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Re: [PATCH v2 2/2] iotests: Remove Python 2 compatibility code


From: Thomas Huth
Subject: Re: [PATCH v2 2/2] iotests: Remove Python 2 compatibility code
Date: Thu, 19 Sep 2019 18:42:56 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 19/09/2019 18.29, Kevin Wolf wrote:
> Some scripts check the Python version number and have two code paths to
> accomodate both Python 2 and 3. Remove the code specific to Python 2 and
> assert the minimum version of 3.6 instead (check skips Python tests in
> this case, so the assertion would only ever trigger if a Python script
> is executed manually).
> 
> Signed-off-by: Kevin Wolf <address@hidden>
> ---
>  tests/qemu-iotests/044                   |  3 ---
>  tests/qemu-iotests/163                   |  3 ---
>  tests/qemu-iotests/iotests.py            | 13 +++----------
>  tests/qemu-iotests/nbd-fault-injector.py |  7 +++----
>  4 files changed, 6 insertions(+), 20 deletions(-)
> 
> diff --git a/tests/qemu-iotests/044 b/tests/qemu-iotests/044
> index 05ea1f49c5..8b2afa2a11 100755
> --- a/tests/qemu-iotests/044
> +++ b/tests/qemu-iotests/044
> @@ -28,9 +28,6 @@ import struct
>  import subprocess
>  import sys
>  
> -if sys.version_info.major == 2:
> -    range = xrange
> -
>  test_img = os.path.join(iotests.test_dir, 'test.img')
>  
>  class TestRefcountTableGrowth(iotests.QMPTestCase):
> diff --git a/tests/qemu-iotests/163 b/tests/qemu-iotests/163
> index 081ccc8ac1..d94728e080 100755
> --- a/tests/qemu-iotests/163
> +++ b/tests/qemu-iotests/163
> @@ -21,9 +21,6 @@
>  import os, random, iotests, struct, qcow2, sys
>  from iotests import qemu_img, qemu_io, image_size
>  
> -if sys.version_info.major == 2:
> -    range = xrange
> -
>  test_img = os.path.join(iotests.test_dir, 'test.img')
>  check_img = os.path.join(iotests.test_dir, 'check.img')
>  
> diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
> index b26271187c..9fb5181c3d 100644
> --- a/tests/qemu-iotests/iotests.py
> +++ b/tests/qemu-iotests/iotests.py
> @@ -35,6 +35,7 @@ from collections import OrderedDict
>  sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 
> 'python'))
>  from qemu import qtest
>  
> +assert sys.version_info >= (3,6)
>  
>  # This will not work if arguments contain spaces but is necessary if we
>  # want to support the override options that ./check supports.
> @@ -250,10 +251,7 @@ def image_size(img):
>      return json.loads(r)['virtual-size']
>  
>  def is_str(val):
> -    if sys.version_info.major >= 3:
> -        return isinstance(val, str)
> -    else:
> -        return isinstance(val, str) or isinstance(val, unicode)
> +    return isinstance(val, str)
>  
>  test_dir_re = re.compile(r"%s" % test_dir)
>  def filter_test_dir(msg):
> @@ -935,12 +933,7 @@ def execute_test(test_function=None,
>      else:
>          # We need to filter out the time taken from the output so that
>          # qemu-iotest can reliably diff the results against master output.
> -        if sys.version_info.major >= 3:
> -            output = io.StringIO()
> -        else:
> -            # io.StringIO is for unicode strings, which is not what
> -            # 2.x's test runner emits.
> -            output = io.BytesIO()
> +        output = io.StringIO()
>  
>      logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN))
>  
> diff --git a/tests/qemu-iotests/nbd-fault-injector.py 
> b/tests/qemu-iotests/nbd-fault-injector.py
> index 6b2d659dee..43f095ceef 100755
> --- a/tests/qemu-iotests/nbd-fault-injector.py
> +++ b/tests/qemu-iotests/nbd-fault-injector.py
> @@ -48,10 +48,9 @@ import sys
>  import socket
>  import struct
>  import collections
> -if sys.version_info.major >= 3:
> -    import configparser
> -else:
> -    import ConfigParser as configparser
> +import configparser
> +
> +assert sys.version_info >= (3,6)
>  
>  FAKE_DISK_SIZE = 8 * 1024 * 1024 * 1024 # 8 GB
>  

Reviewed-by: Thomas Huth <address@hidden>




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