带有OR和空类的BeautifulSoup FindAll

Question

I am trying to extract the following:

<td class="indent">Interest Income on Fed. Funds</td>
<td class="">-</td>

with this

interest=a.findAll("td",{'class':[''|'indent']},limit=6)

However, it returns

TypeError: unsupported operand type(s) for |: 'str' and 'str'

How could I find empty class OR class_='indent'?

Answer 1

Try this:

interest = a.findAll("td", {'class': [None, 'indent']}, limit=6)

1. Pass multiple classes as a list (with , separator not with | )
2. Select empty classes with None

Answer 2

Another option as well for bs4:

def empty_or_indent(css_class):
    return css_class is None or css_class is 'indent'   

a.find_all('td', class_=empty_or_indent, limit=6)