diff options
| -rw-r--r-- | bindings/python/notmuch/thread.py | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/bindings/python/notmuch/thread.py b/bindings/python/notmuch/thread.py index eebd6cb..2bb30b7 100644 --- a/bindings/python/notmuch/thread.py +++ b/bindings/python/notmuch/thread.py @@ -141,7 +141,19 @@ class Threads(object): self._threads = None return i - + def __nonzero__(self): + """Check if :class:`Threads` contains at least one more valid thread + + The existence of this function makes 'if Threads: foo' work, as + that will implicitely call len() exhausting the iterator if + __nonzero__ does not exist. This function makes `bool(Threads())` + work repeatedly. + + :return: True if there is at least one more thread in the + Iterator, False if not. None on a "Out-of-memory" error. + """ + return self._threads is not None and \ + nmlib.notmuch_threads_valid(self._threads) > 0 def __del__(self): """Close and free the notmuch Threads""" |