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Change comparisons to literals from
is
to==
.Comparisons to literals with
is
aren't Pythonic becauseis
uses the underlying object ID to determine whether objects match, whereas==
does a value comparison. By switching the comparisons to==
, we have a more consistent set of comparisons, because we don't rely on object IDs but rather the values themselves, which is what we're looking for, anyhow.This partially fixes #298 , clearing some of the
SyntaxWarning
s raised.