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Documentation: How to specify iterable with content type?
How to specify that an item should be iterable, with the contents being a specific type? In the case I'm looking at, all the following should pass:
listofstrstupleofstrsodict_valuesofstrs
etc.
Noneable key in dict
Expected the following to be valid:
template = {
'person': [{
'id': int,
obiwan.noneable('name'): str
}]
}
test = {'person': [{'id': 1, 'name': None}]}
obiwan.duckable(test, template)
But seems like it isn't.
None should match NoneType
The documentation says
noneable is just a way of saying
{...,None}
I would prefer to use the {...,None} syntax, as it's more concise and more convenient. However, obiwan doesn't seem to actually let None match None, objecting that None is not the same as NoneType. (And NoneType is hard to use as a literal.)
abstract base class bug?
I have a minimal working example of this bug in python 3.4
import abc
from obiwan import *; install_obiwan_runtime_check()
class Foo(metaclass=abc.ABCMeta):
@abc.abstractmethod
def bar(self):
pass
class FooImpl(Foo):
def bar(self):
print('hi')
def do_stuff_with_a_foo_implementation(f: [Foo]):
f.bar()
do_stuff_with_a_foo_implementation([FooImpl()])I'm not sure what it is about the list that causes the trouble but it is required. It works fine without the list
Console dump:
Traceback (most recent call last):
File "C:\Python34\lib\site-packages\obiwan\__init__.py", line 281, in duckable
if not isinstance(obj, collections.abc.Sequence):
AttributeError: 'module' object has no attribute 'abc'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "obiwan_abc_test.py", line 17, in <module>
do_stuff_with_a_foo_implementation([FooImpl()])
File "obiwan_abc_test.py", line 14, in do_stuff_with_a_foo_implementation
def do_stuff_with_a_foo_implementation(f: [Foo]):
File "C:\Python34\lib\site-packages\obiwan\__init__.py", line 401, in _runtime
_checker
duckable(arg, constraint, "%s(%s)" % (frame.f_code.co_name, key))
File "C:\Python34\lib\site-packages\obiwan\__init__.py", line 318, in duckable
raise ObiwanError("%s internal error: %s" % (ctx, e))
obiwan.ObiwanError: do_stuff_with_a_foo_implementation(f) internal error: 'modul
e' object has no attribute 'abc'
float vs int check doesn't seem to work
Like here:
def id2(x: int) -> int:
"""Identitée
>>> id2(2)
2
>>> id2(2.0)
Traceback (most recent call last):
...
obiwan.ObiwanError: id(x) is <class 'float'> but should be <class 'int'>
"""
return x
See here:
https://gist.github.com/Grahack/9333665
Add appropriate classifiers
setup.py is missing classifiers like
classifiers=(
'Development Status :: 5 - Production/Stable',
'Intended Audience :: Developers',
'Natural Language :: English',
'License :: OSI Approved :: Apache Software License',
'Programming Language :: Python',
'Programming Language :: Python :: 2.6',
'Programming Language :: Python :: 2.7',
'Programming Language :: Python :: 3',
'Programming Language :: Python :: 3.3',
),
This will help us know to try this library we need python 2 or python 3
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