pythonrecursivefunctionreturnnone

2022年11月26日 — I am making a recursive greedy search function, and this is my code: path = [] def greedy_bfs(graph, start, goal): path.append(start) if ...

2023年1月19日 — I am making a function that will get the top-most parent using recursion. I must be missing some logic because it seems like it should work to ...

2013年10月6日 — You're trying to implement a depth-first search for the rqfile value in the nested dictionary dict. But your current code doesn't handle the ...

2015年7月31日 — 1 Answer 1 ... Recursive calls are just like any other function call; they return a result to the caller. If you ignore the return value and the ...

2010年8月7日 — Look at your function, when depth > 0, it executes function(depth -1), but it returns nothing (hence None). You must write

2020年9月7日 — Hi, I'm learning Python, I guess this must be absolutely silly but it's been driving me mad for hours. I've simplified a lot from ...

The OP has a recursive function, in which the recursive calls misses a return . It thus evaluates to None whenever it recurses. def recurse(n): ...

2022年11月21日 — You need to return the result of the recursion. With how you have it now, the base case returns the result to the previous call, but then it's ...

2022年5月31日 — Without it, your function returns nothing (technically, it returns an object that is used in Python to represent nothingness, namely None ). Not ...