Class ClassObject
A class whose instances represents Python classes.
Instances of this class represent either builtin classes
such as list or str, or program-defined Python classes
present in the source code.
Generally there is a one-to-one mapping between classes in the Python program and instances of this class in the database. However, that is not always the case. For example, dynamically generated classes may share a single QL class instance. Also the existence of a class definition in the source code does not guarantee that such a class will ever exist in the running program.
Import path
import pythonDirect supertypes
Indirect supertypes
Predicates
| assignedInInit | |
| attributeRefersTo | Whether the named attribute refers to the object and origin |
| attributeRefersTo | Whether the named attribute refers to the object, class and origin |
| booleanValue | Gets the Boolean value of this object if it always evaluates to true or false. For example: false for None, true for 7 and no result for int(x) |
| declaredAttribute | Returns an attribute declared on this class (not on a super-class) |
| declaredMetaClass | |
| declaresAttribute | Returns an attribute declared on this class (not on a super-class) |
| failedInference | Has type inference failed to compute the full class hierarchy for this class |
| failedInference | Has type inference failed to compute the full class hierarchy for this class for the reason given. |
| getABaseType | Gets a base class of this class |
| getACall | Gets a call to this class. Note that the call may not create a new instance of this class, as that depends on the |
| getAMethodCalledFromInit | |
| getASuperType | Gets a super class of this class (includes transitive super classes) |
| getAnImproperSuperType | Gets a super class of this class (includes transitive super classes) or this class |
| getBaseType | Gets the nth base class of this class |
| getImportTimeScope | |
| getMetaClass | Gets the metaclass for this class |
| getMro | |
| getMroItem | Gets the MRO for this class. ClassObject |
| getName | Gets the short (unqualified) name of this class |
| getProbableSingletonInstance | Gets an object which is the sole instance of this class, if this class is probably a singleton. Note the ‘probable’ in the name; there is no guarantee that this class is in fact a singleton. It is guaranteed that getProbableSingletonInstance() returns at most one Object for each ClassObject. |
| getPyClass | Gets the scope associated with this class, if it is not a builtin class |
| getQualifiedName | Gets the qualified name for this class. Should return the same name as the |
| hasABase | Whether this class has a base class |
| hasAttribute | Whether this class has a attribute named |
| hasDuplicateBases | Holds if this class has duplicate base classes |
| isAbstract | Holds if this class is abstract. |
| isCallable | |
| isCollection | Synonymous with isContainer(), retained for backwards compatibility. |
| isContainer | Holds if this class is a container(). That is, does it have a getitem method. |
| isContextManager | |
| isDescriptorType | Holds if this class is a descriptor |
| isIterable | Holds if this class is an iterable. |
| isIterator | Holds if this class is an iterator. |
| isLegalExceptionType | Whether this class is a legal exception class. What constitutes a legal exception class differs between major versions |
| isMapping | Holds if this class is a mapping. |
| isNewStyle | Holds if this class is a new style class. A new style class is one that implicitly or explicitly inherits from |
| isOldStyle | Holds if this class is an old style class. An old style class is one that does not inherit from |
| isOverridingDescriptorType | Holds if this class is an overriding descriptor |
| isSequence | Holds if this class is probably a sequence. |
| isSubclassOf | Holds if this class is an improper subclass of the other class. True if this is a sub-class of other or this is the same class as other. |
| lookupAttribute | Returns an attribute as it would be when looked up at runtime on this class. Will include attributes of super-classes |
| lookupMro | Looks up an attribute by searching this class’ MRO starting at |
| nextInMro | Returns the next class in the MRO of ‘this’ after ‘sup’ |
| notClass | |
| toString | Gets a textual representation of this element. |
| unhashable | Holds if this class is unhashable |
| unknowableAttributes | Whether it is impossible to know all the attributes of this class. Usually because it is impossible to calculate the full class hierarchy or because some attribute is too dynamic. |
Inherited predicates
| asBuiltin | INTERNAL – Do not use | from Object |
| getAnInferredType | Gets an inferred type for this object, without using inter-procedural analysis. WARNING: The lack of context makes this less accurate than f.refersTo(this, result, _) for a control flow node ‘f’ | from Object |
| getOrigin | Gets the point in the source code from which this object “originates”. | from Object |
| hasLocationInfo | Holds if this element is at the specified location. The location spans column | from Object |
| hasLongName | Holds if this object can be referred to by | from Object |
| isBuiltin | Whether this is a builtin object. A builtin object is one defined by the implementation, such as the integer 4 or by a native extension, such as a NumPy array class. | from Object |
| isC | Retained for backwards compatibility. See Object.isBuiltin() | from Object |
| maybe | from Object | |
| overrides | Whether this overrides o. In this context, “overrides” means that this object is a named attribute of a some class C and | from Object |
| simpleClass | Gets the class of this object for simple cases, namely constants, functions, comprehensions and built-in objects. | from Object |