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Diffstat (limited to 'HACKING.rst')
| -rw-r--r-- | HACKING.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/HACKING.rst b/HACKING.rst index 7dda11a..3f6a3ed 100644 --- a/HACKING.rst +++ b/HACKING.rst @@ -27,6 +27,18 @@ General mylist = Foo().list() # OKAY, does not shadow built-in +- Use the "not in" operator for collection membership evaluation. Example:: + + if not X in Y: # BAD, hard to understand + pass + + if X not in Y: # OKAY, intuitive + pass + + if not (X in Y or X is Z): # OKAY, still better than all those 'not's + pass + + TODO vs FIXME ------------- |