Feyo wrote:
I'm trying to figure out how to write efficiently write a regex for
domain names with a particular top level domain. Let's say, I want to
grab all domain names with country codes .us, .au, and .de.
I could create three different regexs that would work:
regex = re.compile(r'[\w\-\.]+\.us)
regex = re.compile(r'[\w\-\.]+\.au)
regex = re.compile(r'[\w\-\.]+\.de)
How would I write one to accommodate all three, or, better yet, to
accommodate a list of them that I can pass into a method call? Thanks!
>
regex = re.compile(r'[\w\-\.]+\.(?:us|au|de)')
If you have a list of country codes ["us", "au", "de"] then you can
build the regular expression from it:
regex = re.compile(r'[\w\-\.]+\.(?:%s)' % '|'.join(domains))
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