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Inconsistent tracebacks. Note that the traceback for bug.py does not 
reference the
module file and line number.
# bug.py
def f():
  f'''
  {d e}'''
a=b
import bug
Traceback (most recent call last):
  File "<fstring>", line 1
   (d e)
    ^
SyntaxError: invalid syntax
----------------------------------------
# bug2.py
def f():
  f'''
  {de}'''
a=b
import bug2
bug2.f()
Traceback (most recent call last):
  File "C:\python\bug2.py", line 5, in <module>
   a=b
NameError: name 'b' is not defined