Define a List of Points

1. Design a class MyPoint, whose attributes include:
   • x, y: The coordinates on the Eclidean plane
   • distance(): The distance to the origin (0,0)
2. Ask the user to supply a filename, which stores the coordinates of a few points. For example, (1, 2), (2, 7), (3, 4), (12, 5), (6, 8) may be stored as

   
   1 2
   2 7
   3 4
   12 5
   6 8
   
   

3. Create a list to store these points.
4. Print out the items in this list as follows.

   
   (1,2) 2.23606797749979
   (2,7) 7.280109889280518
   (3,4) 5.0
   (12,5) 13.0
   (6,8) 10.0
   
   

5. Note: You have to define the __str__() function in the class, which will convert an object into a string (see P.360). Otherwise, when you try to print out an object, you will get an output like <__main__.MyPoint object at 0x801b6ffd0>.
6. You may test your class definition with the following main() function:

   
   def main():
       filename = input("Enter the name of the data file: ")
       myPoints = readPoints(filename)
       for p in myPoints:
   	print( p, p.distance() )