Created
February 4, 2016 16:13
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| def check(before, pattern, after): | |
| import re | |
| if before: | |
| before = '(?<=%s)' % before | |
| else: | |
| before = '' | |
| if after: | |
| after = '(?=%s)' % after | |
| else: | |
| after = '' | |
| regex = re.compile('^((?!%s).|%s%s%s)*$' % (pattern, before, pattern, after)) | |
| return regex |
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