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x
origin = (0,0)
legal_x = [-100,100]
legal_y = [-100,100]
def dess(pos_x = 0,pos_y = 0):
def moving(dire,step):
nonlocal pos_x , pos_y
new_x = pos_x + step * dire[0]
new_y = pos_y + step * dire[1]
if new_x < legal_x[0]:
pos_x = legal_x[0] - (new_x - legal_x[0])
if new_x > legal_x[1]:
pos_x = legal_x[1] - (new_x - legal_x[1])
else:
pos_x = new_x
if new_y < legal_y[0]:
pos_y = legal_y[0] - (new_y - legal_y[0])
if new_y > legal_y[1]:
pos_y = legal_y[1] - (new_y - legal_y[1])
else:
pos_y = new_y
return pos_x , pos_y
return moving() << --------------------------------------- # 为啥去掉括号就可以执行了?
move = dess()
print('向右移动10步后,位置是:', move([1, 0], 10))
print('向上移动130步后,位置是:', move([0, 1], 130))
print('向左移动10步后,位置是:', move([-1, 0], 10))
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