Fix compatibility issue with Jinja2 2.11.x

gh-60

CHANGES.md

@@ -17,7 +17,7 @@ Minor release (last with Python 2.7 support), 23 Aug 2020
 - Fixed an exit code in case of undefined variable from 0 to 1.
 - Fixed a bug that caused extension classes not to load.
 - Quoted string variable with commas is not converted to list anymore (gh-57).
-- Implemented workaround for Jinja 2.11 compatibility issue (gh-60)
+- Implemented workaround for Jinja 2.11 compatibility issue (gh-60).
 - Added support for INI and CSV file parsing.
 - Fixed a bug that caused Yasha to crash when loading file extensions
   (regression likely caused by Click).

setup.py

@@ -18,9 +18,10 @@
     license="MIT",
     packages=find_packages(),
     include_package_data=True,
+    python_requires=">=3.5",
     install_requires=[
         "Click",
-        "Jinja2<2.11",
+        "Jinja2>=2.11",
         "pytoml",
         "pyyaml",
         "xmltodict",
@@ -31,9 +32,6 @@
         yasha=yasha.cli:cli
     ''',
     classifiers=[
-        "Programming Language :: Python :: 2.7",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
         "Topic :: Software Development :: Code Generators",
         "Development Status :: 5 - Production/Stable",
         "License :: OSI Approved :: MIT License",

yasha/cli.py

@@ -102,7 +102,7 @@ def load_extensions(file):
 
     import jinja2.defaults
     for name, obj in inspect.getmembers(module):
-        if name in jinja2.defaults.__all__:
+        if name in tuple(x for x in dir(jinja2.defaults) if x.isupper()):
             setattr(jinja2.defaults, name, obj)
 
     try: