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In this article, we will see how to get a substring of a string in Python.

Python strings are sequences of individual characters. Python calls the concept “slicing” to get substring of Python string. Indexing starts from 0 to n-1(length of string -1).

Python Slice Notation:

a[start:stop]  # items start through stop-1
a[start:]      # items start through the rest of the array
a[:stop]       # items from the beginning through stop-1
a[:]           # a copy of the whole array

There is also the step value, which can be used with any of the above:

a[start:stop:step] # start through not past stop, by step 

Continue reading How to get a substring of a string in Python

Python program to reverse a given number

n=int(input("Enter value to reverse: "))
rev=0
while (n>0):
          dig=n%10
          rev=rev*10+dig
          n=n//10
print("Reverse of the number is: ",rev)