Added __version__ attribute. Fixes #20

Author: Sylvain MARIE

.travis.yml

@@ -70,6 +70,8 @@ after_success:
     else
       echo "File 'ci_tools/github_travis_rsa' has not been created, please check your encrypted repo token in .travis.yml, on the line starting with 'openssl aes-256-cbc...'"
     fi
+  # -- create the _version.py file: actually not needed, done in setup now
+  # - python ci_tools/write_version.py ./mini_lambda
 
 deploy:
   # Deploy on PyPI on tags

ci_tools/write_version.py

@@ -0,0 +1,20 @@
+#  Authors: Sylvain Marie <sylvain.marie@se.com>
+#
+#  License: BSD 3 clause
+
+from os.path import abspath
+
+import click
+from setuptools_scm import get_version
+
+
+@click.command()
+@click.argument('dest_folder')
+def write_version(dest_folder):
+    file_name = '%s/_version.py' % dest_folder
+    print("Writing version to file: %s" % abspath(file_name))
+    get_version('.', write_to=file_name)
+
+
+if __name__ == '__main__':
+    write_version()

mini_lambda/__init__.py

@@ -6,7 +6,18 @@
 from mini_lambda.main import _, L, F, C, Not, And, Or, Format, Get, In, Slice, InputVar, Constant, \
     make_lambda_friendly, make_lambda_friendly_method, make_lambda_friendly_class, as_function, is_mini_lambda_expr
 
+try:
+    # Distribution mode : import from _version.py generated by setuptools_scm during release
+    from ._version import version as __version__
+except ImportError:
+    # Source mode : use setuptools_scm to get the current version from src using git
+    from setuptools_scm import get_version as _gv
+    from os import path as _path
+    __version__ = _gv(_path.join(_path.dirname(__file__), _path.pardir))
+
+
 __all__ = [
+    '__version__',
     # submodules
     'base', 'generated_magic_replacements', 'main', 'symbols', 'vars',  # generated_magic
     # symbols

setup.py

@@ -130,7 +130,7 @@
     dependency_links=DEPENDENCY_LINKS,
 
     # we're using git
-    use_scm_version=True, # this provides the version + adds the date if local non-commited changes.
+    use_scm_version={'write_to': '%s/_version.py' % DISTNAME}, # this provides the version + adds the date if local non-commited changes.
     # use_scm_version={'local_scheme':'dirty-tag'}, # this provides the version + adds '+dirty' if local non-commited changes.
     setup_requires=SETUP_REQUIRES,