binary search in python

code/binary_search.py

@@ -0,0 +1,19 @@
+def binary(a, tv):
+    minimum = 0
+    maximum = len(a) - 1
+    while minimum < maximum:
+        guess = round((minimum + maximum)/2)
+        if a[guess] == tv:
+            return guess
+        elif a[guess] < tv:
+            minimum = guess + 1
+        else:
+            maximum = guess - 1
+    return -1
+
+
+arr = []
+
+ind = binary(arr, 4)
+print("index:")
+print(ind)