[Reproducible-builds] [dh-python] 93/183: Interpreter: add default_version and binary_dv properties

[Jérémy Bobbio]

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lunar pushed a commit to branch pu/reproducible_builds
in repository dh-python.

commit 7c5b4fbfad45cf5af7a06314d4273bff814f1f57
Author: Piotr Ożarowski <piotr at debian.org>
Date:   Wed Aug 28 23:40:24 2013 +0200

    Interpreter: add default_version and binary_dv properties
---
 dhpython/interpreter.py | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/dhpython/interpreter.py b/dhpython/interpreter.py
index d32bfe5..8e75b62 100644
--- a/dhpython/interpreter.py
+++ b/dhpython/interpreter.py
@@ -145,20 +145,34 @@ class Interpreter:
     def __str__(self):
         return self._vstr(self.version)
 
-    def _vstr(self, version):
+    def _vstr(self, version=None, consider_default_ver=False):
         if self.impl == 'pypy':
             # TODO: will Debian support more than one PyPy version?
             return self.name
         version = version or self.version or ''
+        if consider_default_ver and version == self.default_version:
+            version = '3' if self.impl == 'cpython3' else ''
         if isinstance(version, Version) and version == Version(major=2):
             version = ''  # do not promote /usr/bin/python2
         if self.debug:
             return 'python{}-dbg'.format(version)
         return self.name + str(version)
 
-    def binary(self, version):
+    def binary(self, version=None):
         return '/usr/bin/{}'.format(self._vstr(version))
 
+    @property
+    def binary_dv(self):
+        """Like binary(), but returns path to default intepreter symlink
+        if version matches default one for given implementation.
+        """
+        return '/usr/bin/{}'.format(self._vstr(consider_default_ver=True))
+
+    @property
+    def default_version(self):
+        if self.impl:
+            return default(self.impl)
+
     @staticmethod
     def parse(shebang):
         """Return dict with parsed shebang

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