Initialize Expression Property

If LW Python is in the "not_expr" state and the next statement to execute is an expression, then update LW Python's internal "Expression" to the expression. More formally,

"Expression" is data that LW Python uses internally to track which expression is currently being evaluated. Thus, "Expression" is set to the current expression, whether it is a constant, variable, or a function call.

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 = 5
• expression state at time 0 = "not_expr"

then the expression at time (0 + 1) = 5

Try clicking "Next" on the simulator to see the "Expression."

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