WEBVTT

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Functions are usable piece of code that performs some specific actions that has many built in functions

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and we have already seen some of them like bring in but end range.

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Besides the building functions we can also create our own functions these are called user defined function

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to define a function we use deficit.

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Def then we give function names.

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For example we can see greetings to Brent.

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So this is just a simple function.

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We should bring help

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to you.

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Greetings.

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Call a function.

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We just simply type the name of the function.

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Just say.

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Greetings

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sorry.

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Function can also take arguments

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and we define arguments here.

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Just read

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re

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not call a function with arguments.

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You need to specify some argument here.

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Are you

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we can also give default value to the function argument.

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You can say

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no.

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We call a function without any value to the argument.

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It will bring good morning or else it will bring the value of the Oregon

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let me create a new function.

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We'll do some

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automatic operations so let's define a variable we say X was the equal to it.

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And we said different function wasn't this X Y Z here

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and we say

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x y z equal to fight.

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X was the function

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x y so in functions always remember that the variable defined at the top and the very ill defined end

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function are two different variables.

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It means that this variable is local to this function.

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We cannot access this variable outside the function.

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So here we can say.

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That's what we call a function here.

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Then consider bring

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so it is the side of the

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basically this Brenda statement is referring to this X Y.

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And this Brenda statement is a reference to this X was

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so the variable defined within a function scoring local variable will be named the name here

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run this program.

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For the

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variable x y z in the function of SPI X what is the outside the function is then is a hundred

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if you want to assign a value to the variable defined at the top.

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You want to change this when inside the function.

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We need to use global a statement like we can say global

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global

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x y.

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Now because of this global statement this X Y Z is referent to this X Y as the means.

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Like when you change the value this way you will get changed and at this point the statement will print

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x y z outside of the function.

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Despite let's see

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very

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if there are more than one argument and we want to specify the default value of some of them then we

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need to name the argument

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like here

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and say instead of greetings you can save on

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a comma B equal to hundred or two hundred

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and

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is

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it is the

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B

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D or card keyword arguments.

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Let's does this

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one now.

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If you specify what this function with a single in this way you will be assigned to a

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if you specify words B second where you will be assigned to B

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so the advantage of your arguments is that we don't need to remember the position of the argument like

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if we want to assign value to see but not to be.

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Then we can call a function like this

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we can also define a function with any number of arguments that is arbitrary argument can be done by

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fixing one or the argument with Asterix

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like we can say

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stress me

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and we can sit by and say hey

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Ron now we can call this function with any number of parameters.

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We can also take arbitrary arguments with name by defining an argument would do SRS

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numbers

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and we can say or name calling my number in

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two numbers.

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Items

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brand name

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not.

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Call this function.

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We need to specify name what value

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and again we're going to specify as many name

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and as many values as we like.

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In functions we also have done a statement which is used to break out of the function and can optionally

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return a value let's write a function that compares to EDS and redundant redundant number say buying

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the max X or Y

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X is greater than y

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x

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or a

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statement the like more X equals equal Y

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the

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equal

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x

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return y.

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So this is a simple function you can name it as Max

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on X all the function rent y in the banks between 5 and 6

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bring by Max by.

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So this was one simple example of a return statement.