Regular expression for simple math expressions

Question

As an exercise I was trying to come up with a regex to evaluate simple algebra like

q = \'23 * 345 - 123+65\'

From here I want to get \'23\', \

Answer 1

Simply try this.

import re
q = '23 * 345 - 123+65'
regexparse = r'(\d+)|[-+*/]'
for i in re.finditer(regexparse, q):
    print i.group(0)

output:

23
*
345
-
123
+
65