tart a fresh instance of Excel and put =pfeEval("a") in any cell.
The ControlShell instantly pops up with the following message.
Such result is exactly the same as if one would type eval("a") in the addin
Let us now give a value to the variable "a" in the addin shell. Press
<Ctrl>+<Enter> to switch to the addin shell and give the variable
"a" a value as shown on the picture.
Select the range a1:c3 in the Excel and type =pfeEval("a")
<Ctrl>+<Shift>+<Enter>. There result is shown below.
The Python function eval and in-cell function pfeEval cannot evaluate
assignments. For this reason the function pfeCmd is provided. pfeCmd evaluates
any expression but does not return a value.