it and what it says is if the
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name equals main then execute uh
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whatever is found inside the python file
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uh but it will only execute if you run
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it directly and not if you import it as
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a module so in order to make that
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clearer uh I'm going to create this main
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module that will essentially just print
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the name here and I will run this to
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make make it clearer so I can do Python
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3 uh main module. pi and if you do this
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you can see that the the name of the
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main If instead I decide that I want to
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import uh main module instead of just
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running so I have this import main
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function that will import the name
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module and essentially it will execute
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this print name so if I do Python 3 in
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this case and I do import main so now
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it's not uh around as the python file
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but as an import module you can see that
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the name of the file the name will
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return is essentially the name of the
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module in which is F found so we can
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Define that it was important imported in
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this case and not important in that case
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so if we look at uh the main module uh
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we can now show how if name equals main
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works so because if I do if
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equals main so in that case if it's run
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something uh and in this case uh it will
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only run if I uh import it
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directly so we can do something uh we
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can define a function in this case we
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can say Okay Main we can create that
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main function and say uh print that it
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was executed and instead of saying do
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something we can say main here
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so essentially what this will do is if I
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run it directly it will print the name
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here and it will print the main function
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was executed and I can also put a na
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statement to decide what I want it to do
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if it doesn't so in order to make it
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clearer I will print the main function
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did not execute so if I save this file I
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can show that I can do python 3E main
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module to Pi and you can see that main
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function was executed when the name was
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a CL qu Main and if I import it you can
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see that the main function did not
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execute so that's basically what it is
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so it's not as complex as it looks like
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um but that's that's all it is so make
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sure that you subscribe to my YouTube
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channel and stay tuned for the next
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video tutorial see you later
