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Re: [Xen-devel] [PATCH for-next RFC 3/4] pygrub: convert python files with 2to3
- To: Wei Liu <wei.liu2@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 5 Mar 2019 17:51:04 +0000
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- Cc: George Dunlap <george.dunlap@xxxxxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
- Delivery-date: Tue, 05 Mar 2019 17:53:25 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 05/03/2019 16:42, Wei Liu wrote:
> Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> ---
> Not sure this works with python 2.4, but it should work with 2.7 since
> the changes look more or less in the same vein as the changes in
> libxl.
>
> The conversion of the import is interesting. This definitely needs
> some testing.
> ---
> tools/pygrub/src/ExtLinuxConf.py | 16 ++++++++--------
> tools/pygrub/src/GrubConf.py | 36 ++++++++++++++++++------------------
> tools/pygrub/src/LiloConf.py | 16 ++++++++--------
> 3 files changed, 34 insertions(+), 34 deletions(-)
>
> diff --git a/tools/pygrub/src/ExtLinuxConf.py
> b/tools/pygrub/src/ExtLinuxConf.py
> index d1789bf020..60da960c4b 100644
> --- a/tools/pygrub/src/ExtLinuxConf.py
> +++ b/tools/pygrub/src/ExtLinuxConf.py
> @@ -12,7 +12,7 @@
>
> import sys, re, os
> import logging
> -import GrubConf
> +from . import GrubConf
Relative imports definitely don't exist in Py 2.4
>
> class ExtLinuxImage(object):
> def __init__(self, lines, path):
> @@ -32,7 +32,7 @@ class ExtLinuxImage(object):
> self.lines = []
> self.path = path
> self.root = ""
> - map(self.set_from_line, lines)
> + list(map(self.set_from_line, lines))
This an abuse of map() in the first place, but the automatic
transformation makes the result even more confusing.
Instead, I'd rewrite the code as
for line in lines:
self.set_from_line(line)
which makes it clear what is actually going on.
~Andrew
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