Learn Algorithm Design by Building a Shortest Path Algorithm - Step 24

Tell us what’s happening:

I cant include the ‘inf’ to the code, that erro keep going:

You should assign float('inf') to distances[node] inside your new else clause

Your code so far

my_graph = {
    'A': [('B', 3), ('D', 1)],
    'B': [('A', 3), ('C', 4)],
    'C': [('B', 4), ('D', 7)],
    'D': [('A', 1), ('C', 7)]
}


# User Editable Region

def shortest_path(graph, start):
    unvisited = []
    distances = {}
    for node in graph:
        unvisited.append(node)
        if node == start:
            distances[node] = 0
        else:
            float('inf'(distances[node]))

# User Editable Region

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Challenge Information:

Learn Algorithm Design by Building a Shortest Path Algorithm - Step 24

Welcome to the forum @HttpsGabrisan
image

Your code is not in the correct order, also you need to use the assignment operator.

what would be the correct order?

Try reversing the order.

i tried many other ways i didn’t worked at all

float(distances[node])(‘inf’))

I cannot give the direct answer. Try using the code blocks given in the hint I posted earlier.

when you use the assignment operator you are saying “assing ‘thing on the right’ to ‘thing on the left’”

thing_on_the_left = thing_on_the_right
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