Use a default regex when possible (#205)

src/pypi.py

@@ -5,10 +5,6 @@ from common import dates
 from common import endoflife
 
 METHOD = "pypi"
-DEFAULT_TAG_TEMPLATE = (  # Same as used in Ruby (update.rb)
-    "{{major}}{% if minor %}.{{minor}}{% if patch %}.{{patch}}{%endif%}{%endif%}"
-)
-REGEX = r"^(?:(\d+\.(?:\d+\.)*\d+))$"
 
 
 def fetch_releases(pypi_id, regex):
@@ -38,7 +34,7 @@ def update_product(product_name, configs):
     versions = {}
 
     for config in configs:
-        config = {"regex": REGEX} | config
+        config = {"regex": endoflife.DEFAULT_VERSION_REGEX} | config
         versions = versions | fetch_releases(config[METHOD], config["regex"])
 
     endoflife.write_releases(product_name, versions)