python regex: pattern not found
===

I have a pattern compiled as 

    pattern_strings = ['\xc2d', '\xa0', '\xe7', '\xc3\ufffdd', '\xc2\xa0', '\xc3\xa7', '\xa0\xa0', '\xc2', '\xe9']
    join_pattern = '|'.join(pattern_strings)
    pattern = re.compile(join_pattern)

and then I find pattern in file as 

    def find_pattern(path):
    	with open(path, 'r') as f:
    		for line in f:
    			print line
    			found = pattern.search(line)
    			if found:
    				print dir(found)
    				logging.info('found - ' + found)

and my input as `path` file is  

    \xc2d 
    d\xa0 
    \xe7 
    \xc3\ufffdd 
    \xc3\ufffdd 
    \xc2\xa0 
    \xc3\xa7 
    \xa0\xa0 
    '619d813\xa03697' 

When I run this program, nothing happens.

I it not able to catch these patterns, what is am I doing wrong here?

**Desired output**
- each line because each line has one or the other matching pattern