python - List length in a while loop -

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I am writing a program that compares coin to two players. I do not understand why the following while loop prints "Game over", even though the lanes of both lists are 5. When I type the lane (player_x_armi) or responds with the correct 5 then If I "or" from "and" This works fine "

  while len (player_1_army) or len (player_2_army) == 0: print (" game over ")  <

lane (player_1_army) is not zero therefore, or is correct, thus while is looped.

In any Boolean expression, if any number is present, then its evaluation is number! =! 0 .

Instead, you'll need it: 

  Lane (player_1_ army) == 0 or lane (player_2_ army) == 0

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