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gh-118465: Add __firstlineno__ attribute to class (GH-118475)

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It is set by compiler with the line number of the first line of
the class definition.
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Serhiy Storchaka 2024-05-06 12:02:37 +03:00 • committed by GitHub
parent 716ec4bfcf
commit 153b3f7530
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17 changed files with 61 additions and 89 deletions
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8
Lib/test/test_metaclass.py
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@ -164,6 +164,7 @@ Use a __prepare__ method that returns an instrumented dict.
...
d['__module__'] = 'test.test_metaclass'
d['__qualname__'] = 'C'
d['__firstlineno__'] = 1
d['foo'] = 4
d['foo'] = 42
d['bar'] = 123
@ -183,12 +184,12 @@ Use a metaclass that doesn't derive from type.
... b = 24
...
meta: C ()
ns: [('__module__', 'test.test_metaclass'), ('__qualname__', 'C'), ('__static_attributes__', ()), ('a', 42), ('b', 24)]
ns: [('__firstlineno__', 1), ('__module__', 'test.test_metaclass'), ('__qualname__', 'C'), ('__static_attributes__', ()), ('a', 42), ('b', 24)]
kw: []
>>> type(C) is dict
True
>>> print(sorted(C.items()))
[('__module__', 'test.test_metaclass'), ('__qualname__', 'C'), ('__static_attributes__', ()), ('a', 42), ('b', 24)]
[('__firstlineno__', 1), ('__module__', 'test.test_metaclass'), ('__qualname__', 'C'), ('__static_attributes__', ()), ('a', 42), ('b', 24)]
>>>
And again, with a __prepare__ attribute.
@ -206,12 +207,13 @@ And again, with a __prepare__ attribute.
prepare: C () [('other', 'booh')]
d['__module__'] = 'test.test_metaclass'
d['__qualname__'] = 'C'
d['__firstlineno__'] = 1
d['a'] = 1
d['a'] = 2
d['b'] = 3
d['__static_attributes__'] = ()
meta: C ()
ns: [('__module__', 'test.test_metaclass'), ('__qualname__', 'C'), ('__static_attributes__', ()), ('a', 2), ('b', 3)]
ns: [('__firstlineno__', 1), ('__module__', 'test.test_metaclass'), ('__qualname__', 'C'), ('__static_attributes__', ()), ('a', 2), ('b', 3)]
kw: [('other', 'booh')]
>>>