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Python - Recursive Function does not work with len() despite the returned value being a list


By : Umesh Tarsariya
Date : October 17 2020, 08:10 PM
fixed the issue. Will look into that further You have done excellent work, just place 1 in place of [L[-1]] in else part and return 0 in the base case and you are done.
code :
def change(value, L):
    if not L:
        return 0

    if L[-1] > value:
        return change(value, L[:-1])
    else:
        useIt = 1 + change(value - L[-1], L)
        return useIt


print(change(48, [1, 5, 10, 25, 50]))


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How to store the returned object of recursive function in array or list in matlab?


By : Mttime
Date : March 29 2020, 07:55 AM
around this issue I have a recursive function that return several center coordinates(x,y) of image (for example 15 center points).In each loop print the result into MATLAB work space. how can I save them in to array instead of display in output? (disp(s);) , Save stuff at the same line you use disp:
code :
Xstorage(x,y) = sigmax;
Ystorage(x,y) = sigmay;
xtmp = x1:stepsize:x2; %// enter desired stepsize
ytmp = x1:stepsize:x2;
for x=1:numel(xtmp)
    for y=1:numel(ytmp)
        %// calculate stuff on xtmp(x) and ytmp(y) instead of x and y
        Xstorage(x,y) = sigmax;
        Ystorage(x,y) = sigmay;
    end
end
function [xc,yc,Xstorage,Ystorage] = FindCenter(imgs , fontcolor , x1,y1,x2,y2 )

List returned by recursive function truncated and default empty list argument


By : user1456336
Date : March 29 2020, 07:55 AM
Hope that helps The cause of the AttributeError is that the default argument is an empty tuple (), not an empty list []. Now, you're right not to use an empty list as a default argument for various reasons, but since you want to mutate this object, you do need a list.
The solution is to do something like
code :
def podzb(x, lista=None):
    if lista is None:
        lista = []
    ... # rest of function

list returned from recursive function always empty


By : Asrar Khan
Date : March 29 2020, 07:55 AM
should help you out Im trying to return a list from a recursive function, appending to this list for each depth, but the final returned list is always empty. I'm not very experienced pythonian so it might be a trivial mistake. , Here:
code :
def getAllParents(jnt):
    # ...
    prnts = parents.insert(0, getAllParents(prnt))
    return prnts
    parents.insert(0, getAllParents(prnt))
    return parents

How does this recursive function in Python work?


By : Sachin Bala
Date : March 29 2020, 07:55 AM
I hope this helps you . I am learning python from the Book: "ThinkPython". , Your function is:

Why this recursive function doesn't work in python


By : Emily Sternek
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You need to used the absolute file/directory path when checking for file/dir using os.path.isfile or os.path.isdir:
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