為基本問題道歉，我是 Python 新手，正在努力尋找答案。
如何為loaded_route串列中的每個專案執行以下if 陳述句？
即檢查第一個loaded_route值，更新位置，然后檢查下一個值，更新位置等。
我當前的 for 回圈比較整個串列，而不是單個值。謝謝！
location = [1,1]
loaded_route = ['right', 'left']
route_coords = []
for route in loaded_route:
if route == 'right':
location[0] = (location[0] 1)
route_coords.append(location)
elif route == 'left':
location[0] = (location[0] - 1)
route_coords.append(location)
elif route == 'up':
location[1] = (location[1] - 1)
route_coords.append(location)
elif route == 'down':
location[1] = (location[1] 1)
else:
print('failed to read loaded_route')
uj5u.com熱心網友回復：
location是串列型別，而串列在 Python 中是“可變的”。這意味著每次添加location到 時route_coords，您只是插入對 的參考location，允許不斷更改。
相反，您希望將當前位置值復制到route_coords.
location = [1,1]
loaded_route = ['right', 'left']
route_coords = []
for route in loaded_route:
if route == 'right':
location[0] = (location[0] 1)
route_coords.append(location[:])
elif route == 'left':
location[0] = (location[0] - 1)
route_coords.append(location[:])
elif route == 'up':
location[1] = (location[1] - 1)
route_coords.append(location[:])
elif route == 'down':
location[1] = (location[1] 1)
route_coords.append(location[:])
else:
print('failed to read loaded_route')
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