''' Purpose: continue string manipulation introduction
'''

print()

# Operator [] is the string index operator -- it provides access to
# a string subsequence. Depending upon its operands it is all called
# subscripting and slicing. Here we only care about subscripting.
# The subscript is an index value. In Python index values start at 0.

print( "### [] is the string index operator" )
s = "obliviator"

n = len( s )

print( "s =", s, )
print( "    0123456789" )

print()

print( "n = len( s ) =", n )

print()

print( "### If the [] operand is an integer value, it is subscripting" )
x = s[ 0 ]
y = s[ 4 ]
z = s[ n-1 ]

print( "s[ 0 ] = ", x )
print( "s[ 4 ] = ", y )
print( "s[ n-1 ] = ", z )