Python Program to input any string and substring and search for substring and print the occurrence of substring in main string if it is there

 

# To understand find or search and index function

str = input ('Enter any sentence: ')

str=str.lower()

print (str)

ch = input ('Enter character to be found: ')

occ= int (input('Enter occurance of character to be found: ') )

c=str.count(ch)

if (occ>c):

    print ('Not Found')

else:

    for j in range (len(str)):

        i=str[j]

        if i==ch:

            c-=1

        if c==0:

            print (occ,'occerance of ',ch,' is at position:',j)

            break