behavior of KeyboardInterrupt?

[qua4tre]

During an interactive session where I am variously running computations and plotting things, when I try to keyboard interrupt a running computation, Python apparently gets interrupted instead; for example, notice what happens when I hit Ctrl-C during a while true block:

julia> using PythonPlot

julia> plot(range(0, 1, 101).^2)
Python: [<matplotlib.lines.Line2D object at 0x0000022445A5FF50>]

julia> while true # surrogate for some long computation that I decide I want to interrupt
           5+2
           sleep(0.1)
       end
Error in Timer:
Python: KeyboardInterrupt:
Python stacktrace:
 [1] __getattr__
   @ tkinter C:\Users\zor_q\.julia\environments\v1.9\.CondaPkg\env\Lib\tkinter\__init__.py:2408
Stacktrace:
 [1] pythrow()
   @ PythonCall C:\Users\zor_q\.julia\packages\PythonCall\qTEA1\src\err.jl:94
 [2] errcheck
   @ C:\Users\zor_q\.julia\packages\PythonCall\qTEA1\src\err.jl:10 [inlined]
 [3] pygetattr(x::PythonCall.Py, k::String)
   @ PythonCall C:\Users\zor_q\.julia\packages\PythonCall\qTEA1\src\abstract\object.jl:60
 [4] getproperty(x::PythonCall.Py, k::Symbol)
   @ PythonCall C:\Users\zor_q\.julia\packages\PythonCall\qTEA1\src\Py.jl:261
 [5] (::PythonPlot.var"#9#10"{PythonCall.Py, PythonCall.Py, PythonCall.Py})(async::Timer)
   @ PythonPlot C:\Users\zor_q\.julia\packages\PythonPlot\f591M\src\pygui.jl:199
 [6] macro expansion
   @ .\asyncevent.jl:281 [inlined]
 [7] (::Base.var"#702#703"{PythonPlot.var"#9#10"{PythonCall.Py, PythonCall.Py, PythonCall.Py}, Timer})()
   @ Base .\task.jl:134

Meanwhile, the while true block continues running. If it were a computation that came to an end at some point, all future plotting would fail (I assume because the background Python process is no longer running?).

Is this the expected behavior? I would have hoped that the execution of the while true block would have been interrupted and Python would have been left alone.

For comparison, when using GR, it's the while true block that gets interrupted:

julia> using Plots # default backend is GR

julia> plot(range(0, 1, 101).^2) # plot window pops up

julia> while true # surrogate for long computation that I decide I want to interrupt
           5+2
           sleep(0.1)
       end
ERROR: InterruptException:
Stacktrace:
 [1] poptask(W::Base.IntrusiveLinkedListSynchronized{Task})
   @ Base .\task.jl:974
 [2] wait()
   @ Base .\task.jl:983
 [3] wait(c::Base.GenericCondition{Base.Threads.SpinLock}; first::Bool)
   @ Base .\condition.jl:130
 [4] wait
   @ .\condition.jl:125 [inlined]
 [5] _trywait(t::Timer)
   @ Base .\asyncevent.jl:138
 [6] wait
   @ .\asyncevent.jl:155 [inlined]
 [7] sleep
   @ .\asyncevent.jl:240 [inlined]
 [8] top-level scope
   @ .\REPL[3]:3

julia> plot(range(0, 1, 101).^2) # still plots successfully

julia> backend()
Plots.GRBackend()