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Check for duplicated attributes

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Fails to work if attributes are duplicated, raising an appropriate
exception.
This commit is contained in:
Salvo 'LtWorf' Tomaselli 2015-02-23 14:17:50 +01:00
parent 512aafd946
commit 0a562ff603
1 changed files with 3 additions and 0 deletions
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3
relational/relation.py
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@ -527,6 +527,9 @@ class header (object):
if not is_valid_relation_name(i): if not is_valid_relation_name(i):
raise Exception('"%s" is not a valid attribute name' % i) raise Exception('"%s" is not a valid attribute name' % i)
if len(attributes) != len(set(attributes)):
raise Exception('Attribute names must be unique')
def __repr__(self): def __repr__(self):
return "header(%s)" % (self.attributes.__repr__()) return "header(%s)" % (self.attributes.__repr__())