I have an array of functions and I'm trying to produce one function which consists of the composition of the elements in my array. My approach is:
def compose(list):
if len(list) == 1:
return lambda x:list[0](x)
list.reverse()
final=lambda x:x
for f in list:
final=lambda x:f(final(x))
return final
This method doesn't seems to be working, help will be appreciated.
(I'm reversing the list because this is the order of composition I want the functions to be)
The easiest approach would be first to write a composition of 2 functions:
def compose2(f, g):
return lambda *a, **kw: f(g(*a, **kw))
And then use reduce
to compose more functions:
def compose(*fs):
return reduce(compose2, fs)
Or you can use some library, which already contains compose function.