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Kovid Goyal 2018-06-26 06:44:40 +05:30
parent 6ca643ba22
commit 6b01ddeaa3
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1 changed files with 1 additions and 1 deletions
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src/calibre/db/tables.py
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@ -42,6 +42,7 @@ def c_parse(val):
except (ValueError, TypeError):
return UNDEFINED_DATE
ONE_ONE, MANY_ONE, MANY_MANY = xrange(3)
null = object()
@ -700,4 +701,3 @@ class IdentifiersTable(ManyToManyTable):
def all_identifier_types(self):
return frozenset(k for k, v in self.col_book_map.iteritems() if v)