Python访问循环的正确值

Question

我有：

data = [ {"Bucket": "test", "MountPoint": "/data"}, {"Bucket": "test2", "MountPoint": "/data2"} ]

我使用这个循环访问列表中的值Bucket和MountPoint。你知道吗

my_vals = [val for d in data for val in d.values()]

>>> print(my_vals)
['/data', 'test', '/data2', 'test2']

但是我把Bucket和MountPoint放在我的列表中。现在，我怎样才能通过修改我的for只把MountPoint放到我的列表中呢？你知道吗

谢谢你！你知道吗

Answer 1

https://ideone.com/XR1qOk

data = [ {"Bucket": "test", "MountPoint": "/data"}, {"Bucket": "test2", "MountPoint": "/data2"} ]

my_vals = [d["MountPoint"] for d in data] 

print(my_vals)

Answer 2

一种可能是列表理解（反复阅读dicts）：

data = [ {"Bucket": "test", "MountPoint": "/data"}, {"Bucket": "test2", "MountPoint": "/data2"} ]

buckets = [d["Bucket"] for d in data]      # ['test', 'test2']
mpoints = [d["MountPoint"] for d in data]  # ['/data', '/data2']