List Initial State Property

List evaluation begins by changing the expression state from "not_expr" to "begin_expr. More formally,

if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = Python list elements
  • expression state at time t = "not_expr"

then expression state at time (t + 1) = "begin_expr"

For example,

if the following are true:

  • the line at time 0 = 1
  • the tab at time 0 = 0
  • statement at line 1, tab 0 = [2, 4, 6]
  • expression state at time 0 = "not_expr"

then expression state at time (0 + 1) = "begin_expr"

Try stepping through the simulator to see the "Expression State" change to "begin_expr."

Code Editor
LW Python State
Current Line1Current Tab0Time0
LW Python Simulator

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