- bool() called without arguments now returns False rather than
raising an exception. This is consistent with calling the
constructors for the other builtin types -- called without argument
they all return the false value of that type. (SF patch #724135)
Thanks to Alex Martelli.
diff --git a/Lib/test/test_bool.py b/Lib/test/test_bool.py
index 404b4e8..a0a03ee 100644
--- a/Lib/test/test_bool.py
+++ b/Lib/test/test_bool.py
@@ -137,6 +137,7 @@
veris(bool(0), False)
veris(bool("hello"), True)
veris(bool(""), False)
+veris(bool(), False)
veris(hasattr([], "append"), True)
veris(hasattr([], "wobble"), False)
diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py
index 49f58e0..4adbb40 100644
--- a/Lib/test/test_types.py
+++ b/Lib/test/test_types.py
@@ -86,6 +86,10 @@
if 1 != 1L or 1 != 1.0 or 1L != 1.0: raise TestFailed, 'mixed comparisons'
if -1 != -1L or -1 != -1.0 or -1L != -1.0:
raise TestFailed, 'int/long/float value not equal'
+# calling built-in types without argument must return 0
+if int() != 0: raise TestFailed, 'int() does not return 0'
+if long() != 0L: raise TestFailed, 'long() does not return 0L'
+if float() != 0.0: raise TestFailed, 'float() does not return 0.0'
if int(1.9) == 1 == int(1.1) and int(-1.1) == -1 == int(-1.9): pass
else: raise TestFailed, 'int() does not round properly'
if long(1.9) == 1L == long(1.1) and long(-1.1) == -1L == long(-1.9): pass
@@ -214,6 +218,8 @@
print '6.5.2 Tuples'
+# calling built-in types without argument must return empty
+if tuple() != (): raise TestFailed,'tuple() does not return ()'
if len(()) != 0: raise TestFailed, 'len(())'
if len((1,)) != 1: raise TestFailed, 'len((1,))'
if len((1,2,3,4,5,6)) != 6: raise TestFailed, 'len((1,2,3,4,5,6))'
@@ -251,6 +257,8 @@
vereq(list(tuple(f())), range(1000))
print '6.5.3 Lists'
+# calling built-in types without argument must return empty
+if list() != []: raise TestFailed,'list() does not return []'
if len([]) != 0: raise TestFailed, 'len([])'
if len([1,]) != 1: raise TestFailed, 'len([1,])'
if len([1,2,3,4,5,6]) != 6: raise TestFailed, 'len([1,2,3,4,5,6])'
@@ -441,6 +449,8 @@
print '6.6 Mappings == Dictionaries'
+# calling built-in types without argument must return empty
+if dict() != {}: raise TestFailed,'dict() does not return {}'
d = {}
if d.keys() != []: raise TestFailed, '{}.keys()'
if d.values() != []: raise TestFailed, '{}.values()'