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Use tb[-1] instead of tb[len(tb) - 1] to get the last element
performance
Hardcoded temporary directory
security
hasattr is used to check if the object is callable
bug risk
Special method __add__ should return NotImplemented
anti-pattern
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4x more issues than any other Python analyzer in the market
Automatically format your code with Transformers 
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proceedings.py
CHANGED
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@@ -18,13 +18,9 @@ def tar_something():
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18
18
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if (
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order.status == STATUS_OK
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20
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-
and (
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21
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-
isinstance(order.type, Wallet)
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22
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-
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20
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+
and isinstance(order.type, (Wallet, Credit, COD))
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or isinstance(order.type, COD)
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)
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and product.stock > 0
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-
and
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22
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+
and isinstance(product.price, (float, int))
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27
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):
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24
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make_transaction(order, product, merchant)
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29
25
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alert_merchant(order, product)
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