''' Purpose: deepen variable manipulation understanding
'''

# first generation
generation  = 1
nbr_rabbits = 2

print( 'Generation: ', generation  )
print( 'Rabbits:    ', nbr_rabbits )

input()

# next generation
generation  = generation + 1 # Evaluate the right hand side so look into the generation
# box, get that value, and update the generation box (value of variable) by adding 1 to the
# value previously in that generation box
# This is called reassignment. When you take a variable already assigned a value,
# and say that that variable is now equal to a new value (updating that value)
nbr_rabbits = 2 * nbr_rabbits

print( 'Generation: ', generation  )
print( 'Rabbits:    ', nbr_rabbits )

input()

# next generation
generation  = generation + 1
nbr_rabbits = 2 * nbr_rabbits

print( 'Generation: ', generation  )
print( 'Rabbits:    ', nbr_rabbits )

input()

# next generation
generation  = generation + 1 # So why doesn't it get that generation value we
# had previously? Because it was updated! So it takes the most recently
# updated value of generation and updates that accordingly
# so we went from 2 rabbits and said multiply that by 2
# now nbr_rabbits is 4 rabbits and
nbr_rabbits = 2 * nbr_rabbits

print( 'Generation: ', generation  )
print( 'Rabbits:    ', nbr_rabbits )

input()

# next generation
generation  = generation + 1
nbr_rabbits = 2 * nbr_rabbits


print( 'Generation: ', generation  )
print( 'Rabbits:    ', nbr_rabbits )

input()