python - 访问嵌套在字典python中的元组中的项目

Question

所以我对这本字典有点困惑function返回。 (endpoint_pose 函数)

它似乎是一本字典，带有嵌套字典或元组，我不确定。函数返回的是this

{'position': Point(x=0.7938064310002948, y=0.4000015952566877, z=0.28522708748065545), 'orientation': Quaternion(x=-0.18674837754140436, y=0.7484662663927322, z=-0.5955181308876427, w=0.22423524999844527)}

如何获取 z 坐标位置？

Answer 1

你得到的返回是一本带有 namedtuple 的字典s，因此要访问 z 元素，只需:

from collections import namedtuple

Point = namedtuple('Point', ['x', 'y', 'z'])
Quaternion = namedtuple('Quaternion', ['x', 'y', 'z', 'w'])

mycoords = {
    'position': Point(x=0.7938064310002948, y=0.4000015952566877, z=0.28522708748065545),
    'orientation': Quaternion(x=-0.18674837754140436, y=0.7484662663927322, z=-0.5955181308876427, w=0.22423524999844527)
    }

print(mycoords['position'].z)  # -> 0.28522708748065545
print(mycoords['orientation'].z)  # -> -0.5955181308876427