Add __version_info__ module attribute, similar in content and structure to sys.version_info

2 files changed, 21 insertions, 3 deletions

diff --git a/CHANGES b/CHANGES
index 6b835ee..40de70b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -29,16 +29,26 @@ Version 3.0.0b1
   min and max length specification, if applicable, similar to regex length
   specifications:
 
+        Word(alphas)             -> "W:(A-Za-z)"
         Word(nums)               -> "W:(0-9)"
         Word(nums, exact=3)      -> "W:(0-9){3}"
         Word(nums, min=2)        -> "W:(0-9){2,...}"
         Word(nums, max=3)        -> "W:(0-9){1,3}"
         Word(nums, min=2, max=3) -> "W:(0-9){2,3}"
 
+  For expressions of the Char class (similar to Word(..., exact=1), the expression
+  is simply the character range in parentheses:
+
+        Char(nums)               -> "(0-9)"
+        Char(alphas)             -> "(A-Za-z)"
+
 - Removed copy() override in Keyword class which did not preserve definition
   of ident chars from the original expression. PR #233 submitted by jgrey4296,
   thanks!
 
+- In addition to pyparsing.__version__, there is now also a pyparsing.__version_info__,
+  following the same structure and names as in sys.version_info.
+
 
 Version 3.0.0a2 - June, 2020
 ----------------------------
diff --git a/pyparsing/__init__.py b/pyparsing/__init__.py
index c2d0ffb..4e6ec5e 100644
--- a/pyparsing/__init__.py
+++ b/pyparsing/__init__.py
@@ -93,9 +93,17 @@ classes inherit from. Use the docstrings for examples of how to:
  - find more useful common expressions in the :class:`pyparsing_common`
    namespace class
 """
-
-__version__ = "3.0.0b1"
-__versionTime__ = "19 July 2020 22:54 UTC"
+from collections import namedtuple
+
+version_info = namedtuple("version_info", "major minor micro releaseLevel serial")
+__version_info__ = version_info(3, 0, 0, "beta", 1)
+__version__ = (
+    "{}.{}.{}".format(*__version_info__[:3])
+    + ("{}{}".format(__version_info__.releaseLevel[0], __version_info__.serial), "")[
+        __version_info__.releaseLevel == "final"
+    ]
+)
+__versionTime__ = "19 August 2020 19:09 UTC"
 __author__ = "Paul McGuire <ptmcg@users.sourceforge.net>"
 
 from .util import *