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This video covers the basics of the print statement in python for python for beginners so you can start your coding journey! We will cover the python print and how to use the print function to display text and variables.
Variables in Python - https://youtu.be/E2_zTGuTNIw
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0:01
Hey guys, welcome back to this channel.
0:03
If you're new, then welcome to this
0:04
channel. Well, I'm back with one more
0:06
interesting Python basics series. So, I
0:10
think you guys are following me in this
0:12
journey of Python series. I hope you you
0:14
have followed each and every single
0:16
video. If you haven't, then I'm going to
0:18
keep the link of the playlist in the
0:20
description. You can just go there and
0:22
check what's going on and then you can
0:24
come here and you can continue learning
0:25
from here.
0:29
Okay, very quick question. What's the
0:31
very first thing almost every programmer
0:34
does when learning a new language? So
0:37
yeah, you guessed it. We print hello
0:41
world on the screen. It's like a ride of
0:44
passage, right? And that's exactly what
0:47
we are talking about today, which is the
0:50
print function in Python.
0:53
So whether you want to show a message to
0:55
the user, check your variables or debug
0:58
your code, you'll use print all the
1:01
time. So let's break it down.
1:06
All right. So what is print exactly?
1:10
So think of print like your program's
1:13
voice. Like it doesn't affect or change
1:16
your variables or calculations. It just
1:20
takes what you give it and displays it
1:23
to the screen. So it's super useful when
1:26
you want your code to talk to you or the
1:29
user. So let's start with the simplest
1:31
example, the famous hello world program.
1:34
So you can just type print
1:37
open brackets in quotes hello because
1:40
it's a string and world.
1:46
Okay, that's it. Just type print add
1:49
your message in quotes and Python will
1:52
show it in your terminal.
1:55
So let's go through the important
1:58
details. Now let's talk about a couple
2:00
of important details that can trip
2:02
beginners up. But let's just run that
2:05
first and you can just see the hello
2:08
world message. So now let's talk about
2:11
important things that we have to
2:13
remember when we are working with print.
2:16
So in Python 3 like even Python have
2:20
multiple versions don't worry about that
2:22
but keep this in mind.
2:25
In Python 3 you must put parentheses
2:30
after print. So this is correct.
2:34
But
2:38
this this
2:44
this will not work.
2:47
Always keep this in mind because if you
2:49
see don't forget the parenthesis because
2:52
it is already throwing the error on your
2:54
face saying that it is expecting
2:56
something else. So always keep that in
2:59
mind that these things are really really
3:01
important.
3:04
So whenever you want to print text you
3:07
need to wrap it either with single
3:09
quotes or with double quotes. Both will
3:13
work fine. Always keep that in mind
3:16
because if you give that in quotes it
3:18
will understand that oh this is some
3:20
text that user want to show. So I don't
3:23
have to bother about that. I just have
3:25
to display it. So that's what Python
3:27
thinks when you give whatever you want
3:30
in quotes and it will assume it as a
3:32
text and then it will print accordingly.
3:38
So always keep this in mind
3:42
or you can try either this or you can
3:44
try
3:49
Python is fun.
3:54
Both will work.
4:01
So this is what happens when you run
4:03
this.
4:07
Wait, one more question. Do quotes
4:10
matter if I am printing a number.
4:15
Like for example, if I print
4:19
45 here, will that be any problem?
4:23
That's a great question. Let's see.
4:26
So if you print like this and if you
4:30
either print like this, let's see both
4:32
will let's check whether both will work
4:35
or not. See if you see both are working
4:39
but actually the case is different in
4:41
both of them.
4:44
Like here Python will treat 45 as a
4:46
number and it will print directly. But
4:49
here Python is actually treating it as a
4:53
text because it's in quotes. So it will
4:56
take it as a text but it will print
4:58
anyway because that its job.
5:02
So, Python will treat this as a text
5:05
which is string and it will print 45 as
5:08
a word.
5:10
But here, Python will take it as a
5:12
number and it will print 45 anyway. But
5:14
it's a number. So numbers, no quotes at
5:18
all. And text actually needs quote.
5:23
So now let's print a variable.
5:27
If you have if you guys didn't know what
5:30
exactly is a variable and why we use
5:32
this in programming, please go through
5:35
the variable uh video as well. I've made
5:37
it already. You can just go there and
5:39
check why we use it and what exactly a
5:41
variable is. I suggest you to go there,
5:43
check and then come back here.
5:51
So let's give a variable called maybe
5:54
text equal to
5:59
Hello world.
6:03
Okay.
6:04
So to print this variable's value you
6:08
just have to do print
6:12
text.
6:15
So actually previously if you check we
6:18
have kept it inside here but now what we
6:22
have done is we created a variable and
6:26
we stored this value inside the variable
6:28
and then we are printing it.
6:32
So this is what we are doing exactly.
6:39
So this will if you run this one.
6:46
So this will show
6:49
the variable.
6:51
But but if you do this accidentally like
6:57
because you you might assume that this
6:59
is a string and we need this in a
7:01
string.
7:03
So you might think that it is a text and
7:06
it is a string and we have to keep this
7:07
in quotes. This will not work for sure
7:10
if you see because it will actually
7:13
print text. So, Python will literally
7:16
print the letter, you know, the
7:19
characters text, not your variable
7:22
because you've wrapped it in quotes and
7:25
Python thinks it's just text.
7:29
So, without quotes, it will print the
7:31
value of the variable, but with quotes,
7:33
it will print the exact text that you
7:36
typed.
7:39
So now let's see
7:42
how to print
7:46
multiple items with commas.
7:54
So how to print multiple items with
7:56
commas? So one of the coolest things
7:58
about print is that you can print
8:01
multiple items at once by separating
8:03
them with commas. Python will add spaces
8:06
automatically like you can just check
8:08
here like for example name equal to
8:12
John
8:15
and now age equal to 25
8:18
and now you just have to print
8:22
hello
8:30
my name is
8:36
common
8:40
and
8:45
I am
8:47
and we need age here
8:54
years old.
8:59
So hello my name is John and I am 25
9:03
years old. Let's just check.
9:07
See if you see hello my name is John and
9:09
I'm 25 years old.
9:11
So no need for complicated string
9:13
concatenation which is you know plus in
9:17
between. For example if you do plus here
9:20
let's see what happens just like that.
9:24
Anyway we we are doing string.
9:31
So plus only works with string string
9:35
not string with number string with any
9:38
other data type. It will not work. If
9:41
you see there's something wrong we have
9:43
done
9:45
because age is a number. If you see the
9:48
name is good but age will not work. So
9:52
here you have to convert it to string
9:54
and then you have to do it like if you
9:56
keep this in string then it might work.
10:03
See but you have to give the spaces
10:05
because you are concatenating it. So it
10:08
will not create the spaces in between.
10:11
So this is really complex. So instead
10:14
you can just keep comma in between and
10:17
then you can make it work right instead
10:18
of making it really complex by
10:21
concatenating the strings.
10:24
So this is how you can print multiple
10:26
items at once by just separating them
10:29
with commas. So Python will add spaces
10:33
automatically.
10:35
Now let's see what are the common
10:37
mistakes that we do with print. So let's
10:42
go over a couple of mistakes I see
10:44
beginners make all the time which is
10:47
missing parentheses
10:49
and I also see
10:52
using quotes when printing variables. So
10:56
that's what I see which is like this. So
10:58
these are the most common mistakes that
11:00
I see most of the time when beginners
11:02
you know working on working on print for
11:05
the very first time. So always keep
11:08
these things in mind. variable is
11:10
completely different from a string. So
11:11
if you give a variable name in string
11:14
then it will directly take it as a
11:16
string. It will not think it as a
11:17
variable. So you you just have to give
11:20
directly variable without strings. Just
11:22
keep that in mind without quotes. Okay.
11:25
So if you have ever unsure what's
11:28
happening, add some clear text before
11:31
the variable to make debugging easier
11:34
like whenever you're printing.
11:39
debugging in the sense you want to check
11:42
what is name like what value is stored
11:45
inside the variable name. So you can
11:47
check this is
11:51
user's name and you can just check by
11:56
giving the name here.
11:58
I think you don't have to give this.
12:06
So here this is user's name. What's the
12:08
name? It's John.
12:11
So this is how you will debug the code.
12:13
Like for example, you you want to check
12:15
whether the name is John or not. Whether
12:18
the name is changing or not according to
12:20
the user's input. So like even we have
12:24
worked with input right? So like for
12:27
example
12:28
name equal to
12:32
it will already in string. So all you
12:34
have to do is just keep input and you
12:37
can just remove this and now you want
12:40
the name from the user. Okay, like for
12:43
example
12:45
if you run this one and if you give
12:48
maybe lucky here and when you enter the
12:52
this is user's name which is lucky. So
12:54
you are checking whether the username is
12:56
storing correctly or not. So this you
12:59
can also use print for debugging as
13:00
well. So that is how we will debug when
13:02
we are working on coding to check each
13:05
and every value is you know working
13:06
right or not the logic is going good or
13:09
not. Sometimes we might not have any u
13:12
errors syntax errors like maybe this
13:16
could be a syntax error and this could
13:18
be a syntax error but sometimes there
13:21
might be errors from the logical point
13:23
of view. So at the time when you want to
13:25
debug when you want to check what's
13:27
going on where we are doing wrong where
13:30
the things are going wrong then at that
13:32
time print will really really help us to
13:35
check whether everything is good or not.
13:40
So this way you can also see the output
13:43
is super readable. It will be easy for
13:46
us to even check up to what line the
13:49
code is working.
13:51
And yeah that's it. You know how to use
13:54
print function in Python
13:57
and you have learned how to print simple
13:59
statements and you have printed numbers
14:03
and variables and you also have worked
14:05
with combining multiple items with
14:07
commas and you worked with uh avoiding
14:11
the common mistakes. So these are the
14:13
most common mistakes. So with print you
14:16
can see what your program is doing which
14:18
is a game changer when you're just
14:20
getting started. And in our next
14:22
episode, we'll combine what we have
14:24
learned about input and print. I've just
14:26
shown you, but you have to still go
14:28
through it more to understand it more to
14:30
work on it more. So, we'll check that as
14:32
well. And
14:36
so, that is how we will build your, you
14:38
know, first interactive mini application
14:41
and it's going to be really, really
14:42
awesome. Just trust me. And if you found
14:45
this video helpful, don't forget to
14:47
like, subscribe, and hit the bell icon
14:49
so you don't miss what's coming next.
14:52
And thanks for coding with me.
14:54
[Music]