KeyError: 'lambdaname' on chalice deploy when using a Python lambda

[canozmen]

Adding the following code to app.py causes chalice deploy to fail with KeyError: 'x' where x is the name of the Python lambda. I tested the same function on a separate python file and it seems to work fine.

def fishes_by_month(month): return sorted(fishes.values(), key=lambda x: x.taste_by_month[month - 1], reverse=True)

Here is the output from chalice deploy:

Updating IAM policy.
Traceback (most recent call last):
File "/home/canozmen/.virtualenvs/chalice-demo/bin/chalice", line 11, in
sys.exit(main())
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/cli/init.py", line 203, in main
return cli(obj={})
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/click/core.py", line 716, in call
return self.main(_args, *_kwargs)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/click/core.py", line 696, in main
rv = self.invoke(ctx)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/click/core.py", line 1060, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/click/core.py", line 889, in invoke
return ctx.invoke(self.callback, *_ctx.params)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/click/core.py", line 534, in invoke
return callback(_args, *_kwargs)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/click/decorators.py", line 17, in new_func
return f(get_current_context(), *args, *_kwargs)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/cli/init.py", line 123, in deploy
d.deploy(ctx.obj)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/deployer.py", line 203, in deploy
self._deploy_lambda(config)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/deployer.py", line 215, in _deploy_lambda
self._get_or_create_lambda_role_arn(config)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/deployer.py", line 304, in _get_or_create_lambda_role_arn
self._update_role_with_latest_policy(app_name, config)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/deployer.py", line 313, in _update_role_with_latest_policy
app_policy = self._get_policy_from_source_code(config)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/deployer.py", line 342, in _get_policy_from_source_code
app_policy = policy.policy_from_source_code(f.read())
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/policy.py", line 20, in policy_from_source_code
client_calls = get_client_calls_for_app(source_code)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 67, in get_client_calls_for_app
t.bind_types(parsed)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 283, in bind_types
self.visit(parsed_code.parsed_ast)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/usr/lib/python2.7/ast.py", line 249, in generic_visit
self.visit(item)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/usr/lib/python2.7/ast.py", line 251, in generic_visit
self.visit(value)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 369, in visit_Call
self._infer_function_call(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 387, in _infer_function_call
child_infer.bind_types(ParsedCode(ast_node, sub_table))
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 283, in bind_types
self.visit(parsed_code.parsed_ast)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 409, in visit_FunctionDef
self.visit(child)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/usr/lib/python2.7/ast.py", line 249, in generic_visit
self.visit(item)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/usr/lib/python2.7/ast.py", line 249, in generic_visit
self.visit(item)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 314, in visit_Assign
self.generic_visit(node)
File "/usr/lib/python2.7/ast.py", line 251, in generic_visit
self.visit(value)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 369, in visit_Call
self._infer_function_call(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 387, in _infer_function_call
child_infer.bind_types(ParsedCode(ast_node, sub_table))
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 283, in bind_types
self.visit(parsed_code.parsed_ast)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 409, in visit_FunctionDef
self.visit(child)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 419, in visit_Return
self.generic_visit(node)
File "/usr/lib/python2.7/ast.py", line 251, in generic_visit
self.visit(value)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 341, in visit_Call
self.generic_visit(node)
File "/usr/lib/python2.7/ast.py", line 249, in generic_visit
self.visit(item)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/usr/lib/python2.7/ast.py", line 251, in generic_visit
self.visit(value)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/usr/lib/python2.7/ast.py", line 251, in generic_visit
self.visit(value)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/usr/lib/python2.7/ast.py", line 249, in generic_visit
self.visit(item)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 429, in visit
return ast.NodeVisitor.visit(self, node)
File "/usr/lib/python2.7/ast.py", line 241, in visit
return visitor(node)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 307, in visit_Name
node.inferred_type = self._symbol_table.get_inferred_type(node.id)
File "/home/canozmen/.virtualenvs/chalice-demo/local/lib/python2.7/site-packages/chalice/analyzer.py", line 214, in get_inferred_type
symbol = self._local_table.lookup(name)
File "/usr/lib/python2.7/symtable.py", line 100, in lookup
flags = self._table.symbols[name]
KeyError: 'x'

[canozmen]

I can confirm that chalice deploy --no-autogen-policy works fine. Looks like the analyzer picks up the 'lambda x' as a boto function call to the Amazon lambda service.

[jamesls]

Thanks for reporting.