Removed

=======

* The abstract base classes in :mod:`collections.abc` no longer are

exposed in the regular :mod:`collections` module. This will help

create a clearer distinction between the concrete classes and the abstract

base classes.

* The undocumented ``sys.callstats()`` function has been removed. Since Python

3.7, it was deprecated and always returned :const:`None`. It required a special

build option ``CALL_PROFILE`` which was already removed in Python 3.7.

pass

def __getattr__(name):

# For backwards compatibility, continue to make the collections ABCs

# through Python 3.6 available through the collections module.

# Note, no new collections ABCs were added in Python 3.7

if name in _collections_abc.__all__:

obj = getattr(_collections_abc, name)

import warnings

warnings.warn("Using or importing the ABCs from 'collections' instead "

"of from 'collections.abc' is deprecated since Python 3.3, "

"and in 3.9 it will stop working",

DeprecationWarning, stacklevel=2)

globals()[name] = obj

return obj

raise AttributeError(f'module {__name__!r} has no attribute {name!r}')

################################################################################

### OrderedDict

################################################################################

The abstract base classes in :mod:`collections.abc` no longer are exposed in

the regular :mod:`collections` module.