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In this tutorial we will discuss about the topics packing and unpacking DuPont's packing is a simple

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syntax which lets us create two booths without using the conventional notation that is defining a tuple

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without the parenthesis and coming to unpacking Python tuples unpacking happens when we assign while

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use from a tuple to a sequence of variables.

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So let us understand packing and unpacking using some examples

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so here I have defined a tuple without using the conventional notation that means I have defined a sequence

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of elements separated by commas without dependencies when we define tuple like this python.

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Create a tuple of four values and then assigns it to eat.

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So this is what happens python in the background.

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Create a tuple like this by backing.

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So this is known as tuple packing.

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So here I have defined 4D variables name age height and weight in these variables in a tuple have been

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assigned to eight this assignment statement is equal in two 4D assignment statements does when we do

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this assignment python is going to unpack the values in did you pull a and then assign the values to

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the variables defined to the left of the equal to sign.

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So these are the values in did you pull a John

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seven is the age height is three feet then weight is 20 kilos.

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So this assignment statement here at unpacks these values in a and then assigns these values to do that

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ability in remembered the number of values in a tuple have to be equal to the number of variables that

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we have defined to the left of the equal to sign.

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The concept of tuple packing and unpacking could be used for swapping while used say for example I have

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defined two variables X and Y.

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X contains the value to whereas y contains three.

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So the values in X and Y can be swapped using this statement.

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And python in the background.

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Forced convert these sequence of values to a tuple so it first backs the values into a tuple and Y indexed

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contain the values 3 and two and here X and Y and the next step is to unpack the values in y and x so

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the value in y that history is assigned to debatable X the value 2 is assigned to the variable right

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now x contains three and Y contains two.

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So we have swapped values using tuple packing and unpacking.

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So here I have defined a variable a containing four elements separated by commas and once I execute

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this line Python would pack all of these values into a tuple.

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So let us now display a so a is a triple as you can see it has been enclosed in parentheses.

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Now I'm going to define four variables name and then age height and weight in a tuple and assign this

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to the two.

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Eight as we know this single statement here is equal to four different but four separate assignment

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statements.

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That means the values in e are assigned to the variables that we have defined to hold and remember the

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number of variables on the left should be equal to the values.

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That is the values in tuple 8.

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So let's execute this line and then check the value assigned to the variable name the variable name

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has been assigned the value John or the string.

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John H is 7 8 is 3 feet right.

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So the values have been unpacked from the tuple a and then assigned to the variable on the lift.

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And this is known as tuple unpacking now say for example you define your defined three variables in

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a tuple here and then assigned to the tuple eight.

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So when you execute this line of code this is the letter that you get.

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So while you idiot and it says too many values to unpack and then we have also discussed about swapping

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of values.

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So let's define known to variables x and then Y.

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Now we're going to swab devalues the values in debatable X and Y.

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So this statement on as discussed it is going to back the values in white comma X as you can see here

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and then this tuple is going to be unpacked in the next step and then assigned to the variables x and

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y that are to the left side of the equal to sign no let's display X X is three and Y is two.