#4 Python Tutorial for Beginners | Variables in Python

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In this lecture we are discussing variable in python:
Variable: It is a container where we can put our value
e.g
x=2 #here x is variable and 2 is value
x+3
5
y=3

Note:If I want to use output of previous operation so we use underscore (_)
_+y
8 # previous output 5 and y is 3

Use String as a variable:
-- Strings in python are surrounded by either single quotation marks, or double quotation marks.
-- e.g "shiva" ,'shiva'

Assign String to a Variable:
-- Assigning a string to a variable is done with the variable name followed by an equal sign and the string:
name='shiva'
name
shiva

Slicing String:
we can return a range of characters by using the slice syntax.
Specify the start index and the end index, separated by a colon, to return a part of the string.

-- Get the characters from position 2 to position 5 (not included):
name='youtube'
name[2:5]
'utu'

Slice From the Start:
name[:5] #from starting to index 5 (exclude)
'youtu'

Slice To the End:
name[2:] #from 2nd index to end
'utube'

Negative Indexing:

0 1 2 3 4 5 6 #positive indexing
y o u t u b e
-7 -6 -5 -4 -3 -2 -1 #Negative indexing

name[-1]
'e'

name[:-1]
'youtub'
name[:]
'youtube'
name [:0]
''
name[-5:-2]
'utu'

Concatenate String:
name+ ' telusko'
'youtube telusko'

More Learning :

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[Telusko]

Navin Reddy has 11 characters (including space between two words)

[motheakanksha]

Making such a effort without expecting anything and explaining with lots of clarity is really awesome, and huge respect to you

[ajitsakri]

1. print(r '\n') means print as it is.
2. _ (underscore represents) result of last.
3. name[-1] last digit of array
4. name[-2] last but digit of array
5. name[0:2] if name = ajit it will print 'aj'
6. name[0:3] if name = ajit it will print 'aji'
7. len(name) it will print 4(length of the ajit)
8. if a = ajit a[1:3] - when you print this it will give "ji" not "jit" because indexing excludes the last letter.

[nezzylearns]

I have been studying python for about 3-4 months now. Your enthusiasm is contagious. I had so much fun learning this😁

[chughprabhkirat]

Output -
Telusko \n Rocks
Since at start of the string you've mentioned r which stands for raw string, it means that the string will be printed as it is(in a raw state) no special meanings will be considered.

[sagarthoke]

Wanted to learn Python from last 2 years but unable to continue interest and now you're here 😍
Loving the sessions

[predatorishi]

most energetic teacher on YouTube.. tbh one of the best teachers I have ever seen in my life.

[roshnikrishna]

First time ever in my life listening carefully with full interest on one pgming language lecture...the same lecture on these topics by my faculty made me sleep so hard😝...great effort and concept is easily understandable...Thanks a lot sir.

[HarrisTheHypnotist]

Just started this because I was frustated with Java courses. This is much simpler! thank you sir!!

[kartikjswl]

You're a GOD'S GIFT to us!! ♥️ Couldn't imagine to learn something with such fun, thank you Navin 💯

[aishwaryasrikanth]

Never knew python is enjoyable this way. Thanks for it.

[sagarsonar]

Print (100*respect)
Love the way you tech nivin sir..
Learning during corona holiday 😁

[atharvasachan]

much better than code with harry playlists . He is atleast starting this from start not like harry u have started his series from quiet a high level

[Amr-Ibrahim-AI]

Thanks Navin for your wonderful series. Your way of explaining thse concepts is exemplary. Easy and to-the-point.
I used to teach C lanuage 20 years ago, and I like the way you are doing this very much.
Thanks for taking the time to simplify this. Bless you

[shreyashshinde]

I never thought python so easy programming language by listening this awesome lecture...
Thank you so much Navin Reddy Sir...

[studymaterial]

Your explanations are very easy to understand and anyone who is struggling to learn programming before can learn easily just by watching your sessions

[mannemsrikanth]

Output for quiz question:
Telusko \n Rocks
Thank you sir for clear explanation, , after executing codes you are saying wow its working☺, that's good sir. You are changing the way of learning, keep going on navin sir. I am suggesting all my friend's to watch your channel

[abhilashdevarakonda]

name='navin reddy'
respect='nosire'
print('thank you ' +name+' '+respect[2:5])

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Love python from a such a talented and interactive teacher sir

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previously i was not in the mood to learn python, but your videos made me do so