+
−# round using int
+
−n = 17.3 # any float
+
−int (n + .5)
+
−
+
−# round it off to first decimal place
+
−round(amount * 10) / 10.0
+
−
+
−# round it off to nearest 5 paise
+
−round(amount * 20) / 20.0
+
−
+
−# exchange two variables
+
−a, b = b, a