Input And Output Basics

In This Video I Explained About Input And Output Basics In Python.

Inputs and Outputs Basics :
Take Input From User :

input() allows flexibility to take the input from the user.
Reads a line of input as a string.

Code : username = input()
print(username)

Input : Ajay

Output : Ajay

Working with Strings :

String Concatenation : Joining strings together is called string concatenation.

Code : a = "Hello" + " " + "World"
print(a)

Output : Hello World

Concatenation Errors : String Concatenation is possible only with strings.

Code : a = "*" + 10
print(a)
Output : File "main.py", line 1
a = "*" + 10
^
TypeError:
can only concatenate str (not "int

String Repetition : * operator is used for repeating strings any number of times as required.

Code : a = "*" * 10
print(a)

Output : *********

Code : s = "Python"
s = ("* " * 3) + s + (" *" * 3)
print(s)

Output : * * * Python * * *

Length of String : len() returns the number of characters in a given string.

Code : username = input()
length = len(username)
print(length)

Input : Ravi

Output : 4

String Indexing : We can access an individual character in a string using their positions (which start from 0) .

These positions are also called as index.

Code : username = "Ravi"
first_letter = username[0]
print(first_letter)

Output : R

IndexError : Attempting to use an index that is too large will result in an error:

Code : username = "Ravi"
print(username[4])

Output : IndexError: string index out of range

Previous Video Link : https://youtu.be/s5C29s32AN4

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