Prettytable 0.7.2 does not handle rowspan correctly

[GoogleCodeExporter]

The following table which is valid HTML is not parsed correctly by prettytable:

<table border=1>
<tr>
<th rowspan="2"></th>
<th colspan="2">A</th>
<th>B</th>
</tr>
<tr>
<th>0</th>
<th>1</th>
<th>0</th>
</tr>
<tr>
<td>(0, 0)</td>
<td>1</td>
<td>2</td>
<td>20</td>
</tr>
<tr>
<td>(0, 1)</td>
<td>3</td>
<td>4</td>
<td>40</td>
</tr>
<tr>
<td>(1, 0)</td>
<td>10</td>
<td>20</td>
<td>100</td>
</tr>
</table>

The stack trace of from_html() is:

/usr/lib/python2.7/site-packages/prettytable.pyc in from_html(html_code, 
**kwargs)
   1435
   1436     parser = TableHandler(**kwargs)
-> 1437     parser.feed(html_code)
   1438     return parser.tables
   1439

/usr/lib64/python2.7/HTMLParser.pyc in feed(self, data)
    112         """
    113         self.rawdata = self.rawdata + data
--> 114         self.goahead(0)
    115
    116     def close(self):

/usr/lib64/python2.7/HTMLParser.pyc in goahead(self, end)
    158                     k = self.parse_starttag(i)
    159                 elif startswith("</", i):
--> 160                     k = self.parse_endtag(i)
    161                 elif startswith("<!--", i):
    162                     k = self.parse_comment(i)

/usr/lib64/python2.7/HTMLParser.pyc in parse_endtag(self, i)
    396                 return gtpos
    397
--> 398         self.handle_endtag(elem)
    399         self.clear_cdata_mode()
    400         return gtpos

/usr/lib/python2.7/site-packages/prettytable.pyc in handle_endtag(self, tag)
   1391             self.is_last_row_header = False
   1392         if tag == "table":
-> 1393             table = self.generate_table(self.rows)
   1394             self.tables.append(table)
   1395             self.rows = []

/usr/lib/python2.7/site-packages/prettytable.pyc in generate_table(self, rows)
   1416                 table.field_names = row[0]
   1417             else:
-> 1418                 table.add_row(row[0])
   1419         return table
   1420

/usr/lib/python2.7/site-packages/prettytable.pyc in add_row(self, row)
    816
    817         if self._field_names and len(row) != len(self._field_names):
--> 818             raise Exception("Row has incorrect number of values, 
(actual) %d!=%d (expected)" %(len(row),len(self._field_names)))
    819         if not self._field_names:
    820             self.field_names = [("Field %d" % (n+1)) for n in range(0,len(row))]

Exception: Row has incorrect number of values, (actual) 4!=3 (expected)

Original issue reported on code.google.com by roman.we...@gmail.com on 29 Jan 2015 at 4:00