CPSC120B
Fundamentals of Computer Science I

Cool Computer Science Thing of the Day

• Robot Taxis

Reading Questions

Quiz

• quiz 6

Assignment 2 Posted

Emacs Tip of the Day

• M-/ auto complete

Reusing Variables

• Can assign a variable a value multiple times

  x = 1
  x = 2
  print(x)

• Why do this?

• Note, the order matters

Updating Variables

• Can even update a variable using it’s own value

  x = 1
  x = x + 1
  print(x)

• Can do this because of the order of operations

• Assignment is always last, so can read value, compute new value, assign new value

Accumulating

• Updating variable values is most useful in a loops

• For example computing the sum of a series

  sum = 0
  for i in range(10):
      sum = sum + 1
  print(sum)

Lab

• lab6