Simple 3 line python program to convert user input kilometer to miles
#Accept Distance in Kilometer
#from km to miles need to divide appx 1.609344
km=float(input("\n\t Enter Kilometer to Convert it in miles: "))
#Now converting kilometer to Miles
miles=float((km/1.609344))
print("\n\t %f kilometer in Miles are %f "%(km,miles))
Output
Enter Kilometer to Convert it in miles: 3
3.000000 kilometer in Miles are 1.864114