added binary search in python under Array folder

Problems/Arrays/search-binary.py

@@ -0,0 +1,23 @@
+#author: seema kumari patel
+#implementation of binary search algorithm in python
+
+def binary_search(arr, target):
+    left, right = 0, len(arr) - 1
+
+    while left <= right:
+        mid = left + (right - left) // 2
+
+        # Check if target is present at mid
+        if arr[mid] == target:
+            return mid
+        # If target is greater, ignore left half
+        elif arr[mid] < target:
+            left = mid + 1
+        # If target is smaller, ignore right half
+        else:
+            right = mid - 1
+
+    # Target was not found in the array
+    return -1
+
+binary_search([1, 2, 3, 4, 5, 6, 7, 8, 9], 5)