markers.py File Reference

Go to the source code of this file.

Data Structures
class	InvalidMarker
class	UndefinedComparison
class	UndefinedEnvironmentName
class	Node
class	Variable
class	Value
class	Op
class	Undefined
class	Marker

Namespaces
namespace	pip
namespace	pip._vendor
namespace	pip._vendor.packaging
namespace	pip._vendor.packaging.markers

Functions
List[Any]	_coerce_parse_result (Union[ParseResults, List[Any]] results)
str	_format_marker (Union[List[str], Tuple[Node,...], str] marker, Optional[bool] first=True)
bool	_eval_op (str lhs, Op op, str rhs)
str	_get_env (Dict[str, str] environment, str name)
bool	_evaluate_markers (List[Any] markers, Dict[str, str] environment)
str	format_full_version ("sys._version_info" info)
Dict[str, str]	default_environment ()

Variables
	Operator = Callable[[str, str], bool]
tuple	VARIABLE
dict	ALIASES
tuple	VERSION_CMP
tuple	MARKER_OP = VERSION_CMP | L("not in") | L("in")
	MARKER_VALUE = QuotedString("'") | QuotedString('"')
	BOOLOP = L("and") | L("or")
tuple	MARKER_VAR = VARIABLE | MARKER_VALUE
	MARKER_ITEM = Group(MARKER_VAR + MARKER_OP + MARKER_VAR)
	LPAREN = L("(").suppress()
	RPAREN = L(")").suppress()
	MARKER_EXPR = Forward()
	MARKER_ATOM = MARKER_ITEM | Group(LPAREN + MARKER_EXPR + RPAREN)
	MARKER = stringStart + MARKER_EXPR + stringEnd
dict	_operators
	_undefined = Undefined()