[Maya-Python] how to intercept escape key press inside a loop

[oglop]

hi , i want to break from a loop if user press escape key, how could i do 
that ?
under linux , so no msvcrt,  is there a platform independent way ?


for i in range (1,100):
    if not escape pressed:
        currentTime(i) # simming syflex, so this step is slow



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