How to combine multiple regex into single one in python?

Question

I\'m learning about regular expression. I don\'t know how to combine different regular expression to make a single generic regular expression.

I want to write a sing

Answer 1

To findall with an arbitrary series of REs all you have to do is concatenate the list of matches which each returns:

re_list = [
    '\d+\.\d*[L][-]\d*\s[A-Z]*[/]\d*', # re1 in question,
    ...
    '\d+[/]\d+[A-Z]*\d+\s\d+[A-z]\s[A-Z]*', # re4 in question
]

matches = []
for r in re_list:
   matches += re.findall( r, string)

For efficiency it would be better to use a list of compiled REs.

Alternatively you could join the element RE strings using

generic_re = re.compile( '|'.join( re_list) )