我已经查看了有关此错误的其他几个问题，但我仍然无法弄清楚错误是什么。
要选择单位，我有从类中抽取的列表/数组：
unit_orc_grunt = Unit("Grunt",[35,70,105,140,175,210,245,280,315,350],[35,70,105,140,175,210,245,280,315,350])
positions = numpy.array([
[unit_orc_grunt.locationx[0],unit_orc_grunt.locationy[0]],
[unit_orc_grunt.locationx[1],unit_orc_grunt.locationy[1]],
[unit_orc_grunt.locationx[2],unit_orc_grunt.locationy[2]],
[unit_orc_grunt.locationx[3],unit_orc_grunt.locationy[3]],
[unit_orc_grunt.locationx[4],unit_orc_grunt.locationy[4]],
[unit_orc_grunt.locationx[5],unit_orc_grunt.locationy[5]],
[unit_orc_grunt.locationx[6],unit_orc_grunt.locationy[6]],
[unit_orc_grunt.locationx[7],unit_orc_grunt.locationy[7]],
[unit_orc_grunt.locationx[8],unit_orc_grunt.locationy[8]],
[unit_orc_grunt.locationx[9],unit_orc_grunt.locationy[9]],
])
not_selected = [
positions[0],
positions[1],
positions[2],
positions[3],
positions[4],
positions[5],
positions[6],
positions[7],
positions[8],
positions[9]
]
selected = []
然后我在游戏循环中有这个：
elif button_type[0] == 1:
for position in positions:
if numpy.any(position == not_selected) and numpy.any(position != selected) and mouse_position[0] >= position[0] and mouse_position[0] <= position[0] + character_width and mouse_position[1] >= position[1] and mouse_position[1] <= position[1] + character_height:
selected.append(position)
print("Position = ",position)
print("Selected Units = ",selected)
这样可以正常工作，然后从列表中选择所选单位＆＃39;然而，当我尝试添加行not_selected.remove(position)时，我收到错误：
elif button_type[0] == 1:
for position in positions:
if numpy.any(position == not_selected) and numpy.any(position != selected) and mouse_position[0] >= position[0] and mouse_position[0] <= position[0] + character_width and mouse_position[1] >= position[1] and mouse_position[1] <= position[1] + character_height:
selected.append(position)
print("Position = ",position)
print("Selected Units = ",selected)
not_selected.remove(position)
The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()
为什么selected.append(position)有效但not_selected.remove(position)在这里无效？我该如何解决这个问题？