Current File : //opt/alt/python37/lib/python3.7/site-packages/virtualenv/discovery/windows/__init__.py
from __future__ import absolute_import, unicode_literals
from ..py_info import PythonInfo
from ..py_spec import PythonSpec
from .pep514 import discover_pythons
class Pep514PythonInfo(PythonInfo):
""" """
def propose_interpreters(spec, cache_dir, env):
# see if PEP-514 entries are good
# start with higher python versions in an effort to use the latest version available
# and prefer PythonCore over conda pythons (as virtualenv is mostly used by non conda tools)
existing = list(discover_pythons())
existing.sort(
key=lambda i: tuple(-1 if j is None else j for j in i[1:4]) + (1 if i[0] == "PythonCore" else 0,), reverse=True
)
for name, major, minor, arch, exe, _ in existing:
# pre-filter
if name in ("PythonCore", "ContinuumAnalytics"):
name = "CPython"
registry_spec = PythonSpec(None, name, major, minor, None, arch, exe)
if registry_spec.satisfies(spec):
interpreter = Pep514PythonInfo.from_exe(exe, cache_dir, env=env, raise_on_error=False)
if interpreter is not None:
if interpreter.satisfies(spec, impl_must_match=True):
yield interpreter
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