# Buggy code
def _evaluate_ast(node):
    wrapper = None
    statement = ""

    if isinstance(node.parent, ast.BinOp):
        out = utils.concat_string(node, node.parent)
        wrapper = out[0].parent
        statement = out[1]
    elif isinstance(node.parent, ast.Attribute) and node.parent.attr == "format":
        statement = node.s
        # Hierarchy for "".format() is Wrapper -> Call -> Attribute -> Str
        wrapper = node.parent.parent.parent
    elif hasattr(ast, "JoinedStr") and isinstance(node.parent, ast.JoinedStr):
        statement = node.s
        wrapper = node.parent.parent

    if isinstance(wrapper, ast.Call):  # wrapped in "execute" call?
        names = ["execute", "executemany"]
        name = utils.get_called_name(wrapper)
        return (name in names, statement)
    else:
        return (False, statement)


# Traceback (AttributeError)
from bandit.core.config import BanditConfig
from bandit.core.meta_ast import BanditMetaAst
from bandit.core.metrics import Metrics
from bandit.core.node_visitor import BanditNodeVisitor
from bandit.core.test_set import BanditTestSet
from pyflakes.checker import Checker
import ast
profile = {}
bnv = BanditNodeVisitor(
...     'filename',
...     BanditMetaAst(),
...     BanditTestSet(BanditConfig(), profile=profile),
...     False,
...     [],
...     Metrics(),
... )
tree = ast.parse("""def test():
...     try:
...         x = 5
...         if True:
...             x = 10  # noqa: F841
...     except AttributeError:
...         pass
... """)
bnv.generic_visit(tree)
Checker(tree=tree)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 673, in __init__
self.runDeferred(self._deferredFunctions)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 710, in runDeferred
handler()
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1474, in runFunction
self.handleChildren(node, omit='decorator_list')
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1073, in handleChildren
self.handleNode(node, tree)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1120, in handleNode
handler(node)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1623, in TRY
self.handleNode(child, node)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1120, in handleNode
handler(node)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1073, in handleChildren
self.handleNode(node, tree)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1120, in handleNode
handler(node)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1073, in handleChildren
self.handleNode(node, tree)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1120, in handleNode
handler(node)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1353, in NAME
self.handleNodeStore(node)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 1017, in handleNodeStore
self.addBinding(node, binding)
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 876, in addBinding
not self.differentForks(node, existing.source)):
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 857, in differentForks
if self.descendantOf(lnode, items, ancestor) ^ \
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 835, in descendantOf
if self.getCommonAncestor(node, a, stop):
File "/tmp/t/venv/lib/python3.5/site-packages/pyflakes/checker.py", line 827, in getCommonAncestor
if (lnode.depth > rnode.depth):
AttributeError: 'ExceptHandler' object has no attribute 'depth'

# Fixed code
def _evaluate_ast(node):
    wrapper = None
    statement = ""

    if isinstance(node._bandit_parent, ast.BinOp):
        out = utils.concat_string(node, node._bandit_parent)
        wrapper = out[0]._bandit_parent
        statement = out[1]
    elif (
        isinstance(node._bandit_parent, ast.Attribute)
        and node._bandit_parent.attr == "format"
    ):
        statement = node.s
        # Hierarchy for "".format() is Wrapper -> Call -> Attribute -> Str
        wrapper = node._bandit_parent._bandit_parent._bandit_parent
    elif hasattr(ast, "JoinedStr") and isinstance(node._bandit_parent, ast.JoinedStr):
        statement = node.s
        wrapper = node._bandit_parent._bandit_parent

    if isinstance(wrapper, ast.Call):  # wrapped in "execute" call?
        names = ["execute", "executemany"]
        name = utils.get_called_name(wrapper)
        return (name in names, statement)
    else:
        return (False, statement)