### Tell us what’s happening:

Describe your issue in detail here.

Hi team. Please assist with this step. Here is my code:

### 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:
node = 0
/* User Editable Region */
```

### Your browser information:

User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0`

### Challenge Information:

Learn Algorithm Design by Building a Shortest Path Algorithm - Step 23

https://www.freecodecamp.org/learn/scientific-computing-with-python/learn-algorithm-design-by-building-a-shortest-path-algorithm/step-23`Preformatted text`