
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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USING PYTHON
- You are going to define a class to keep track of a point in space, it’s description and provide it the capability to figure out it’s distance from another point. You may be able to re-use some of the code from your previous work.
- In your
program define a class called GeoPoint that will have the following:- An init (self) method that will set two attributes (variables) called self.lat, self.lon for the location of that point. The init method will also initialize a description attribute (variable) that will start off as the empty string “”.
- A SetPoint(self, lat, lon) method that will set the values of self.lat, self.lon
- A GetPoint(self) method that will return a tuple or list with self.lat, self.lon.
- A Distance(self, lat, lon) method that will figure out the distance between the object’s self.lat, self.lon and lat, lon parameters passed in.
- A SetDescription(self, description) method that will set the objects self.description attribute (variable).
- A GetDescription(self) method that will return the objects self.description attribute.
- In the main part of your program do the following:
- Instantiate two points
- Use the SetPoint and SetDescription methods to set each of the points locations and descriptions. Make sure they have different coordinates and different descriptions.
- Inside a “Do another (y/n)?” loop do the following:
- Ask the user for their location. You can ask for coordinates in three inputs or ask them for their coordinates in one input with each element separated by a coma.
- Use point1 and point2’s Distance method to find the distance from each point to the user’s location
distanceToOne = point1.Distance(lat, lon)
distanceToTwo = point2.Distance(lat, lon)
- Tell the user which point they are closest to in this format:
You are closest to <description> which is located at <point’s coordinates>
- Ask “Do another (y/n)?” and loop if they respond with ‘y’
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