diff mbox series

[v4,02/10] iotests/297: Rewrite in Python and extend reach

Message ID 20210115174315.30949-3-mreitz@redhat.com
State New
Headers show
Series iotests: Fix 129 and expand 297’s reach | expand

Commit Message

Max Reitz Jan. 15, 2021, 5:43 p.m. UTC
Instead of checking iotests.py only, check all Python files in the
qemu-iotests/ directory.  Of course, most of them do not pass, so there
is an extensive skip list for now.  (The only files that do pass are
209, 254, 283, and iotests.py.)

(Alternatively, we could have the opposite, i.e. an explicit list of
files that we do want to check, but I think it is better to check files
by default.)

Unless started in debug mode (./check -d), the output has no information
on which files are tested, so we will not have a problem e.g. with
backports, where some files may be missing when compared to upstream.

Besides the technical rewrite, some more things are changed:

- For the pylint invocation, PYTHONPATH is adjusted.  This mirrors
  setting MYPYPATH for mypy.

- Also, MYPYPATH is now derived from PYTHONPATH, so that we include
  paths set by the environment.  Maybe at some point we want to let the
  check script add '../../python/' to PYTHONPATH so that iotests.py does
  not need to do that.

- Passing --notes=FIXME,XXX to pylint suppresses warnings for TODO
  comments.  TODO is fine, we do not need 297 to complain about such
  comments.

- The "Success" line from mypy's output is suppressed, because (A) it
  does not add useful information, and (B) it would leak information
  about the files having been tested to the reference output, which we
  decidedly do not want.

Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/297     | 110 +++++++++++++++++++++++++++++--------
 tests/qemu-iotests/297.out |   5 +-
 2 files changed, 90 insertions(+), 25 deletions(-)

Comments

Willian Rampazzo Jan. 15, 2021, 7:27 p.m. UTC | #1
On Fri, Jan 15, 2021 at 2:43 PM Max Reitz <mreitz@redhat.com> wrote:
>
> Instead of checking iotests.py only, check all Python files in the
> qemu-iotests/ directory.  Of course, most of them do not pass, so there
> is an extensive skip list for now.  (The only files that do pass are
> 209, 254, 283, and iotests.py.)
>
> (Alternatively, we could have the opposite, i.e. an explicit list of
> files that we do want to check, but I think it is better to check files
> by default.)
>
> Unless started in debug mode (./check -d), the output has no information
> on which files are tested, so we will not have a problem e.g. with
> backports, where some files may be missing when compared to upstream.
>
> Besides the technical rewrite, some more things are changed:
>
> - For the pylint invocation, PYTHONPATH is adjusted.  This mirrors
>   setting MYPYPATH for mypy.
>
> - Also, MYPYPATH is now derived from PYTHONPATH, so that we include
>   paths set by the environment.  Maybe at some point we want to let the
>   check script add '../../python/' to PYTHONPATH so that iotests.py does
>   not need to do that.
>
> - Passing --notes=FIXME,XXX to pylint suppresses warnings for TODO
>   comments.  TODO is fine, we do not need 297 to complain about such
>   comments.
>
> - The "Success" line from mypy's output is suppressed, because (A) it
>   does not add useful information, and (B) it would leak information
>   about the files having been tested to the reference output, which we
>   decidedly do not want.
>
> Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
>  tests/qemu-iotests/297     | 110 +++++++++++++++++++++++++++++--------
>  tests/qemu-iotests/297.out |   5 +-
>  2 files changed, 90 insertions(+), 25 deletions(-)
>
> diff --git a/tests/qemu-iotests/297 b/tests/qemu-iotests/297
> index 5c5420712b..fa9e2cac78 100755
> --- a/tests/qemu-iotests/297
> +++ b/tests/qemu-iotests/297
> @@ -1,4 +1,4 @@
> -#!/usr/bin/env bash
> +#!/usr/bin/env python3
>  #
>  # Copyright (C) 2020 Red Hat, Inc.
>  #
> @@ -15,30 +15,96 @@
>  # You should have received a copy of the GNU General Public License
>  # along with this program.  If not, see <http://www.gnu.org/licenses/>.
>
> -seq=$(basename $0)
> -echo "QA output created by $seq"
> +import os
> +import re
> +import shutil
> +import subprocess
> +import sys
>
> -status=1       # failure is the default!
> +import iotests
>
> -# get standard environment
> -. ./common.rc
>
> -if ! type -p "pylint-3" > /dev/null; then
> -    _notrun "pylint-3 not found"
> -fi
> -if ! type -p "mypy" > /dev/null; then
> -    _notrun "mypy not found"
> -fi
> +# TODO: Empty this list!
> +SKIP_FILES = (
> +    '030', '040', '041', '044', '045', '055', '056', '057', '065', '093',
> +    '096', '118', '124', '129', '132', '136', '139', '147', '148', '149',
> +    '151', '152', '155', '163', '165', '169', '194', '196', '199', '202',
> +    '203', '205', '206', '207', '208', '210', '211', '212', '213', '216',
> +    '218', '219', '222', '224', '228', '234', '235', '236', '237', '238',
> +    '240', '242', '245', '246', '248', '255', '256', '257', '258', '260',
> +    '262', '264', '266', '274', '277', '280', '281', '295', '296', '298',
> +    '299', '300', '302', '303', '304', '307',
> +    'nbd-fault-injector.py', 'qcow2.py', 'qcow2_format.py', 'qed.py'
> +)
>
> -pylint-3 --score=n iotests.py
>
> -MYPYPATH=../../python/ mypy --warn-unused-configs --disallow-subclassing-any \
> -    --disallow-any-generics --disallow-incomplete-defs \
> -    --disallow-untyped-decorators --no-implicit-optional \
> -    --warn-redundant-casts --warn-unused-ignores \
> -    --no-implicit-reexport iotests.py
> +def is_python_file(filename):
> +    if not os.path.isfile(filename):
> +        return False
>
> -# success, all done
> -echo "*** done"
> -rm -f $seq.full
> -status=0
> +    if filename.endswith('.py'):
> +        return True
> +
> +    with open(filename) as f:
> +        try:
> +            first_line = f.readline()
> +            return re.match('^#!.*python', first_line) is not None
> +        except UnicodeDecodeError:  # Ignore binary files
> +            return False
> +
> +
> +def run_linters():
> +    files = [filename for filename in (set(os.listdir('.')) - set(SKIP_FILES))
> +             if is_python_file(filename)]
> +
> +    iotests.logger.debug('Files to be checked:')
> +    iotests.logger.debug(', '.join(sorted(files)))
> +
> +    print('=== pylint ===')
> +    sys.stdout.flush()
> +
> +    # Todo notes are fine, but fixme's or xxx's should probably just be
> +    # fixed (in tests, at least)
> +    env = os.environ.copy()
> +    try:
> +        env['PYTHONPATH'] += ':../../python/'

Do you have any objection to using os.path.dirname and os.path.join
here? This would make the code more pythonic.

> +    except KeyError:
> +        env['PYTHONPATH'] = '../../python/'

Same here. You could do it once, before the 'try' and use it inside.

Other than that,

Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Max Reitz Jan. 18, 2021, 10:09 a.m. UTC | #2
On 15.01.21 20:27, Willian Rampazzo wrote:
> On Fri, Jan 15, 2021 at 2:43 PM Max Reitz <mreitz@redhat.com> wrote:
>>
>> Instead of checking iotests.py only, check all Python files in the
>> qemu-iotests/ directory.  Of course, most of them do not pass, so there
>> is an extensive skip list for now.  (The only files that do pass are
>> 209, 254, 283, and iotests.py.)
>>
>> (Alternatively, we could have the opposite, i.e. an explicit list of
>> files that we do want to check, but I think it is better to check files
>> by default.)
>>
>> Unless started in debug mode (./check -d), the output has no information
>> on which files are tested, so we will not have a problem e.g. with
>> backports, where some files may be missing when compared to upstream.
>>
>> Besides the technical rewrite, some more things are changed:
>>
>> - For the pylint invocation, PYTHONPATH is adjusted.  This mirrors
>>    setting MYPYPATH for mypy.
>>
>> - Also, MYPYPATH is now derived from PYTHONPATH, so that we include
>>    paths set by the environment.  Maybe at some point we want to let the
>>    check script add '../../python/' to PYTHONPATH so that iotests.py does
>>    not need to do that.
>>
>> - Passing --notes=FIXME,XXX to pylint suppresses warnings for TODO
>>    comments.  TODO is fine, we do not need 297 to complain about such
>>    comments.
>>
>> - The "Success" line from mypy's output is suppressed, because (A) it
>>    does not add useful information, and (B) it would leak information
>>    about the files having been tested to the reference output, which we
>>    decidedly do not want.
>>
>> Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>> Signed-off-by: Max Reitz <mreitz@redhat.com>
>> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>> ---
>>   tests/qemu-iotests/297     | 110 +++++++++++++++++++++++++++++--------
>>   tests/qemu-iotests/297.out |   5 +-
>>   2 files changed, 90 insertions(+), 25 deletions(-)
>>
>> diff --git a/tests/qemu-iotests/297 b/tests/qemu-iotests/297
>> index 5c5420712b..fa9e2cac78 100755
>> --- a/tests/qemu-iotests/297
>> +++ b/tests/qemu-iotests/297
>> @@ -1,4 +1,4 @@
>> -#!/usr/bin/env bash
>> +#!/usr/bin/env python3
>>   #
>>   # Copyright (C) 2020 Red Hat, Inc.
>>   #
>> @@ -15,30 +15,96 @@
>>   # You should have received a copy of the GNU General Public License
>>   # along with this program.  If not, see <http://www.gnu.org/licenses/>.
>>
>> -seq=$(basename $0)
>> -echo "QA output created by $seq"
>> +import os
>> +import re
>> +import shutil
>> +import subprocess
>> +import sys
>>
>> -status=1       # failure is the default!
>> +import iotests
>>
>> -# get standard environment
>> -. ./common.rc
>>
>> -if ! type -p "pylint-3" > /dev/null; then
>> -    _notrun "pylint-3 not found"
>> -fi
>> -if ! type -p "mypy" > /dev/null; then
>> -    _notrun "mypy not found"
>> -fi
>> +# TODO: Empty this list!
>> +SKIP_FILES = (
>> +    '030', '040', '041', '044', '045', '055', '056', '057', '065', '093',
>> +    '096', '118', '124', '129', '132', '136', '139', '147', '148', '149',
>> +    '151', '152', '155', '163', '165', '169', '194', '196', '199', '202',
>> +    '203', '205', '206', '207', '208', '210', '211', '212', '213', '216',
>> +    '218', '219', '222', '224', '228', '234', '235', '236', '237', '238',
>> +    '240', '242', '245', '246', '248', '255', '256', '257', '258', '260',
>> +    '262', '264', '266', '274', '277', '280', '281', '295', '296', '298',
>> +    '299', '300', '302', '303', '304', '307',
>> +    'nbd-fault-injector.py', 'qcow2.py', 'qcow2_format.py', 'qed.py'
>> +)
>>
>> -pylint-3 --score=n iotests.py
>>
>> -MYPYPATH=../../python/ mypy --warn-unused-configs --disallow-subclassing-any \
>> -    --disallow-any-generics --disallow-incomplete-defs \
>> -    --disallow-untyped-decorators --no-implicit-optional \
>> -    --warn-redundant-casts --warn-unused-ignores \
>> -    --no-implicit-reexport iotests.py
>> +def is_python_file(filename):
>> +    if not os.path.isfile(filename):
>> +        return False
>>
>> -# success, all done
>> -echo "*** done"
>> -rm -f $seq.full
>> -status=0
>> +    if filename.endswith('.py'):
>> +        return True
>> +
>> +    with open(filename) as f:
>> +        try:
>> +            first_line = f.readline()
>> +            return re.match('^#!.*python', first_line) is not None
>> +        except UnicodeDecodeError:  # Ignore binary files
>> +            return False
>> +
>> +
>> +def run_linters():
>> +    files = [filename for filename in (set(os.listdir('.')) - set(SKIP_FILES))
>> +             if is_python_file(filename)]
>> +
>> +    iotests.logger.debug('Files to be checked:')
>> +    iotests.logger.debug(', '.join(sorted(files)))
>> +
>> +    print('=== pylint ===')
>> +    sys.stdout.flush()
>> +
>> +    # Todo notes are fine, but fixme's or xxx's should probably just be
>> +    # fixed (in tests, at least)
>> +    env = os.environ.copy()
>> +    try:
>> +        env['PYTHONPATH'] += ':../../python/'
> 
> Do you have any objection to using os.path.dirname and os.path.join
> here? This would make the code more pythonic.

Intuitively, I felt a bit uneasy about os.path.join here, because it 
would make it look like this was platform-independent, when it is not: 
The colon as a PATH separator is probably more platform-dependent than 
the slashes.

So turns out there is os.pathsep, which yields a colon on e.g. Linux and 
a semicolon on e.g. Windows.

I wondered if

   env['PYTHONPATH'] = os.pathsep.join(sys.path)

wouldn’t be the most simple solution, but seems like mypy doesn’t like 
that very much for the MYPYPATH.  Too bad.

Guess the try-except block will have to remain, then.
(Just with os.pathsep instead of a colon, and with 
os.path.join(os.path.dirname(__file__), ...).)

Max
Willian Rampazzo Feb. 8, 2021, 8:27 p.m. UTC | #3
On 1/18/21 7:09 AM, Max Reitz wrote:
> On 15.01.21 20:27, Willian Rampazzo wrote:
>> On Fri, Jan 15, 2021 at 2:43 PM Max Reitz <mreitz@redhat.com> wrote:
>>>
>>> Instead of checking iotests.py only, check all Python files in the
>>> qemu-iotests/ directory.  Of course, most of them do not pass, so there
>>> is an extensive skip list for now.  (The only files that do pass are
>>> 209, 254, 283, and iotests.py.)
>>>
>>> (Alternatively, we could have the opposite, i.e. an explicit list of
>>> files that we do want to check, but I think it is better to check files
>>> by default.)
>>>
>>> Unless started in debug mode (./check -d), the output has no information
>>> on which files are tested, so we will not have a problem e.g. with
>>> backports, where some files may be missing when compared to upstream.
>>>
>>> Besides the technical rewrite, some more things are changed:
>>>
>>> - For the pylint invocation, PYTHONPATH is adjusted.  This mirrors
>>>    setting MYPYPATH for mypy.
>>>
>>> - Also, MYPYPATH is now derived from PYTHONPATH, so that we include
>>>    paths set by the environment.  Maybe at some point we want to let the
>>>    check script add '../../python/' to PYTHONPATH so that iotests.py 
>>> does
>>>    not need to do that.
>>>
>>> - Passing --notes=FIXME,XXX to pylint suppresses warnings for TODO
>>>    comments.  TODO is fine, we do not need 297 to complain about such
>>>    comments.
>>>
>>> - The "Success" line from mypy's output is suppressed, because (A) it
>>>    does not add useful information, and (B) it would leak information
>>>    about the files having been tested to the reference output, which we
>>>    decidedly do not want.
>>>
>>> Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>>> Signed-off-by: Max Reitz <mreitz@redhat.com>
>>> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
>>> ---
>>>   tests/qemu-iotests/297     | 110 +++++++++++++++++++++++++++++--------
>>>   tests/qemu-iotests/297.out |   5 +-
>>>   2 files changed, 90 insertions(+), 25 deletions(-)
>>>
>>> diff --git a/tests/qemu-iotests/297 b/tests/qemu-iotests/297
>>> index 5c5420712b..fa9e2cac78 100755
>>> --- a/tests/qemu-iotests/297
>>> +++ b/tests/qemu-iotests/297
>>> @@ -1,4 +1,4 @@
>>> -#!/usr/bin/env bash
>>> +#!/usr/bin/env python3
>>>   #
>>>   # Copyright (C) 2020 Red Hat, Inc.
>>>   #
>>> @@ -15,30 +15,96 @@
>>>   # You should have received a copy of the GNU General Public License
>>>   # along with this program.  If not, see 
>>> <http://www.gnu.org/licenses/>.
>>>
>>> -seq=$(basename $0)
>>> -echo "QA output created by $seq"
>>> +import os
>>> +import re
>>> +import shutil
>>> +import subprocess
>>> +import sys
>>>
>>> -status=1       # failure is the default!
>>> +import iotests
>>>
>>> -# get standard environment
>>> -. ./common.rc
>>>
>>> -if ! type -p "pylint-3" > /dev/null; then
>>> -    _notrun "pylint-3 not found"
>>> -fi
>>> -if ! type -p "mypy" > /dev/null; then
>>> -    _notrun "mypy not found"
>>> -fi
>>> +# TODO: Empty this list!
>>> +SKIP_FILES = (
>>> +    '030', '040', '041', '044', '045', '055', '056', '057', '065', 
>>> '093',
>>> +    '096', '118', '124', '129', '132', '136', '139', '147', '148', 
>>> '149',
>>> +    '151', '152', '155', '163', '165', '169', '194', '196', '199', 
>>> '202',
>>> +    '203', '205', '206', '207', '208', '210', '211', '212', '213', 
>>> '216',
>>> +    '218', '219', '222', '224', '228', '234', '235', '236', '237', 
>>> '238',
>>> +    '240', '242', '245', '246', '248', '255', '256', '257', '258', 
>>> '260',
>>> +    '262', '264', '266', '274', '277', '280', '281', '295', '296', 
>>> '298',
>>> +    '299', '300', '302', '303', '304', '307',
>>> +    'nbd-fault-injector.py', 'qcow2.py', 'qcow2_format.py', 'qed.py'
>>> +)
>>>
>>> -pylint-3 --score=n iotests.py
>>>
>>> -MYPYPATH=../../python/ mypy --warn-unused-configs 
>>> --disallow-subclassing-any \
>>> -    --disallow-any-generics --disallow-incomplete-defs \
>>> -    --disallow-untyped-decorators --no-implicit-optional \
>>> -    --warn-redundant-casts --warn-unused-ignores \
>>> -    --no-implicit-reexport iotests.py
>>> +def is_python_file(filename):
>>> +    if not os.path.isfile(filename):
>>> +        return False
>>>
>>> -# success, all done
>>> -echo "*** done"
>>> -rm -f $seq.full
>>> -status=0
>>> +    if filename.endswith('.py'):
>>> +        return True
>>> +
>>> +    with open(filename) as f:
>>> +        try:
>>> +            first_line = f.readline()
>>> +            return re.match('^#!.*python', first_line) is not None
>>> +        except UnicodeDecodeError:  # Ignore binary files
>>> +            return False
>>> +
>>> +
>>> +def run_linters():
>>> +    files = [filename for filename in (set(os.listdir('.')) - 
>>> set(SKIP_FILES))
>>> +             if is_python_file(filename)]
>>> +
>>> +    iotests.logger.debug('Files to be checked:')
>>> +    iotests.logger.debug(', '.join(sorted(files)))
>>> +
>>> +    print('=== pylint ===')
>>> +    sys.stdout.flush()
>>> +
>>> +    # Todo notes are fine, but fixme's or xxx's should probably just be
>>> +    # fixed (in tests, at least)
>>> +    env = os.environ.copy()
>>> +    try:
>>> +        env['PYTHONPATH'] += ':../../python/'
>>
>> Do you have any objection to using os.path.dirname and os.path.join
>> here? This would make the code more pythonic.
> 
> Intuitively, I felt a bit uneasy about os.path.join here, because it 
> would make it look like this was platform-independent, when it is not: 
> The colon as a PATH separator is probably more platform-dependent than 
> the slashes.
> 
> So turns out there is os.pathsep, which yields a colon on e.g. Linux and 
> a semicolon on e.g. Windows.
> 
> I wondered if
> 
>    env['PYTHONPATH'] = os.pathsep.join(sys.path)
> 
> wouldn’t be the most simple solution, but seems like mypy doesn’t like 
> that very much for the MYPYPATH.  Too bad.
> 
> Guess the try-except block will have to remain, then.
> (Just with os.pathsep instead of a colon, and with 
> os.path.join(os.path.dirname(__file__), ...).)
> 
> Max
> 

Sorry to take so long to answer, I was on vacation. I see v5 was already 
merged. I took a look at it and the developed solution looks good, 
thanks for all your effort here.
diff mbox series

Patch

diff --git a/tests/qemu-iotests/297 b/tests/qemu-iotests/297
index 5c5420712b..fa9e2cac78 100755
--- a/tests/qemu-iotests/297
+++ b/tests/qemu-iotests/297
@@ -1,4 +1,4 @@ 
-#!/usr/bin/env bash
+#!/usr/bin/env python3
 #
 # Copyright (C) 2020 Red Hat, Inc.
 #
@@ -15,30 +15,96 @@ 
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-seq=$(basename $0)
-echo "QA output created by $seq"
+import os
+import re
+import shutil
+import subprocess
+import sys
 
-status=1	# failure is the default!
+import iotests
 
-# get standard environment
-. ./common.rc
 
-if ! type -p "pylint-3" > /dev/null; then
-    _notrun "pylint-3 not found"
-fi
-if ! type -p "mypy" > /dev/null; then
-    _notrun "mypy not found"
-fi
+# TODO: Empty this list!
+SKIP_FILES = (
+    '030', '040', '041', '044', '045', '055', '056', '057', '065', '093',
+    '096', '118', '124', '129', '132', '136', '139', '147', '148', '149',
+    '151', '152', '155', '163', '165', '169', '194', '196', '199', '202',
+    '203', '205', '206', '207', '208', '210', '211', '212', '213', '216',
+    '218', '219', '222', '224', '228', '234', '235', '236', '237', '238',
+    '240', '242', '245', '246', '248', '255', '256', '257', '258', '260',
+    '262', '264', '266', '274', '277', '280', '281', '295', '296', '298',
+    '299', '300', '302', '303', '304', '307',
+    'nbd-fault-injector.py', 'qcow2.py', 'qcow2_format.py', 'qed.py'
+)
 
-pylint-3 --score=n iotests.py
 
-MYPYPATH=../../python/ mypy --warn-unused-configs --disallow-subclassing-any \
-    --disallow-any-generics --disallow-incomplete-defs \
-    --disallow-untyped-decorators --no-implicit-optional \
-    --warn-redundant-casts --warn-unused-ignores \
-    --no-implicit-reexport iotests.py
+def is_python_file(filename):
+    if not os.path.isfile(filename):
+        return False
 
-# success, all done
-echo "*** done"
-rm -f $seq.full
-status=0
+    if filename.endswith('.py'):
+        return True
+
+    with open(filename) as f:
+        try:
+            first_line = f.readline()
+            return re.match('^#!.*python', first_line) is not None
+        except UnicodeDecodeError:  # Ignore binary files
+            return False
+
+
+def run_linters():
+    files = [filename for filename in (set(os.listdir('.')) - set(SKIP_FILES))
+             if is_python_file(filename)]
+
+    iotests.logger.debug('Files to be checked:')
+    iotests.logger.debug(', '.join(sorted(files)))
+
+    print('=== pylint ===')
+    sys.stdout.flush()
+
+    # Todo notes are fine, but fixme's or xxx's should probably just be
+    # fixed (in tests, at least)
+    env = os.environ.copy()
+    try:
+        env['PYTHONPATH'] += ':../../python/'
+    except KeyError:
+        env['PYTHONPATH'] = '../../python/'
+    subprocess.run(('pylint-3', '--score=n', '--notes=FIXME,XXX', *files),
+                   env=env, check=False)
+
+    print('=== mypy ===')
+    sys.stdout.flush()
+
+    # We have to call mypy separately for each file.  Otherwise, it
+    # will interpret all given files as belonging together (i.e., they
+    # may not both define the same classes, etc.; most notably, they
+    # must not both define the __main__ module).
+    env['MYPYPATH'] = env['PYTHONPATH']
+    for filename in files:
+        p = subprocess.run(('mypy',
+                            '--warn-unused-configs',
+                            '--disallow-subclassing-any',
+                            '--disallow-any-generics',
+                            '--disallow-incomplete-defs',
+                            '--disallow-untyped-decorators',
+                            '--no-implicit-optional',
+                            '--warn-redundant-casts',
+                            '--warn-unused-ignores',
+                            '--no-implicit-reexport',
+                            filename),
+                           env=env,
+                           check=False,
+                           stdout=subprocess.PIPE,
+                           stderr=subprocess.STDOUT,
+                           universal_newlines=True)
+
+        if p.returncode != 0:
+            print(p.stdout)
+
+
+for linter in ('pylint-3', 'mypy'):
+    if shutil.which(linter) is None:
+        iotests.notrun(f'{linter} not found')
+
+iotests.script_main(run_linters)
diff --git a/tests/qemu-iotests/297.out b/tests/qemu-iotests/297.out
index 6acc843649..f2e1314d10 100644
--- a/tests/qemu-iotests/297.out
+++ b/tests/qemu-iotests/297.out
@@ -1,3 +1,2 @@ 
-QA output created by 297
-Success: no issues found in 1 source file
-*** done
+=== pylint ===
+=== mypy ===