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Fix DataFrame.to_string() justification #22437

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Fix DataFrame.to_string() justification #22437

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04bdc30
Fix to_string()
Aug 21, 2018
1db02f6
Fix flake8 errors
Aug 21, 2018
28a6ea0
Updated tests. test_format now passes
Aug 22, 2018
580a81c
Update tests
Aug 25, 2018
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10 changes: 6 additions & 4 deletions pandas/io/formats/format.py
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Original file line number Diff line number Diff line change
Expand Up @@ -650,8 +650,6 @@ def to_string(self):
self._chk_truncate()
strcols = self._to_str_columns()
text = self.adj.adjoin(1, *strcols)
if not self.index:
text = text.replace('\n ', '\n').strip()
self.buf.writelines(text)

if self.should_show_dimensions:
Expand Down Expand Up @@ -681,6 +679,10 @@ def _join_multiline(self, *strcols):
st = 0
for i, ed in enumerate(col_bins):
row = strcols[st:ed]
if i > 0 and not self.index:
has_leading_sp = all(e[0] == ' ' for e in row[0])
if has_leading_sp:
row[0] = [e[1:] for e in row[0]]
if self.index:
row.insert(0, idx)
if nbins > 1:
Expand Down Expand Up @@ -790,7 +792,7 @@ def space_format(x, y):
dtypes = self.frame.dtypes
need_leadsp = dict(zip(fmt_columns, map(is_numeric_dtype, dtypes)))
str_columns = [[' ' + x if not self._get_formatter(i) and
need_leadsp[x] else x]
need_leadsp[x] and (self.index or i > 0) else x]
for i, (col, x) in enumerate(zip(columns,
fmt_columns))]

Expand Down Expand Up @@ -1106,7 +1108,7 @@ def _format_strings(self):
class IntArrayFormatter(GenericArrayFormatter):

def _format_strings(self):
formatter = self.formatter or (lambda x: '{x: d}'.format(x=x))
formatter = self.formatter or (lambda x: '{x:d}'.format(x=x))
fmt_values = [formatter(x) for x in self.values]
return fmt_values

Expand Down
2 changes: 1 addition & 1 deletion pandas/tests/arrays/categorical/test_repr.py
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ def test_empty_print(self):
def test_print_none_width(self):
# GH10087
a = Series(Categorical([1, 2, 3, 4]))
exp = u("0 1\n1 2\n2 3\n3 4\n" +
exp = u("0 1\n1 2\n2 3\n3 4\n" +
"dtype: category\nCategories (4, int64): [1, 2, 3, 4]")

with option_context("display.width", None):
Expand Down
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