diff options
Diffstat (limited to 'Lib/collections.py')
| -rw-r--r-- | Lib/collections.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/collections.py b/Lib/collections.py index fbc00d1fce..0feda0ae94 100644 --- a/Lib/collections.py +++ b/Lib/collections.py @@ -2,6 +2,7 @@ __all__ = ['deque', 'defaultdict', 'named_tuple'] from _collections import deque, defaultdict from operator import itemgetter as _itemgetter +from keyword import iskeyword as _iskeyword import sys as _sys def named_tuple(typename, field_names, verbose=False): @@ -35,6 +36,8 @@ def named_tuple(typename, field_names, verbose=False): for name in (typename,) + field_names: if not name.replace('_', '').isalnum(): raise ValueError('Type names and field names can only contain alphanumeric characters and underscores: %r' % name) + if _iskeyword(name): + raise ValueError('Type names and field names cannot be a keyword: %r' % name) if name[0].isdigit(): raise ValueError('Type names and field names cannot start with a number: %r' % name) seen_names = set() |