def marker(self, value) -> None:
try:
m = self._marker = get_marker(value)
if not m:
self.marker_no_python, self.requires_python = None, PySpecSet()
else:
self.marker_no_python, self.requires_python = m.split_pyspec()
except InvalidMarker as e:
raise RequirementError("Invalid marker: %s" % str(e)) from None
def parse(
cls, line: str, parsed: Optional[Dict[str, Optional[str]]] = None
) -> "NamedRequirement":
r = cls()
try:
PackageRequirement.__init__(r, line)
r.marker = get_marker(r.marker)
except InvalidMarker as e:
raise RequirementError("Invalid marker: %s" % str(e)) from None
return r
def from_pkg_requirement(cls, req: PackageRequirement) -> "Requirement":
kwargs = {
"name": req.name,
"extras": req.extras,
"specifier": req.specifier,
"marker": get_marker(req.marker),
}
if getattr(req, "url", None):
link = Link(req.url)
klass = VcsRequirement if link.is_vcs else FileRequirement
return klass(url=req.url, **kwargs) # type: ignore
else:
return NamedRequirement(**kwargs)
def create(cls: Type[T], **kwargs: Any) -> T:
if "marker" in kwargs:
try:
kwargs["marker"] = get_marker(kwargs["marker"])
except InvalidMarker as e:
raise RequirementError("Invalid marker: %s" % str(e)) from None
if "extras" in kwargs and isinstance(kwargs["extras"], str):
kwargs["extras"] = tuple(
e.strip() for e in kwargs["extras"][1:-1].split(","))
version = kwargs.pop("version", None)
if version:
kwargs["specifier"] = get_specifier(version)
return cls(**kwargs)
