psycopg2/lib/compat.py

import sys

__all__ = ['string_types', 'text_type', 'lru_cache']

if sys.version_info[0] == 2:
    # Python 2
    string_types = basestring,
    text_type = unicode
    from ._lru_cache import lru_cache

else:
    # Python 3
    string_types = str,
    text_type = str
    from functools import lru_cache
Drop 2to3 build step; make all code compatible with all Pythons Make all library code compatible with both Python 2 and Python 3. Helps move to modern Python idioms. Can now write for Python 3 (with workarounds for Python 2) instead of the other way around. In the future, when it is eventually time to drop Python 2, the library will be in a better position to remove workarounds Added a very small comparability module compat.py where required. It includes definitions for: - text_type -- A type. str on Python 3. unicode on Python 2. - string_types -- A tuple. Contains only str on Python 3. Contains str & unicode on Python 2. 2017-12-11 05:35:41 +03:00			`import sys`

Use a proper LRU cache for namedtuples Previous one didn't refresh by last use. Use the stdlib version for py3 and one of our own for py2. Max size set to 512, which should be fine for everyone (tweaking is still possible by monkeypatching, as the tests do, but I don't want to make an interface of it). 2019-02-02 22:21:39 +03:00			`__all__ = ['string_types', 'text_type', 'lru_cache']`

Drop 2to3 build step; make all code compatible with all Pythons Make all library code compatible with both Python 2 and Python 3. Helps move to modern Python idioms. Can now write for Python 3 (with workarounds for Python 2) instead of the other way around. In the future, when it is eventually time to drop Python 2, the library will be in a better position to remove workarounds Added a very small comparability module compat.py where required. It includes definitions for: - text_type -- A type. str on Python 3. unicode on Python 2. - string_types -- A tuple. Contains only str on Python 3. Contains str & unicode on Python 2. 2017-12-11 05:35:41 +03:00			`if sys.version_info[0] == 2:`
			`# Python 2`
			`string_types = basestring,`
			`text_type = unicode`
Use a proper LRU cache for namedtuples Previous one didn't refresh by last use. Use the stdlib version for py3 and one of our own for py2. Max size set to 512, which should be fine for everyone (tweaking is still possible by monkeypatching, as the tests do, but I don't want to make an interface of it). 2019-02-02 22:21:39 +03:00			`from ._lru_cache import lru_cache`

Drop 2to3 build step; make all code compatible with all Pythons Make all library code compatible with both Python 2 and Python 3. Helps move to modern Python idioms. Can now write for Python 3 (with workarounds for Python 2) instead of the other way around. In the future, when it is eventually time to drop Python 2, the library will be in a better position to remove workarounds Added a very small comparability module compat.py where required. It includes definitions for: - text_type -- A type. str on Python 3. unicode on Python 2. - string_types -- A tuple. Contains only str on Python 3. Contains str & unicode on Python 2. 2017-12-11 05:35:41 +03:00			`else:`
			`# Python 3`
			`string_types = str,`
			`text_type = str`
Use a proper LRU cache for namedtuples Previous one didn't refresh by last use. Use the stdlib version for py3 and one of our own for py2. Max size set to 512, which should be fine for everyone (tweaking is still possible by monkeypatching, as the tests do, but I don't want to make an interface of it). 2019-02-02 22:21:39 +03:00			`from functools import lru_cache`