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| author | Gaëtan de Menten <gdementen@gmail.com> | 2009-11-04 13:19:47 +0000 |
|---|---|---|
| committer | Gaëtan de Menten <gdementen@gmail.com> | 2009-11-04 13:19:47 +0000 |
| commit | d79d48ca55a3576723cd3bdde05b426de07c1e69 (patch) | |
| tree | 0115f7df6344c77721736c04fda140738727940b /lib/sqlalchemy | |
| parent | 6acbb4fb93eb556de88847f8acc38c9bbf86fb2f (diff) | |
| download | sqlalchemy-d79d48ca55a3576723cd3bdde05b426de07c1e69.tar.gz | |
Using generators for small lists is highly inefficient. This change shoves
6% of total time for large ORM queries. Not bad for a 2 characters change :)
Diffstat (limited to 'lib/sqlalchemy')
| -rw-r--r-- | lib/sqlalchemy/orm/mapper.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py index 6bc55c831..146c4d673 100644 --- a/lib/sqlalchemy/orm/mapper.py +++ b/lib/sqlalchemy/orm/mapper.py @@ -1583,7 +1583,7 @@ class Mapper(object): identity_class = self._identity_class def identity_key(row): - return (identity_class, tuple(row[column] for column in pk_cols)) + return (identity_class, tuple([row[column] for column in pk_cols])) new_populators = [] existing_populators = [] |