$ cat > correct.py <<EOF

  > def toto(arg1, arg2):

  >     del arg2

  >     return (5 + 6, 9)

  > EOF

  $ cat > wrong.py <<EOF

  > def toto( arg1, arg2):

  >     del(arg2)

  >     return ( 5+6, 9)

  > EOF

  $ cat > quote.py <<EOF

  > # let's use quote in comments

  > (''' ( 4x5 )

  > but """\\''' and finally''',

  > """let's fool checkpatch""", '1+2',

  > '"""', 42+1, """and

  > ( 4-1 ) """, "( 1+1 )\" and ")

  > a, '\\\\\\\\', "\\\\\\" x-2", "c-1"

  > EOF

  $ cat > non-py24.py <<EOF

  > # Using builtins that does not exist in Python 2.4

  > if any():

  >     x = all()

  >     y = format(x)

  > 

  > # Do not complain about our own definition

  > def any(x):

  >     pass

  > EOF

  $ check_code="$TESTDIR"/../contrib/check-code.py

  $ "$check_code" ./wrong.py ./correct.py ./quote.py ./non-py24.py

  ./wrong.py:1:

   > def toto( arg1, arg2):

   gratuitous whitespace in () or []

  ./wrong.py:2:

   >     del(arg2)

  ./wrong.py:3:

   >     return ( 5+6, 9)

   missing whitespace in expression

   gratuitous whitespace in () or []

  ./quote.py:5:

   > '"""', 42+1, """and

   missing whitespace in expression

  ./non-py24.py:2:

   > if any():

   any/all/format not available in Python 2.4

  ./non-py24.py:3:

   >     x = all()

   any/all/format not available in Python 2.4

  ./non-py24.py:4:

   >     y = format(x)

   any/all/format not available in Python 2.4

  [1]

  $ cat > is-op.py <<EOF

  > # is-operator comparing number or string literal

  > x = None

  > y = x is 'foo'

  > y = x is "foo"

  > y = x is 5346

  > y = x is -6

  > y = x is not 'foo'

  > y = x is not "foo"

  > y = x is not 5346

  > y = x is not -6

  > EOF

  $ "$check_code" ./is-op.py

  ./is-op.py:3:

   > y = x is 'foo'

   object comparison with literal

  ./is-op.py:4:

   > y = x is "foo"

   object comparison with literal

  ./is-op.py:5:

   > y = x is 5346

   object comparison with literal

  ./is-op.py:6:

   > y = x is -6

   object comparison with literal

  ./is-op.py:7:

   > y = x is not 'foo'

   object comparison with literal

  ./is-op.py:8:

   > y = x is not "foo"

   object comparison with literal

  ./is-op.py:9:

   > y = x is not 5346

   object comparison with literal

  ./is-op.py:10:

   > y = x is not -6

   object comparison with literal

  [1]