Mark Shannon <m...@hotpy.org> added the comment:
Serhiy,
Although the code generator is syntax directed, not all code has an explicit
piece of syntax attached.
For example in the following code:
```
def foo():
if x:
print("yes")
else:
print("no")
```
the compiler emits code to return from the function (LOAD_CONST None;
RETURN_VALUE), but there is no explicit return, and no meaningful line number
for the return.
Also consider, the artificial try-except block generated for async for loops
and the cleanup code for named exception variables.
----------
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue39537>
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