Added a simple calculator python script

Author: YT116

basic_cal.py

@@ -0,0 +1,8 @@
+while True:
+    try:
+        print(eval(input("enter digits with operator (e.g. 5+5)\n")))
+    except:
+        print("Invalid Input, try again..")
+
+#  Simple Calculator using eval() in Python
+# This calculator takes user input like "5+5" or "10/2" and shows the result.