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Fix: invalid AnnAssign exception #2176

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iamdefinitelyahuman
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What I did

Correctly handle an invalid AnnAssign during function-scoped type checking.

Fixes #2157

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codecov-commenter commented Sep 30, 2020

Codecov Report

Merging #2176 into master will decrease coverage by 0.86%.
The diff coverage is 100.00%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master    #2176      +/-   ##
==========================================
- Coverage   85.27%   84.41%   -0.87%     
==========================================
  Files          83       83              
  Lines        8400     8403       +3     
  Branches     2031     2032       +1     
==========================================
- Hits         7163     7093      -70     
- Misses        733      807      +74     
+ Partials      504      503       -1     
Impacted Files Coverage Δ
vyper/context/validation/local.py 88.38% <100.00%> (+0.14%) ⬆️
vyper/context/types/value/numeric.py 78.04% <0.00%> (-6.10%) ⬇️
vyper/functions/functions.py 84.37% <0.00%> (-5.35%) ⬇️
vyper/parser/expr.py 72.13% <0.00%> (-4.92%) ⬇️
vyper/ast/nodes.py 92.30% <0.00%> (-1.54%) ⬇️
vyper/context/validation/module.py 87.42% <0.00%> (+1.19%) ⬆️
vyper/ast/folding.py 93.61% <0.00%> (+2.12%) ⬆️

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@@ -170,6 +170,10 @@ def __init__(
)

def visit_AnnAssign(self, node):
name = node.get("target.id")
if name is None:
raise VariableDeclarationException("Invalid assignment", node)
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Add a test for this?

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Bad exception message when using attribute in AnnAssign
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