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Flow

Module Flow

Import path


                                import semmle.python.Flow

Imports

python

Predicates

nested_sequence_assign

Classes

AttrNode	A control flow corresponding to an attribute expression, such as `value.attr`
BasicBlock	A basic block (ignoring exceptional flow edges to scope exit)
BinaryExprNode	A control flow node corresponding to a binary expression, such as `x + y`
BoolExprNode	A control flow node corresponding to a boolean shortcut (and/or) operation
CallNode	A control flow node corresponding to a call expression, such as `func(...)`
CompareNode	A control flow node corresponding to a comparison operation, such as `x<y`
ControlFlowNode	A control flow node. Control flow nodes have a many-to-one relation with syntactic nodes, although most syntactic nodes have only one corresponding control flow node. Edges between control flow nodes include exceptional as well as normal control flow.
DefinitionNode	A control flow node corresponding to a definition, that is a control flow node where a value is assigned to this node. Includes control flow nodes for the targets of assignments, simple or augmented, and nodes implicitly assigned in class and function definitions and imports.
DeletionNode	A control flow node corresponding to a deletion statement, such as `del x`. There can be multiple `DeletionNode`s for each `Delete` such that each target has own `DeletionNode`. The CFG for `del a, x.y` looks like: `NameNode('a') -> DeletionNode -> NameNode('b') -> AttrNode('y') -> DeletionNode`.
DictNode	A control flow node corresponding to a dictionary literal, such as `{ 'a': 1, 'b': 2 }`
ForNode	A flow node for a `for` statement.
IfExprNode	A control flow node corresponding to a conditional expression such as, `body if test else orelse`
ImportExprNode	A control flow node corresponding to an artificial expression representing an import
ImportMemberNode	A control flow node corresponding to a `from ... import ...` expression
ImportStarNode	A control flow node corresponding to a `from ... import *` statement
IterableNode	A control flow node corresponding to an iterable literal. Currently does not include dictionaries, use `DictNode` directly instead.
ListNode	A control flow node corresponding to a list expression, such as `[ 1, 3, 5, 7, 9 ]`
NameConstantNode	A control flow node corresponding to a named constant, one of `None`, `True` or `False`.
NameNode	A control flow node corresponding to a (plain variable) name expression, such as `var`. `None`, `True` and `False` are excluded.
RaiseStmtNode	A flow node for a `raise` statement
SequenceNode	A control flow node corresponding to a sequence (tuple or list) literal
SetNode	A control flow node corresponding to a set expression, such as `{ 1, 3, 5, 7, 9 }`
StarredNode	A control flow node corresponding to a starred expression, `*a`.
SubscriptNode	A control flow node corresponding to a subscript expression, such as `value[slice]`
TupleNode	A control flow node corresponding to a tuple expression such as `( 1, 3, 5, 7, 9 )`
UnaryExprNode	A control flow node corresponding to a unary expression: (`+x`), (`-x`) or (`~x`)