From 2a6ced1824cb22dfb967e17388402b22b0474447 Mon Sep 17 00:00:00 2001
From: Erik Stein <erik@classlibrary.net>
Date: Tue, 12 Jun 2018 22:10:37 +0200
Subject: [PATCH] Fix get_version for case if there are no post releases after
 a git tag.

---
 setup.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 1b364a4..a8b16df 100644
--- a/setup.py
+++ b/setup.py
@@ -7,10 +7,19 @@ import re
 import subprocess
 
 
+"""
+Use `git tag 1.0.0` to tag a release; `python setup.py --version`
+to update the  _version.py file.
+"""
+
+
 def get_version(prefix):
     if os.path.exists('.git'):
         parts = subprocess.check_output(['git', 'describe', '--tags']).decode().strip().split('-')
-        version = '{}.{}+{}'.format(*parts)
+        if len(parts) == 3:
+            version = '{}.{}+{}'.format(*parts)
+        else:
+            version = parts[0]
         version_py = "__version__ = '{}'".format(version)
         _version = os.path.join(prefix, '_version.py')
         if not os.path.exists(_version) or open(_version).read().strip() != version_py: