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...Breadth First Search]. Furthermore a linear BFS is simpler:" # Code by Eryk KopczyĆski def find_shortest_path(graph, start, end): dist = {start: [start]} q = deque(start) while len(q): at = q.popleft() for next in graph[at]: if next not in dist: dist[next] = [dist[at], next] q.append(next) return dist.get(end) Note that this returns the path in a weird form...
...breadth and the lack of general consensus on some aspects, this PEP has been withdrawn and superseded by a simpler PEP 567, which has been accepted and included in Python 3.7. PEP 567 implements the same core idea, but limits the ContextVar support to asynchronous tasks while leaving the generator behavior untouched. The latter may be revisited in a future PEP. Rationale Prior to the advent of asynchronous programming in Python, programs used OS threads to achieve concurrency. The need for th...
...breadth of possible normalizations were kept to things that could easily be implemented as part of the parsing of the version and not pre-parsing transformations applied to the versions. This was done to limit the side effects of each transformation as simple search and replace style transforms increase the likelihood of ambiguous or "junk" versions. For an extended discussion on the various types of normalizations that were considered, please see the proof of concept for PEP 440 within pip [5]....