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def shooping(num_apple):
	num_apple += 3
	return num_apple
 
def main():
	num_apple = 10
	num_apple = shopping(num_apple)
 
 

Traceback (most recent call last):
  File "/usr/lib/python3.4/py_compile.py", line 124, in compile
    _optimize=optimize)
  File "<frozen importlib._bootstrap>", line 1532, in source_to_code
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
  File "./prog.py", line 3
    def main():
      ^
IndentationError: expected an indented block

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.4/py_compile.py", line 128, in compile
    raise py_exc
py_compile.PyCompileError: Sorry: IndentationError: expected an indented block (prog.py, line 3)

Standard output is empty