英文:
How to make a list comprehension iterate a function
问题
我们想要使用列表推导来迭代一个函数，例如我们想要的是这样的：
list1 = [3, 1, 2]
list2 = [f(f(f())), f(), f(f())]
这是否可能？
英文:
We want a list comprehension to iterate a function, for example this is what we want:
list1 = [3, 1, 2]
list2 = [f(f(f())), f(), f(f())]
How would this be possible?
答案1
得分: 4
写一个函数，调用一个函数`n`次。然后在列表推导中调用它。
```python
def call_n(func, n, arg):
res = arg
for _ in range(n):
res = func(res)
return res
list2 = [call_n(f, i, initial_value) for i in list1]
<details>
<summary>英文:</summary>
Write a function that calls a function `n` times. Then call that in the list comprehension.
def call_n(func, n, arg):
res = arg
for _ in range(n):
res = func(res)
return res
list2 = [call_n(f, i, initial_value) for i in list1]
</details>
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