Part 3. arange Method Define a method in simpy named arange. Its purpose is to fill in the values attribute with range of values, like the range built-in fu but in terms of floats. It has three parameters in addition to self, the last being optional: 1. start - a float indicating the first value in the range 2. stop - a float that is not included in the produced range values 3. step - a float whose default value is 1.0 that indicates how to increase (or decrease) each subsequent item in the generated range. Unlike in range function, this can be a fractional, float value. Step cannot be 0.0. Think carefully about what the value of step tells you about how to design your loop(s) for this method. Before any looping, you shou assert step != 0.0 to be sure you avoid an infinite loop with an invalid argument. positive = Simpy([]) positive.arange(1.0, 5.0) print("Actual: ", positive, " - Expected: Simpy([1.0, 2.0, 3.0, 4.0])") fractional = Simpy([]) positive.arange (0.0, 1.0, 0.25) print("Actual: ", positive, " - Expected: Simpy([0.0, 0.25, 0.5, 0.75])") negative = Simpy([]) negative.arange (-1.0, -5.0, -1.0) print("Actual: ', negative, " - Expected: Simpy([-1.0, -2.0, -3.0, -4.0])")

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Part 3. arange Method
Define a method in simpy named arange. Its purpose is to fill in the values attribute with range of values, like the range built-in function,
but in terms of floats. It has three parameters in addition to self, the last being optional:
1. start - a float indicating the first value in the range
2. stop - a float that is not included in the produced range values
3. step - a float whose default value is 1.0 that indicates how to increase (or decrease) each subsequent item in the generated range. Unlike the built-
in range function, this can be a fractional, float value. Step cannot be 0.0.
Think carefully about what the value of step tells you about how to design your loop(s) for this method. Before any looping, you should
assert step != 0.0 to be sure you avoid an infinite loop with an invalid argument.
positive = Simpy([])
positive.arange(1.0, 5.0)
print("Actual: ", positive, " - Expected: Simpy([1.0, 2.0, 3.0, 4.0])")
fractional = Simpy([])
positive.arange (0.0, 1.0, 0.25)
print("Actual: ", positive, " - Expected: Simpy([0.0, 0.25, 0.5, 0.75])")
negative = Simpy([])
negative.arange(-1.0, -5.0, -1.0)
print("Actual:
', negative, "
- Expected: Simpy([-1.0, -2.0, -3.0, -4.0])")
Python
Transcribed Image Text:Part 3. arange Method Define a method in simpy named arange. Its purpose is to fill in the values attribute with range of values, like the range built-in function, but in terms of floats. It has three parameters in addition to self, the last being optional: 1. start - a float indicating the first value in the range 2. stop - a float that is not included in the produced range values 3. step - a float whose default value is 1.0 that indicates how to increase (or decrease) each subsequent item in the generated range. Unlike the built- in range function, this can be a fractional, float value. Step cannot be 0.0. Think carefully about what the value of step tells you about how to design your loop(s) for this method. Before any looping, you should assert step != 0.0 to be sure you avoid an infinite loop with an invalid argument. positive = Simpy([]) positive.arange(1.0, 5.0) print("Actual: ", positive, " - Expected: Simpy([1.0, 2.0, 3.0, 4.0])") fractional = Simpy([]) positive.arange (0.0, 1.0, 0.25) print("Actual: ", positive, " - Expected: Simpy([0.0, 0.25, 0.5, 0.75])") negative = Simpy([]) negative.arange(-1.0, -5.0, -1.0) print("Actual: ', negative, " - Expected: Simpy([-1.0, -2.0, -3.0, -4.0])") Python
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