Drop datrie support (html5lib#455)

Author: gsnedders

CHANGES.rst

@@ -1,6 +1,23 @@
 Change Log
 ----------
 
+1.1
+~~~
+
+UNRELEASED
+
+Breaking changes:
+
+* Drop support for Python 3.3. (#358)
+* Drop support for Python 3.4. (#421)
+
+Other changes:
+
+* Try to import from `collections.abc` to remove DeprecationWarning and ensure
+  `html5lib` keeps working in future Python versions. (#403)
+* Drop optional `datrie` dependency. (#442)
+
+
 1.0.1
 ~~~~~
 

README.rst

@@ -107,9 +107,6 @@ Optional Dependencies
 The following third-party libraries may be used for additional
 functionality:
 
-- ``datrie`` can be used under CPython to improve parsing performance
-  (though in almost all cases the improvement is marginal);
-
 - ``lxml`` is supported as a tree format (for both building and
   walking) under CPython (but *not* PyPy where it is known to cause
   segfaults);

debug-info.py

@@ -12,7 +12,7 @@
     "maxsize": sys.maxsize
 }
 
-search_modules = ["chardet", "datrie", "genshi", "html5lib", "lxml", "six"]
+search_modules = ["chardet", "genshi", "html5lib", "lxml", "six"]
 found_modules = []
 
 for m in search_modules:

html5lib/_trie/__init__.py

@@ -1,14 +1,5 @@
 from __future__ import absolute_import, division, unicode_literals
 
-from .py import Trie as PyTrie
+from .py import Trie
 
-Trie = PyTrie
-
-# pylint:disable=wrong-import-position
-try:
-    from .datrie import Trie as DATrie
-except ImportError:
-    pass
-else:
-    Trie = DATrie
-# pylint:enable=wrong-import-position
+__all__ = ["Trie"]

html5lib/_trie/datrie.py

@@ -11,9 +11,3 @@ chardet>=2.2
 # lxml is supported with its own treebuilder ("lxml") and otherwise
 # uses the standard ElementTree support
 lxml ; platform_python_implementation == 'CPython'
-
-# DATrie can be used in place of our Python trie implementation for
-# slightly better parsing performance.
-# https://github.com/pytries/datrie/issues/52 although closed is not
-# yet released to https://pypi.org/project/datrie
-datrie ; platform_python_implementation == 'CPython' and python_version < '3.7'

requirements-optional.txt

@@ -111,7 +111,6 @@ def default_environment():
       extras_require={
           # A conditional extra will only install these items when the extra is
           # requested and the condition matches.
-          "datrie:platform_python_implementation == 'CPython'": ["datrie"],
           "lxml:platform_python_implementation == 'CPython'": ["lxml"],
 
           # Standard extras, will be installed when the extra is requested.
@@ -123,6 +122,6 @@ def default_environment():
           # extra that will be installed whenever the condition matches and the
           # all extra is requested.
           "all": ["genshi", "chardet>=2.2"],
-          "all:platform_python_implementation == 'CPython'": ["datrie", "lxml"],
+          "all:platform_python_implementation == 'CPython'": ["lxml"],
       },
       )