a function type is not allowe
时间: 2023-09-27 12:08:30 浏览: 46
d in Python. However, you can create a function that takes another function as an argument and returns a function. This is called a higher-order function.
For example, here's a higher-order function that takes a function f and returns a new function that applies f to each element of a list:
```
def apply_func_to_list(func, lst):
def new_func():
return [func(x) for x in lst]
return new_func
```
You can then use this function like this:
```
def square(x):
return x ** 2
my_list = [1, 2, 3, 4, 5]
# create a new function that applies square to each element of my_list
new_func = apply_func_to_list(square, my_list)
# call the new function to get the result
result = new_func()
print(result) # prints [1, 4, 9, 16, 25]
```
Note that the return value of `apply_func_to_list` is a function (in this case, `new_func`). This is an example of a function that returns a function, which is a common pattern in higher-order functions.