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  1. a
  2. b
  3. c = a + b
  4.  
  5. print d
Runtime error #stdin #stdout #stderr 0.01s 9008KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Traceback (most recent call last):
  File "prog.py", line 1, in <module>
NameError: name 'a' is not defined
https://ideone.com/YSuzQZ
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
secret

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