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hey guys welcome back to this channel if
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you're new then welcome to this channel
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well I'm back with one more interesting
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video and today we are going to talk
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about the input function in Python
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so far we have learned about variables
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data types numeric expressions all cool
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stuff right but up until now all our
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code just sat there running on its own
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so which we wanted to make our code talk
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to the user like actually ask for
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something well today we're going to
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learn exactly how to do that with the
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input function in Python trust me once
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you learn how to get input from the user
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your programs will instantly feel
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smarter and more interactive
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so yeah let's jump in
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so first let's start with what is input
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so what is this magical input function
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well input is actually a built-in
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function in Python that lets your
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program to pause and ask the user a
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question and grab the user's response
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something like this like you could see
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here like for example if you take name
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equal to and now I'm using input
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and now when you run this
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or you can just print the name
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like for example if you run this here
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John and now it's printing the John as
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output so here if you see the program
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actually stopped here at this particular
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point and it is asking you for the name
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whatever the name you can give whatever
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the name you want and you can just print
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let me rerun it once again i think I
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have done something wrong when hitting
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on run can just add lucky and just hit
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enter so this is what
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it will do so Python is actually
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listening to me now exactly that's the
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so let's break it down to a bit more so
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in this line if you see here input enter
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your name so input is actually a
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function so the text inside the quotes
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is the prompt like it's what the user
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will see so it is what the user will see
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user will not see the entire code right
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you'll just see enter your name and
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whatever the user types in gets stored
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so the name lucky is stored inside the
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variable name so then we use that value
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right away in the next line by just
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printing it pretty cool right
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so now here is a super important detail
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a lot of beginners miss like the value
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you get from input is
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so the value you get from input is
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always always a string even if the user
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types a number like 25 Python still sees
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it as 25 not the number 25 so if you try
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to do a math with it things will break
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okay and print age and now you're adding
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sorry so this should be H
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now when you run this
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see you got a big error you don't even
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know what's going on here so Python's
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going to throw a fit here like because
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you are trying to add a number to a
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string because this is a string and you
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are adding number to a string and that's
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so if you want to actually use numbers
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that user gives you you need to convert
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them first like I can show you here so
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if you want integer as input then you
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have to give int of input
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if you want string then you have to you
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don't have to give string because it
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will take the inputs to string by
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default so you don't you don't have to
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worry about that like now if you try
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and if you see here 25 and now it added
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five to that 25 because Python now know
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that it is an integer
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so this is what you have to remember so
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here we are actually converting the
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input to an integer using int method so
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Python knows we want to do math with it
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so if the user types 25
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Python stores it as a number 25 not the
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string 25 and we can add one or you can
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add even five no problem
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i want you to try this yourself like
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let's play with one more example like
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this time it should be in float i want
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and it should be the float as input and
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then you have to print
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1.5 or it could be 1.10 whatever the
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value that you want to print so yeah I
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want you to do this exercise
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i want you to pause at this particular
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point and I want you to do this
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but I can show you how also so input
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enter the price of the item
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now we want this in float right so we'll
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give float here first thing we have to
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close this now we'll try again
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then it it will add 1.5 to it and
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multiply 1.5 to it and it's 3.75
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actually we just created a simple
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calculator that adds some percentage of
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tax to whatever the number that user
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enters just make sure that you're using
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float here if you expect a decimal and
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integer if you expect a whole number
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so you can actually even combine what
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you have learned so far into something
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cool and simple like for example
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name equal to input because it will
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it'll be in string so you can add
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something like what's your name
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and age equal to we need this in integer
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and now you can just print
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hi space and now we are going to add the
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string here so when adding strings you
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have to give this plus operator and
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i hope you are getting me don't worry
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I'll explain once again in 5 years
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age 25 maybe hi lucky in 5 years you'll
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be 30 now we are actually using both
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string and integer mixing text and
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numbers so here we are mixing text and
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numbers and giving a nice human response
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that's the kind of code people love i
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hope you got this so whenever you are
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adding one like this is a string and
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this is a string so when you'll add
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it'll be a string again so hi name lucky
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and we need this in 5 years in 5 years
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comma you will be so this is a number so
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you cannot add this with the strings so
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if you try adding this with the strings
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then it will give you error
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like when you try running this so when
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you're adding these then if you try
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again like for example let me run this
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sorry it's 25 or 26 whatever so here you
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are seeing the error can only
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concatenate string not integer so the
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Python is not getting it it is an
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integer and why are you adding it with
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now it's it's a big no no again so that
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is why you have to give comma here so
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that Python can understand to keep
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things separate even for it to manage
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so this is how it will exactly work so
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we have learned the input input method
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which will lets your program to ask for
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user input so whatever the user types is
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always stored as a string and to do math
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or logic you need to convert it using
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and you can then use the input in any
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way you like you can print it you can
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multiply it combine it with other data
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and totally up to you so this might seem
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small but trust me once your code can
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interact with people it's a total game
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changer if you found this helpful go
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ahead like the video and subscribe to
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the channel and tap that bell icon so
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you don't miss the next part where we
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are going to dive into printing output
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with some cool formatting tricks thanks
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for watching keep coding and I'll see
