Question

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

Update

After changing the regex to

pattern_strings = ['\\xc2d', '\\xa0', '\\xe7', '\\xc3\\ufffdd', '\\xc2\\xa0', '\\xc3\\xa7', '\\xa0\\xa0', '\\xc2', '\\xe9']

It is still the same, no output

UPDATE

after making regex to

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)

Things started to work, but partially, the patterns still not caught are for line

\xc2\xa0 
\xc3\xa7 
\xa0\xa0 

for which my pattern string is ['\\xc2\\xa0', '\\xc3\\xa7', '\\xa0\\xa0']

Answer 1

escape the \ in the search patterns
either with r"\xa0" or as "\\xa0"

do this ….

 ['\\xc2d', '\\xa0', '\\xe7', '\\xc3\\ufffdd', '\\xc2\\xa0', '\\xc3\\xa7', '\\xa0\\xa0', '\\xc2', '\\xe9']

like everyones been saying to do except the one guy you listened too…