This is a simple regular expression (RegEx) algorithm developed with python.
It supports:
- Literals ( abc )
- Ranges ( [a-z], [A-Z], [0-9], [a-zA-Z0-9] )
- Alternatives ( a|b )
- Matching in the middle of a string
To run a string against the regular expression, create a new object of RegEx with the expression or the pattern as its parameter.
Then by using the match function of the RegEx object pass the string as its parameter and get the result.
from regex import RegEx re = RegEx("[a-z0-9]@[a-z].(com|net|org)") result = re.match("[email protected]") # output: True result = re.match("[email protected]") # output: False result = re.match("Hello99@gmailcom") # output: False
There are some test cases in tests.py file. Use the below code to run the test cases.
python tests.py