Update newton_method.py

Author: cclauss

Diff for: arithmetic_analysis/newton_method.py

@@ -27,15 +27,12 @@ def newton(function: RealFunc, derivative: RealFunc, starting_int: int,) -> floa
     ...
     ZeroDivisionError: Could not find root
     """
-    prev_guess: float = starting_int
+    prev_guess float(starting_int)
     while True:
         try:
-            next_guess: float = prev_guess - function(prev_guess) / derivative(
-                prev_guess
-            )
+            next_guess = prev_guess - function(prev_guess) / derivative(prev_guess)
         except ZeroDivisionError:
             raise ZeroDivisionError("Could not find root")
-
         if abs(prev_guess - next_guess) < 10 ** -5:
             return next_guess
         prev_guess = next_guess