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Diffstat (limited to 'DEVELOPING')
| -rw-r--r-- | DEVELOPING | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/DEVELOPING b/DEVELOPING index 0530d99cf..01eb9bd42 100644 --- a/DEVELOPING +++ b/DEVELOPING @@ -56,16 +56,12 @@ Generally you can do two things here, if you are messing with defaults.. dict.get(foo, some_default) will try to retrieve foo from dict, if there is a KeyError, will insert foo -into dict with the value of some_default. This method is preferred in most cases. - -You can also do something like: +into dict with the value of some_default. This method is preferred in cases where +you are messing with defaults: try: dict[foo] - ...stuff here.. except KeyError: - print "holy cow we totally expected a keyerror here" + dict[foo] = default_value -in most instances however you are only catching the KeyError to set a default, -in which case you should be using dict.get() or telling the user they are missing -a required dict key. +The get call is nicer (compact) and faster (try,except are slow). |