Properly coerce versions with leading zeroes.

A leading zero is forbidden in the SemVer spec, but could be valid under
other schemes; when coercing, it can easily be removed.

Closes #89, thanks to Andrew Ni for the report.

1 files changed, 8 insertions, 0 deletions

diff --git a/semantic_version/base.py b/semantic_version/base.py
index 1b0bac5..7fd871e 100644
--- a/semantic_version/base.py
+++ b/semantic_version/base.py
@@ -244,6 +244,14 @@ class Version(object):
             while version.count('.') < 2:
                 version += '.0'
 
+        # Strip leading zeros in components
+        # Version is of the form nn, nn.pp or nn.pp.qq
+        version = '.'.join(
+            # If the part was '0', we end up with an empty string.
+            part.lstrip('0') or '0'
+            for part in version.split('.')
+        )
+
         if match.end() == len(version_string):
             return Version(version, partial=partial)