two calc.py for combination

sami/learn-python-the-hard-way/calc2.py

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+def add(a,b):
+# calculating the sum
+    sum=a+b
+    #opening the file in an append mode
+    file = open('output.txt',"a")
+    file.write(f'Sum of {a} and {b} is {sum}\n')
+    #at last i close the file
+    file.close()
+
+
+#call the function
+add(5,7)
+add(2,6)