From 813718517433ff0fb516f52d7d2665a71cb984e1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Hrn=C4=8Diar?= <thrnciar@redhat.com>
Date: Mon, 25 Oct 2021 11:37:46 +0200
Subject: [PATCH] Split Specifier regex into operator and version parts

Tokenizer uses _version_regex_str to detect 'VERSION' token.
---
 packaging/_parser.py    | 2 +-
 packaging/specifiers.py | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/packaging/_parser.py b/packaging/_parser.py
index 8f614711b..8a41fe32f 100644
--- a/packaging/_parser.py
+++ b/packaging/_parser.py
@@ -20,7 +20,7 @@ def __init__(self, value: str) -> None:
         self.value = value
 
     def __str__(self) -> str:
-        return str(self.value)
+        return self.value
 
     def __repr__(self) -> str:
         return f"<{self.__class__.__name__}('{self}')>"
diff --git a/packaging/specifiers.py b/packaging/specifiers.py
index dab49eef9..2aa6dd488 100644
--- a/packaging/specifiers.py
+++ b/packaging/specifiers.py
@@ -80,8 +80,10 @@ def filter(
 
 class Specifier(BaseSpecifier):
 
-    _regex_str = r"""
+    _operator_regex_str = r"""
         (?P<operator>(~=|==|!=|<=|>=|<|>|===))
+        """
+    _version_regex_str = r"""
         (?P<version>
             (?:
                 # The identity operators allow for an escape hatch that will
@@ -173,7 +175,10 @@ class Specifier(BaseSpecifier):
         )
         """
 
-    _regex = re.compile(r"^\s*" + _regex_str + r"\s*$", re.VERBOSE | re.IGNORECASE)
+    _regex = re.compile(
+        r"^\s*" + _operator_regex_str + _version_regex_str + r"\s*$",
+        re.VERBOSE | re.IGNORECASE,
+    )
 
     _operators = {
         "~=": "compatible",