refactoring: added new line

src/main/py/read_math_function.py

@@ -53,6 +53,7 @@ def simplify_easy_math_function(type, function):
     if is_string(function) == False or is_allowed_string("c", function) == True:
         return simplify_constant("c", function)
 
+
 def extract_constant(function):
     coefficient, constant = function.split('x', 1) if 'x' in function else (function, '')
     constant = constant.lstrip('+')