Removed . from operators, remade line 17

calc.py

@@ -14,9 +14,7 @@ def calc(text):
     expression = ""
     should_calc = False
     for char in text:
-        if char.isdigit() or (should_calc and char in [".", " "]):
-            expression += char
-        elif expression and char == ".":
+        if char.isdigit() or (expression and char == ".") or (should_calc and char == " "):
             expression += char
         elif char in math_operators:
             # calculation must include at least 1 operator