CODEWITHSUNDEEP
pythonfunctional-programming
rob
rob

Reputation: 173

Compute a chain of functions in python

I want to get the result of a chain of computations from an initial value. I'm actually using the following code:

def function_composition(function_list, origin):
    destination = origin
    for func in function_list:
        destination = func(destination)
    return destination

With each function in function_list having a single argument.

I'd like to know if there is a similar function in python standard library or a better way (example: using lambdas) to do this.

Upvotes: 17

Views: 6594

Answers (1)

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 798606

Fold while calling.

destination = reduce((lambda x, y: y(x)), function_list, origin)

Upvotes: 20

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