Comments (6)
I have the same exact problem. The method set_field_names is not present in
version 6:
print(dir(pt))
['__class__', '__delattr__', '__dict__', '__doc__', '__format__',
'__getattr__', '__getattribute__', '__getitem__', '__hash__', '__init__',
'__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__',
'__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__unicode__',
'__weakref__', '_align', '_attributes', '_border', '_compute_widths', '_end',
'_field_names', '_fields', '_float_format', '_format', '_format_value',
'_get_align', '_get_attributes', '_get_border', '_get_end', '_get_field_names',
'_get_float_format', '_get_format', '_get_formatted_html_string',
'_get_header', '_get_horizontal_char', '_get_hrules', '_get_int_format',
'_get_junction_char', '_get_left_padding_width', '_get_max_width',
'_get_options', '_get_padding_width', '_get_padding_widths',
'_get_reversesort', '_get_right_padding_width', '_get_rows',
'_get_simple_html_string', '_get_sort_key', '_get_sortby', '_get_start',
'_get_vertical_char', '_header', '_horizontal_char', '_hrules', '_int_format',
'_junction_char', '_left_padding_width', '_max_width', '_options',
'_padding_width', '_reversesort', '_right_padding_width', '_rows',
'_set_align', '_set_attributes', '_set_border', '_set_columns_style',
'_set_default_style', '_set_end', '_set_field_names', '_set_float_format',
'_set_format', '_set_header', '_set_horizontal_char', '_set_hrules',
'_set_int_format', '_set_junction_char', '_set_left_padding_width',
'_set_max_width', '_set_msword_style', '_set_padding_width',
'_set_random_style', '_set_reversesort', '_set_right_padding_width',
'_set_sort_key', '_set_sortby', '_set_start', '_set_vertical_char',
'_sort_key', '_sortby', '_start', '_stringify_header', '_stringify_hrule',
'_stringify_row', '_validate_align', '_validate_all_field_names',
'_validate_attributes', '_validate_field_name', '_validate_float_format',
'_validate_function', '_validate_hrules', '_validate_int_format',
'_validate_nonnegative_int', '_validate_option', '_validate_single_char',
'_validate_true_or_false', '_vertical_char', '_widths', 'add_column',
'add_row', 'align', 'attributes', 'border', 'clear', 'clear_rows', 'copy',
'del_row', 'encoding', 'end', 'field_names', 'float_format', 'format',
'get_html_string', 'get_string', 'header', 'horizontal_char', 'hrules',
'int_format', 'junction_char', 'left_padding_width', 'max_width',
'padding_width', 'reversesort', 'right_padding_width', 'set_style', 'sort_key',
'sortby', 'start', 'vertical_char']
_set_field_names is present, though.
Original comment by [email protected]
on 20 Jan 2013 at 11:11
from prettytable.
As of PrettyTable 0.6, the set_field_names() method no longer exists. 0.6 was
a deliberately compatibility-breaking release to improve the API. However, I
kind of dropped the ball on thoroughly documenting the changes and the Wiki
sometimes includes example code using the old style. So this is really a
documentation bug, not a code bug.
To set field names in 0.6 and beyond, use the following syntax:
pt.field_names = ["Foo", "Bar", "Baz"]
If this doesn't work, then *that* is a code bug - please let me know.
Original comment by [email protected]
on 21 Jan 2013 at 9:06
- Changed state: Invalid
from prettytable.
I understand your decision. However, this makes prettytable particularly
difficult to use in our environment, as we cannot be sure which version of
prettytable is installed. In particular, prettytable is in 0.5 in Debian
squeeze and is likely to stay that forever [1]. On the other hand, it is rather
current in the most recent Ubuntu LTS [2].
What do you suggest? It might be after all that compatibility methods that
first issue a warning (0.6), then an error unless it is explicitly enabled
(0.7) and only after that are removed (0.8 or 1.0) would have been a safer bet.
[1] http://packages.debian.org/squeeze/python-prettytable
[2] https://launchpad.net/ubuntu/+source/prettytable
Original comment by [email protected]
on 21 Jan 2013 at 9:34
from prettytable.
Ah. I understand the difficult situation you are in, writing code that you
would like to work out of the box on Debian and Ubuntu. I apologise that the
abrupt change in API has put you in this situation. I think that at the time
(and probably still even now) I drastically underestimated how widely
PrettyTable was deployed.
The gradual transition probably would have been best, although I do not know
what I can do now to fix it, since Squeeze will never see it's PrettyTable
package updated. It looks like Wheezy has 0.6 in it, so hopefully things will
become easier when Wheezy becomes stable (which hopefully is not too far off),
although I am sure that is of little consolation to you now.
One option of course would be to subclass PrettyTable and in your custom class
write a set_field_names method which uses the value of prettytable.__version__
to test if you are at 0.5 or 0.6 (effectively, Debian or Ubuntu) and then do
the appropriate thing. This is a little ugly, but at least it should let you
use the same code on both platforms.
Alternatively, if this would work well in your environment, I could maybe set
up an apt repository which hosted the latest version of PrettyTable packaged up
for Debian stable. You could add that to your apt sources list and that way
get 0.6 on Debian. But I understand that you may be in an environment where
that kind of change is not easy/acceptable. Let me know if you are interested
and I will look into this option - I've never hosted an apt repo before, or
even packaged up a .deb, so I can't guarantee quick turn around time, but I
will give it my best to make up for this situation.
In future, I will be more careful about compatibility breaks!
Original comment by [email protected]
on 21 Jan 2013 at 10:01
from prettytable.
Thank you for your fast reply. Perhaps the easiest thing for our project would
be to include a static copy of prettytable, so please don't bother setting up
an apt repo. Still, you could add compatibility methods to the current version
of prettytable *if* this is an easy thing to test, perhaps with a "deprecated"
decorator [1]? I'm not sure if that would reach current LTS, though.
[1] http://code.activestate.com/recipes/577819-deprecated-decorator/
Original comment by [email protected]
on 22 Jan 2013 at 12:00
from prettytable.
Alright, I won't worry about the apt repo. I hope the static copy solution
works well for you.
Regarding the deprecated decorator...well, first off, I will definitely use
that kind of stuff for future syntax changes (although hopefully they will be
rare, the idea was for 0.6 to be "one big compatibility breaking release" to
get things looking their best and then for syntax to never change).
As for addressing this particular problem...well, I have just spoken to the guy
who packages pt for the official Debian repositories, and it is basically too
late for anything I release now to make it into Wheezy without a lot of
trouble, and I don't want to trouble the volunteer packager by insisting he
push anything through. So even if I added a deprecation notice and released
0.7 right this minute, nobody who uses Debian would see it for about two years.
Presumably by that time they will have changed their code anyway. Also, by
the time the Debian release after Wheezy comes out we'll hopefully be a few
more versions of PrettyTable along.
I don't know what the policy is for Ubuntu's LTS, but like you said it may not
reach that either, in which case it probably wouldn't end up doing anybody much
good.
Original comment by [email protected]
on 22 Jan 2013 at 1:01
from prettytable.
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from prettytable.