1. Source of the error Your Dijkstra algorithm uses…
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1. Source of the error
Your Dijkstra algorithm uses `heapq.heappop(pq)` and `heapq.heappush(pq, ...)`. The **`heapq`** module is a standard Python library that manages priority queues (min-heaps). Since you didn't import it at the beginning of your script, Python doesn't recognize the name and throws the error `NameError: name 'heapq' is not defined`.
2. Correction to apply
Simply add the import statement at the top of your file, before the definition of the Dijkstra function:
```python
import heapq
``` This will make the `heappop` and `heappush` functions available. You don't need to change anything else in your code, as the implementation is correct.
3. Expected Result
With this import, your Dijkstra algorithm will be able to manipulate the priority queue and calculate the optimal path in your ASCII matrix. You will then be able to explore the minimum costs between two coordinates without error. This is an important step: you are combining your Hangman game with a graph algorithm, which enriches your Python learning.
In summary: simply add `import heapq` to the top of your script and your algorithm will work.
Your Dijkstra algorithm uses `heapq.heappop(pq)` and `heapq.heappush(pq, ...)`. The **`heapq`** module is a standard Python library that manages priority queues (min-heaps). Since you didn't import it at the beginning of your script, Python doesn't recognize the name and throws the error `NameError: name 'heapq' is not defined`.
2. Correction to apply
Simply add the import statement at the top of your file, before the definition of the Dijkstra function:
```python
import heapq
``` This will make the `heappop` and `heappush` functions available. You don't need to change anything else in your code, as the implementation is correct.
3. Expected Result
With this import, your Dijkstra algorithm will be able to manipulate the priority queue and calculate the optimal path in your ASCII matrix. You will then be able to explore the minimum costs between two coordinates without error. This is an important step: you are combining your Hangman game with a graph algorithm, which enriches your Python learning.
In summary: simply add `import heapq` to the top of your script and your algorithm will work.
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