python compiled test

>>> code="""a=1

... print a"""

>>> code

'a=1\nprint a'

>>> compile(code,'<string>','exec')

<code object <module> at 0xb77065c0, file "<string>", line 1>

>>> exec(_,{"a":3})

1

>>> exec(_,{"a":3},{"a":4})

1

>>> code="print a"

>>> compile(code,'<string>','exec')

<code object <module> at 0xb7706a40, file "<string>", line 1>

>>> exec(_,{"a":3},{"a":4})

4

>>>