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Applying max_colwidth to the DataFrame index (#7856) #8954

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Applying max_colwidth to the DataFrame index (#7856) #8954

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de1faaa
Applying max_colwidth to the DataFrame index (#7856)
tiagoantao Nov 30, 2014
2fcd81d
test case
tiagoantao Dec 2, 2014
362b517
Merge remote-tracking branch 'upstream/master' into colwidth
tiagoantao Jan 8, 2015
c917350
Merge remote-tracking branch 'upstream/master' into colwidth
tiagoantao Mar 8, 2015
ad262bc
Bug on representation of index (#7856): corrected test and added what…
tiagoantao Mar 8, 2015
23b8a04
Merge remote-tracking branch 'upstream/master' into colwidth
tiagoantao Mar 9, 2015
7228df2
Bug on representation of index (#7856): refactored test
tiagoantao Mar 9, 2015
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2 changes: 2 additions & 0 deletions doc/source/whatsnew/v0.16.0.txt
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Expand Up @@ -543,3 +543,5 @@ Bug Fixes


- Bug in ``Series.values_counts`` with excluding ``NaN`` for categorical type ``Series`` with ``dropna=True`` (:issue:`9443`)

- Bug in ``DataFrameFormatter._get_formatted_index`` with not applying ``max_colwidth`` to the ``DataFrame`` index (:issue:`7856`)
3 changes: 3 additions & 0 deletions pandas/core/format.py
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Expand Up @@ -746,6 +746,9 @@ def _get_formatted_index(self, frame):
formatter=fmt)
else:
fmt_index = [index.format(name=show_index_names, formatter=fmt)]
fmt_index = [tuple(_make_fixed_width(
list(x), justify='left', minimum=(self.col_space or 0)))
for x in fmt_index]

adjoined = adjoin(1, *fmt_index).split('\n')

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15 changes: 15 additions & 0 deletions pandas/tests/test_format.py
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Expand Up @@ -298,6 +298,21 @@ def mkframe(n):
com.pprint_thing(df._repr_fits_horizontal_())
self.assertTrue(has_expanded_repr(df))

def test_str_max_colwidth(self):
# GH 7856
df = pd.DataFrame([{'a': 'foo', 'b': 'bar',
'c': 'uncomfortably long line with lots of stuff',
'd': 1},
{'a': 'foo', 'b': 'bar', 'c': 'stuff', 'd': 1}])
df.set_index(['a', 'b', 'c'])
self.assertTrue(str(df) == ' a b c d\n'
'0 foo bar uncomfortably long line with lots of stuff 1\n'
'1 foo bar stuff 1')
with option_context('max_colwidth', 20):
self.assertTrue(str(df) == ' a b c d\n'
'0 foo bar uncomfortably lo... 1\n'
'1 foo bar stuff 1')

def test_auto_detect(self):
term_width, term_height = get_terminal_size()
fac = 1.05 # Arbitrary large factor to exceed term widht
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