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Helper to pretty print an ascii table with a tree-like structure.
treetable
requires at least python3.6.
pip3 install treetable
treetable
allows to easily output complex ascii tables like
|| || metrics
|| info || train | test
name || index status || Pr recall | auc accuracy
RirpUoE || 21 L || 94.4% 56.4% | 46.3% 79.6%
wtAYHBf || ||
j || ||
rLsITTK || 47 q || 66.0% 84.8% | 46.5% 64.9%
S || ||
Uumlvod || 49 Z || 63.1% 99.8% | 94.6% 10.6%
SmIsO || ||
rzXlDqM || 32 J || 48.8% 33.5% | 30.8% 94.2%
PyCX || ||
The main function is treetable.treetable
. It takes a tree-like structure
to represent the table. For instance, I could have a sub-table info
and
a sub-table metrics
, each one being recursively composed of other sub-tables.
Each extra level of sub-tables use a different separator (by default up to 3
levels but you can provide extra separators with the separators
arguments).
At the leaf level of the tree, a format string (that can be passed to the
format
builtin) can be specified. Let's take an example
from treetable import table, group, leaf
mytable = table([
group('info', [
leaf('name'),
leaf('index')]),
group('metrics', align='>', groups=[
leaf('speed', '.0f'),
leaf('accuracy', '.1%'),
leaf('special', '.1%', align='=')]),
])
The lines of the table should be provided following a list of nested dictionaries with the same shape, for instance:
lines = [
{'info': {'name': 'bob', 'index': 4}, 'metrics':{'speed': 200, 'accuracy': 0.21, 'special': 0.1}},
{'info': {'name': 'alice', 'index': 2}, 'metrics':{'speed': 67, 'accuracy': 0.45, 'special': 4.56}},
]
Now running print(treetable(lines, groups))
will give you
info | metrics
name index | speed accuracy special
bob 4 | 200 21.0% 10.0%
alice 2 | 67 45.0% 456.0%
table
, group
and leaf
are all node definition functions. They all
accept the same arguments and differ only in the order of positional arguments.
When defined in a leaf node, the arguments will directly influence
how the data is rendered. In group nodes or the root (aka table) node,
they will override the default behaviors in descendent leafs. The following
arguments are defined:
key
: access key in the lines
data structure.groups
(only for group
and table
nodes): list of sub-tables.display
: display name used, when different to the name to access
the value in the lines
structure.align
: alignment of text, either '<' (left aligned), '=' (centered) or
'>' (right aligned).wrap
: wrap text beyond a certain number of characters. No smart wrapping,
this will wrap exactly at the limit characters by inserting a new line.missing
: value used when a specific key is not present. Default
is ''
.shorten
: automatically shorten columns names. They are not shorten
any more than the width of the underlying column and a long enough prefix
is kept to remove any possible ambiguity with other columns in the same
sub-tab le.For instance, when using shorten=True
with the above table:
info | metrics
name i | spee accur specia
bob 4 | 200 21.0% 10.0%
alice 2 | 67 45.0% 456.0%
name
wasn't shortened because alice
is longer than name
so there would
be no point in shortening it. However speed
is kept long enough
to avoid ambiguity with special
.
When setting wrap=3
for the name
column we obtain the following:
info | metrics
nam i | spee accur specia
bob 4 | 200 21.0% 10.0%
ali 2 | 67 45.0% 456.0%
ce |
It is possible to customize the column separators by passing
separators
to the treetable
function. Its default value is
[' ', ' | ', ' || ']
.
It is possible to use ANSI color codes by passing a list of color codes to treetable()
with the colors
argument.
The i-th line (including headers) will have the color colors[i % len(colors]
. For instance:
treetable(lines, mytable, colors=["30", "39"])
For a good reference on ANSI color codes, checkout this stackoverflow question.
treetable
is distributed under the Unlicense license.
See the LICENSE file for more information.
FAQs
Helper to pretty print an ascii table with atree-like structure
We found that treetable demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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