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By anonymous or lamda function and anonymous function means there is a function which has got no name.

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So how do you define anonymous function or Landen function in Biton?

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We shall be discussing that one in this session.

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So in Python, the anonymous function is a function that is defined without having any name.

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So in normal function definitions, we use that the key word there is a defined tool and on the other

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end in Python, the anonymous functions are used using the lambda keyword.

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So hence anonymous functions are also called the lambda function.

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So in case of anonymous functions, there will be no name.

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So we are not using the key word def that is a defined and here will be using the keyword.

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That is that lambda.

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So I think it would be better to let us go for one demonstration to show you how to write the anonymous

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functions and then the lambda functions in our python coding.

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While defining ordinary functions, we use the key word, if there is a defined but in case of LAMDA

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function, we shall be using the key word lambda.

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So here we are having some set of examples to clear your doubts and to know that what is an anonymous

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function or a lambda function?

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So here you can find that lambda X, so X will be the input and it returns X start to that because the

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returns are double up to X and that has been assigned to a.

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So in Python, anonymous function is a function that is defined without the name and it is defined by

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the key word lambda.

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So now if we pass this 10 as input argument to this E, then obviously I'm supposed to get double often.

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So if I put my code, I can find that double of ten is 20.

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So here X is input and it returns.

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This external to that is a double of X here.

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So let us go for the another one.

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So making a new list by taking only the event numbers from the old list.

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So here is my old list.

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So it is my, my list and it is having are set up.

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Numbers are there and here you are using one method, one function that is known as a filter function,

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which is called with all the items in the list that is on my list.

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It will be it will be working on all the items of this my list, and it will create a new list which

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will be returned, which contains items for which the function evaluates.

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True.

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That means that we are having one condition.

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The condition will be true if X is an even number, because X percent D2 means that the remainder of

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the division of by two.

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If it is zero, that means if the number X is even number, then X percent is will be equal to zero,

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then the respective X will be returned.

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So now that will create a new list.

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So if I bring that new list, it will print here for six, eight and 12 respectively.

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So let us go for the output here.

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So if I execute on finding that the new list is having the value for six, eight and 12 because they

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are the only event numbers in this my list.

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So this filter is actually dealing with those numbers which will satisfy this condition.

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That is X percentage is is equal to zero and it will operate on a new list on my list and it will produce

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output in the new list here.

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So let's go for another example of this lambda function.

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So here you can see that a program to double each item in a list using the map.

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So here we are losing the method map here.

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So my list is having one, five, four, six, eight, 11, three and very arbitrary numbers we have

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mentioned here.

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Now we are having this lambda, which will take this X and it will return to Stridex and the values

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of X will be taken individually from this list that is on my list here and that will be mapped.

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So here we are using this method to map here, which will double each item in a list using this map

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method.

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And here the outcome is being done, the typecasting to list.

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So now the new list will be getting the list as well.

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So now what will be the output?

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So let's go for the execution.

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You can find that all the members in this particular list, there is a list, members have got doubled

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and that has been assigned to the new list.

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So this map is actually mapping this this lambda function to each and every element of this.

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My list and its outcome will be has been done typecast with this list method.

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And so that new list has been formed.

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And later we have printed the new list as well.

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So in this example, we have shown you that how to define lambda.

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That is the anonymous function in our Bitan.

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Thanks for watching this video.