All language subtitles for 9. Conditional Explained Line by Line

So what is going on in this script?
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Let me explain this one line by line.
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Python executes the function definition but it doesn't do anything because it's just a function definition.
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Python does things when it finds a function call such as this one in here.
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So here we are calling the function and the input value for that function will be a Monday temperature
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which is equivalent to this list.
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So this list will go and be stored in this variable.
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So value is equal to this list.
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OK.
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So what happens is that the interpreter will check if the type of that list is dict. If that is true,
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it will execute this line here.
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So it will assign the
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outputs of this expression to the mean variable.
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However this is not true in this case because type of the list is not a dict.
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So python will not execute this line.
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It will go to the next line.
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So if that was not true then it will do this thing here.
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So the men will be equal to the sum of the list divided by the length of the list which is 9.26
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something.
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So this is the current value of the mean.
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Therefore here the indentation ends.
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So return is outside of the if and else block you can see here, it has to be outside.
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So the conditional block ends here and the current value of the mean will be returned by the return
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statement.
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So you get that mean value for
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that list.
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If this was student grades instead what happens is that this dictionary will be stored in value and
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if type of value is dict.
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Yes it's a dict.
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The men will be equal to that.
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So to the mean of the dictionary.
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And if this condition is true this is executed and python will ignore everything that is under else.
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I said everything that is under else which means everything that is indented under else.
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So the children of else
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So to say, return of the mean is not a child of else,
it's not indented under else.
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It's independents.
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It has its own indentation level.
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So therefore the current value of the mean is this one
in here, so return to the mean will actually
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return the mean for the dictionary, that one in there.