edsu/pymarc — pull request #55 by wearp (2014-04-12 19:04:43+00:00)
Title: has_indicators()

has_indicators() takes two indicators and returns true. The None keyword is used as a wildcard to be any characters.

eg. counting the subjecting headings are Library of Congress (2nd indicator = 0)
```python
for record in reader:
headings = record.get_fields('600', '610', '611', '630', '648', '650')

for h in headings:
answer = h.has_indicators(None, '0')
if answer == True:
true += 1
else:
false += 1
```