Task 4- Aquarium (Topics: classes/objects, flow-control, string formatting, multi-file, collections This task simulates a text-based aquarium with five random "sea creatures" that move back and forth on the screen. This task uses the class defined in the utilities.py file named Sealife. The class has already defined several class variables that are useful to perform this task. You need to complete the class definition as follows: Sealife class Class data (already defined for you). category = ["fish1", "fish2", "jelly", "crab"] draw = { "fish1":["><>", "<><"], "fish2":[">()", "()<"], "jelly":["~>)", "(<~"], "crab":["^_^", "^_^"] } # categories of sea life # characters used for each category # and for the two directions e or 1 speed_range = {"fish1":(5,10), "fish2":(1,10), "jelly":(1,5), "crab":(10,20)} # speed ranges Instance data (4) cat a string that records what category an object is: fish1, fish2, jelly, or crab direction an integer that is 0 or 1 to indicate the direction the object is moving -- see move() and getStr() a float that represents the sea life's current position a float between (0.1- 2.0] depending on the category that is the object's speed -- see_init_() pos speed Methods (3) _init_(params: direction, pos) - assert if direction isn't 1 or 0 with error message "direction must be 0 or 1". - assert if pos isn't greater than 0 and less than 39 with error message "pos must be between 1 and 38". - set instance variables direction and pos to the parameters direction and pos. two parameters for the starting direction and position. - randomly set instance variables cat to be "fish1", "fish2", "jelly", or "crab". - Depending on the category, look up the speed range in the class variable speed_range and set instance variable speed to a random int between the speed range for the object's category and divide by 10. For example, if the category for this object is "crab", look up the speed range in the speed_range class dictionary. The speed range for crab is (10, 20), so set speed to a random int between 10 and 20 and then divide by 10 (so a crab's speed is between 1.0 and 2.0). If the category is "jelly", set speed to random int between 1 and 5 and divide by 10 (so a jelly's speed is between 0.1 and 0.5). move() - if the direction is 0, set pos equal to pos + speed (i.e, moving from left to right) - if the direction is 1, set pos equal to pos - speed (i.e., moving from right to left) - if the pos is greater than 40, set direction to 1 (i.e., reverse direction) - if the pos is less than 1, set direction to 0 (i.e., reverse direction) no parameters; no return getStr() - this method returns a string that depicts the sea life moving in the aquarium. The string depends on the object's category and direction. The characters that you should draw are in the class dictionary variable draw. no parameters; returns a string -- see details below - Example #1, if the object's category is "fish1" and direction is 0, then draw "><>" for the sea life. - Example #2, if the object's category is "jelly" and the direction is 1, then draw "(<~" for the sea life. - See the diagram below on how to format the string. For this example, assume the object's instance variables are as follows: int(pos) is 18 (recall, pos is a float, so int() is converting it to an integer) cat is "jelly", direction is 1 Return a string as follows: +"(<~"+', ;+'jelly' pos (18) spaces (42-pos) spaces cat category characters for direction 1