Python Regex "object has no attribute"

Question

I've been putting together a list of pages that we need to update with new content (we're switching media formats). In the process I'm cataloging pages that correctly have the new content. Here's the general idea of what I'm doing: - Iterate through a file structure and get a list of files - For each file read to a buffer and, using regex search, match a specific tag - If matched, test 2 more regex matches - write the resulting matches (one or the other) into a database Everything works fine up until the 3rd regex pattern match, where I get the following: `'NoneType' object has no attribute 'group'` ``` # only interested in embeded content pattern = "(

)" # matches content pointing to our old root pattern2 = 'data="(http://.*?/media/.*?")' # matches content pointing to our new root pattern3 = 'data="(http://.*?/content/.*?")' matches = re.findall(pattern, filebuffer) for match in matches: if len(match) > 0: urla = re.search(pattern2, match) if urla.group(1) is not Non…

Accepted Answer

Your exception means that urla has a value of None. Since urla's value is determined by the re.search call, it follows that re.search returns None. And this happens when the string doesn't match the pattern.

So basically you should use:

```
urla = re.search(pattern2, match)
if urla is not None:
    print filename, urla.group(1)
```

instead of what you have now.

Python Regex "object has no attribute"

Solution

Problem