Combining multiple Regex

Question

im looking to combine multiple regexes using a AND condition. For example, the following words should not be matched (starting of string):

database
audit
index
analysis
extract
good
bad

The strings that start with these strings will not be matched. Similarly, words such as others, error will be matched.

I have done a regex that is able to filter for each word but has not been successful at filtering out the list of words to be not matched.

#This will only match those that do not start with database    
r'(^((?!database).+)'

While trying to combine, it has failed to check both conditions.

r'(^((?!database).+)(^((?!audit).+)))'

Note: This regex is to be used in the django framework, urls.py file

Tim Biegeleisen · Accepted Answer · 2018-01-25 06:56:40Z

1

If you just want to filter out strings which start with words in your negative list, then use a negative lookahead at the start of the pattern with an alternation to cover that list of words:

^(?!database|audit|index|analysis|extract|good|bad).*$

If you wanted to check for positive matches, or wanted a more complex pattern, then you may replace .* with the appropriate logic.

Demo

answered Jan 25, 2018 at 6:56

Tim Biegeleisen

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