17.1 Module.pdf

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Module

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A module can contain predeﬁned variable , functions , classes and we use

this things in diﬀerent programs with the help of import

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Modules are nothing but python ﬁles . Normal programs can be modules

too

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Lets save this program as ModuleOne

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And this program as MyProgram

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In program ModuleOne we are deﬁning the function and in program

Myprogram we are calling the function ( add , sub )

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What happens if we write print function in ModuleOne program??

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it will print that function in MyProgram output

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If we want to execute only MyProgram.py but not ModuleOne.py(add and

subtract ) print function

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For this we can ass print

(__name__)

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It means the printing should be done only if its in main . If it is importing

then don’t execute the print function

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We can also write

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