Walker?

https://www.pygit2.org/commit_log.html describes a Walker object, but does not explain how to get one or how to use it. Are we to infer that the the iterator produced by the call to Repository.walk() immediately above is an object of type Walker? When I debug that seems to be the case.

For example, if heads is a list of heads and w a Walker, will

for h in heads:
    w.push(h)
    for cmt in w:
        do_stuff(cmt)

call do_stuff exactly once (i.e., the walker remembers and ignores commits already visited on later calls) for each commit in my repository that is reachable from any head?

Comece pela documentação de commit_log em https://www.pygit2.org/commit_log.html e pela descrição de Repository.walk(). Esclareça como um Walker é obtido e usado, incluindo se a iteração mantém os commits visitados entre chamadas repetidas a push. Está concluído quando a página explica o comportamento do exemplo sem exigir que os leitores o deduzam.