python/python3-cython-opt: Added (Superset of Python).

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/python/python3-cython-opt/README b/python/python3-cython-opt/README
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+The Cython language makes writing C extensions for the Python language
+as easy as Python itself.
+Cython is a source code translator based on Pyrex, but supports more
+cutting edge functionality and optimizations.
+
+The Cython language is a superset of the Python language (almost all
+Python code is also valid Cython code), but Cython additionally supports
+optional static typing to natively call C functions, operate with C++
+classes and declare fast C types on variables and class attributes.
+This allows the compiler to generate very efficient C code from Cython
+code.
+
+This makes Cython the ideal language for writing glue code for external
+C/C++ libraries, and for fast C modules that speed up the execution of
+Python code.
+
+You have to add those lines in your SlackBuild to make use of this
+newer cython:
+PYVER=$(python3 -c 'import sys; print("%d.%d" % sys.version_info[:2])')
+export PYTHONPATH="/opt/python$PYVER/site-packages:/opt/cython/python$PYVER/site-packages"
+export PATH="/opt/cython/bin:$PATH"