bumpversion prerelease support

Author: softwareengineerprogrammer

.bumpversion.cfg

@@ -3,6 +3,26 @@ current_version = 3.9.27
 commit = True
 tag = True
 
+# Teaches bumpversion how to read and break down a version string that may or may not have a prerelease tag.
+parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<prerelease_label>[a-z]+)\.(?P<prerelease>\d+))?
+
+# Teaches bumpversion how to build the new version string. It will try the first format, and if prerelease parts are
+# missing, it will fall back to the second format.
+serialize =
+  {major}.{minor}.{patch}-{prerelease_label}.{prerelease}
+  {major}.{minor}.{patch}
+
+# Configures the new 'prerelease' number part
+[bumpversion:part:prerelease]
+first_value = 0
+
+[bumpversion:part:prerelease_label]
+optional_value = rc
+values =
+  alpha
+  beta
+  rc
+
 [bumpversion:file:setup.py]
 search = version='{current_version}'
 replace = version='{new_version}'