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TST: add test to io/formats/test_to_html.py to close GH6131 #22588

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Merged
merged 4 commits into from
Sep 9, 2018
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TST: add test to io/formats/test_to_html.py to close GH6131 #22588

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96938c4
TST: add test for GH6131
simonjayhawkins Sep 4, 2018
65d65d1
Merge remote-tracking branch 'upstream/master' into issue6131
simonjayhawkins Sep 5, 2018
2d9c48f
create result of pivot_table example explicitly
simonjayhawkins Sep 8, 2018
c12f547
Merge remote-tracking branch 'upstream/master' into issue6131
simonjayhawkins Sep 8, 2018
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58 changes: 58 additions & 0 deletions pandas/tests/io/formats/test_to_html.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1844,6 +1844,64 @@ def test_to_html_no_index_max_rows(self):
</table>""")
assert result == expected

def test_to_html_pivot_table_max_cols(self):
# GH https://github.com/pandas-dev/pandas/issues/6131
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Minor nit but don't need full link - can just do # GH 6131

df = DataFrame([
{'a': 'aa', 'b': 'ba', 'c': 'ca', 'd': 1},
{'a': 'ab', 'b': 'bb', 'c': 'cc', 'd': 2},
{'a': 'ac', 'b': 'bc', 'c': 'cc', 'd': 3}
])
result = df.pivot_table(
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Rather than creating df and then pivoting can you simplify and just create the desired frame (i.e. the result of the pivot)?

columns=['a'], index=['b', 'c']).to_html(max_cols=2)
expected = dedent("""\
<table border="1" class="dataframe">
<thead>
<tr>
<th></th>
<th></th>
<th colspan="3" halign="left">d</th>
</tr>
<tr>
<th></th>
<th>a</th>
<th>aa</th>
<th>...</th>
<th>ac</th>
</tr>
<tr>
<th>b</th>
<th>c</th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<th>ba</th>
<th>ca</th>
<td>1.0</td>
<td>...</td>
<td>NaN</td>
</tr>
<tr>
<th>bb</th>
<th>cc</th>
<td>NaN</td>
<td>...</td>
<td>NaN</td>
</tr>
<tr>
<th>bc</th>
<th>cc</th>
<td>NaN</td>
<td>...</td>
<td>3.0</td>
</tr>
</tbody>
</table>""")
assert result == expected

def test_to_html_notebook_has_style(self):
df = pd.DataFrame({"A": [1, 2, 3]})
result = df.to_html(notebook=True)
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