麻烦这个Python新手练习.使用列表并查找两个相邻元素是否相同

Question

这是我得到的:

# D. Given a list of numbers, return a list where
# all adjacent == elements have been reduced to a single element,
# so [1, 2, 2, 3] returns [1, 2, 3]. You may create a new list or
# modify the passed in list.
def remove_adjacent(nums):
  for number in nums:
    numberHolder = number

  # +++your code here+++
  return

我有点被困在这里.我能做什么？

Answer 1

>>> import itertools
>>> [i[0] for i in itertools.groupby([1,2,2,3,3,3,2,2])]
[1, 2, 3, 2]

要么:

>>> def f(l):
...     r = []
...     last = None
...     for i in l:
...         if i != last:
...             r.append(i)
...             last = i
...     return r        
... 
>>> f([1,2,2,3,3,3,4,4,2,2])
[1, 2, 3, 4, 2]