Windows 8.1 / 10在while循环中崩溃if语句

Question

我有一个简单的代码块，可以在Windows 7机器和Ubuntu机器上完美运行，但是当我尝试在8.1 / 10上运行它时会冻结。我不确定为什么。我已经尝试过代码变体的3.0 / 3.6 / 2.7解释器，但它仍然冻结。有没有人有办法解决吗？违规代码是底部的if / else语句。

from graphics import *
def main():

  lowx = -10.0
  highx = +10.0
  lowy = -10.0
  highy = +10.0
  incx = 0.1

  points = []
  x = lowx
  while x <= highx:
      # y = EvaluatePostfix(postfix, x)
      if x > 0:
          y = x * x
      else:
          y = x * x * x
      points.append((x, y))
      x += incx

  # Graph
  win = GraphWin("My Graphing Calculator", 700, 700)
  win.setCoords(lowx, lowy, highx, highy)
  for i in range(len(points) - 1):
      p1 = Point(points[i][0], points[i][1])
      p2 = Point(points[i + 1][0], points[i + 1][1])
      line = Line(p1, p2)
      line.draw(win)

  while (True):
      user = input("type your answer")
      if user == "hello":
          print("there")
      else:
          print("bad")

  win.getMouse()  # Pause to view result
  win.close()  # Close window when done


main()