class UnionType(ProperType): (source)
| Class Method | deserialize | 
    Undocumented | 
| Static Method | make_union | 
    Undocumented | 
| Method | __eq__ | 
    Undocumented | 
| Method | __hash__ | 
    Undocumented | 
| Method | __init__ | 
    Undocumented | 
| Method | accept | 
    Undocumented | 
| Method | has_readable_member | 
    For a tree of unions of instances, check whether all instances have a given member. | 
| Method | length | 
    Undocumented | 
| Method | relevant_items | 
    Removes NoneTypes from Unions when strict Optional checking is off. | 
| Method | serialize | 
    Undocumented | 
| Class Variable | __slots__ | 
    Undocumented | 
| Instance Variable | can_be_false | 
    Undocumented | 
| Instance Variable | can_be_true | 
    Undocumented | 
| Instance Variable | is_evaluated | 
    Undocumented | 
| Instance Variable | items | 
    Undocumented | 
| Instance Variable | uses_pep604_syntax | 
    Undocumented | 
            Inherited from Type (via ProperType):
          
| Method | __repr__ | 
    Undocumented | 
| Method | can_be_false_default | 
    Undocumented | 
| Method | can_be_true_default | 
    Undocumented | 
            Inherited from Context (via ProperType, Type):
          
| Method | get_column | 
    Don't use. Use x.column. | 
| Method | get_line | 
    Don't use. Use x.line. | 
| Method | set_line | 
    If target is a node, pull line (and column) information into this node. If column is specified, this will override any column information coming from a node. | 
| Instance Variable | column | 
    Undocumented | 
| Instance Variable | end_line | 
    Undocumented | 
| Instance Variable | line | 
    Undocumented | 
mypy.types.Type.__init__Undocumented
| Parameters | |
items:Sequence[ | Undocumented | 
line:int | Undocumented | 
column:int | Undocumented | 
is_evaluated:bool | Undocumented | 
uses_pep604_syntax:bool | Undocumented | 
mypy.types.Type.acceptUndocumented
| Parameters | |
visitor:TypeVisitor[ | Undocumented | 
| Returns | |
T | Undocumented | 
For a tree of unions of instances, check whether all instances have a given member.
TODO: Deal with attributes of TupleType etc. TODO: This should probably be refactored to go elsewhere.
| Parameters | |
name:str | Undocumented | 
| Returns | |
bool | Undocumented |