ENH: #8750 add Series support for to_html and _repr_html_

Author: lexual

doc/source/api.rst

@@ -729,6 +729,7 @@ Serialization / IO / Conversion
    Series.to_json
    Series.to_sparse
    Series.to_dense
+   Series.to_html
    Series.to_string
    Series.to_clipboard
 

pandas/core/series.py

@@ -952,6 +952,63 @@ def __unicode__(self):
 
         return result
 
+    def _repr_footer(self):
+
+        namestr = u("Name: %s, ") % com.pprint_thing(
+            self.name) if self.name is not None else ""
+
+        # time series
+        if self.is_time_series:
+            if self.index.freq is not None:
+                freqstr = u('Freq: %s, ') % self.index.freqstr
+            else:
+                freqstr = u('')
+
+            return u('%s%sLength: %d') % (freqstr, namestr, len(self))
+
+        # Categorical
+        if com.is_categorical_dtype(self.dtype):
+            level_info = self.values._repr_categories_info()
+            return u('%sLength: %d, dtype: %s\n%s') % (namestr,
+                                                       len(self),
+                                                       str(self.dtype.name),
+                                                       level_info)
+
+        # reg series
+        return u('%sLength: %d, dtype: %s') % (namestr,
+                                               len(self),
+                                               str(self.dtype.name))
+
+    def _repr_html_(self, *args, **kwargs):
+        df = self.to_frame()
+        if self.name is None:
+            df.columns = ['']
+        return df._repr_html_(*args, **kwargs)
+
+    def to_html(self, *args, **kwargs):
+        """
+        Render a Series as an HTML table.
+
+        `to_html`-specific options:
+
+        bold_rows : boolean, default True
+            Make the row labels bold in the output
+        classes : str or list or tuple, default None
+            CSS class(es) to apply to the resulting html table
+        escape : boolean, default True
+            Convert the characters <, >, and & to HTML-safe sequences.=
+        max_rows : int, optional
+            Maximum number of rows to show before truncating. If None, show
+            all.
+        max_cols : int, optional
+            Maximum number of columns to show before truncating. If None, show
+            all.
+        """
+        df = self.to_frame()
+        if self.name is None:
+            df.columns = ['']
+        return df.to_html(*args, **kwargs)
+
     def to_string(self, buf=None, na_rep='NaN', float_format=None, header=True,
                   length=False, dtype=False, name=False, max_rows=None):
         """

pandas/tests/test_format.py

@@ -3574,6 +3574,69 @@ def test_to_string_header(self):
         exp = '0    0\n    ..\n9    9'
         self.assertEqual(res, exp)
 
+    def test_to_html(self):
+        expected_template = '''\
+<table border="1" class="dataframe">
+  <thead>
+    <tr style="text-align: right;">
+      <th></th>
+      <th>{column_name}</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th>0</th>
+      <td>0</td>
+    </tr>
+    <tr>
+      <th>1</th>
+      <td>1</td>
+    </tr>
+  </tbody>
+</table>'''
+        column_representations = {
+            'foo': 'foo',
+            None: '',
+        }
+        for series_name, column_name in column_representations.items():
+            s = pd.Series(range(2), dtype='int64', name=series_name)
+            result = s.to_html()
+            expected = expected_template.format(column_name=column_name)
+            self.assertEqual(result, expected)
+
+    def test_repr_html(self):
+        s = pd.Series(range(5), dtype='int64', name='foo')
+        self.assertTrue(hasattr(s, '_repr_html_'))
+        fmt.set_option('display.max_rows', 2)
+        result = s._repr_html_()
+        expected = u'''\
+<div{div_style}>
+<table border="1" class="dataframe">
+  <thead>
+    <tr style="text-align: right;">
+      <th></th>
+      <th>foo</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th>0</th>
+      <td>0</td>
+    </tr>
+    <tr>
+      <th>...</th>
+      <td>...</td>
+    </tr>
+    <tr>
+      <th>4</th>
+      <td>4</td>
+    </tr>
+  </tbody>
+</table>
+<p>5 rows \xd7 1 columns</p>
+</div>'''.format(div_style=div_style)
+        self.assertEqual(result, expected)
+
 
 class TestEngFormatter(tm.TestCase):
     _multiprocess_can_split_ = True