Difference: IntroductionToNopIoTAndPython (8 vs. 9)
Revision 92019-06-13 - IsaacArmahMensah
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Slide 1: Introduction to Internet of Things (IoT) | |||||||||
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The operand to the left of the = operator is the name of the variable and the operand to the right of the = operator is the value stored in the variable. | |||||||||
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Data Types in PythonPrograms store data in one form or the other and must be of a certain type. | |||||||||
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| We have seen conditions already in the very first example | |||||||||
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LoopsA loop statement allows us to execute a statement or group of statements multiple times. | |||||||||
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| We can therefore find out if the module is imported or executed by checking the name variable: | |||||||||
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| < < | if _name_ == "__main__" | ||||||||
| > > | _if name_ == "__main__" | ||||||||
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this executes the main code only if not imported into a main program
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The syntax for creation of classes is similar to functions | |||||||||
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| You may define a method with name __init__which is called when | |||||||||
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| < < | the instance object of the class is created (in the above example: mc = !<a href="https://afnog.iotworkshop.africa/do/edit/AFNOG/MyClass?topicparent=AFNOG.IntroductionToPython;nowysiwyg=0" rel="nofollow" title="MyClass (this topic does not yet exist; you can create it)"> MyClass </a> () | ||||||||
| > > | the instance object of the class is created (in the above example: mc = MyClass) | ||||||||
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| < < | The short description of the class can be found in the instance variable _ _doc__ | ||||||||
| > > | The short description of the class can be found in the instance variable __Doc.__ | ||||||||
Classes Example | |||||||||
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| A very typical example of a python library is matplotlib for plotting. | |||||||||
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Callbacks | |||||||||
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