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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

Section: Chapter Questions

Problem 1PE

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The output should match with the provided test cases below. converter_gen takes a generator object scores (which is iterable) and converts all the randomly generated scores between 0 and 100 to corresponding letter grades as follows: · [0-59) --> 'F' . (60-69] --> 'D 70-79 --> C [80-89) --> 'B [90-100] --> 'A' converter_gen function would cover scores between 0 and 100 only. It assumes that the scores in the input argument scores are between 0 and 100 (no validation is required). Both generator functions should use yiled to return the generated scores/grades. NOTE: . Your generator functions must return the scores/grades using yield statement and should match with the provided output: to be considered as a generator function. • The memory location and random numbers, of course, would be different in each execution

Write a pipeline of two generator functions random_gen and converter_gen as specified below:
random gen takes two int numbers m andn as arguments (no validation is required) and generates m random integer
numbers between 0 and n inclusive [0, n].
You may use random.randint() function to get random integers.
Each time a random score is generated, it should be printed with the following message: "Next random score is:"
followed by the yielded random score. The output should match with the provided test cases below.
converter_gen takes a generator object scores (which is iterable) and converts all the randomly generated scores
between 0 and 100 to corresponding letter grades as follows:
• [0-59] --> 'F'
• [60-69] --> 'D'
[70-79] --> 'C'
[80-89] --> 'B'
[90-100] --> 'A'
converter gen function would cover scores between 0 and 100 only. It assumes that the scores in the input
argument scores are between 0 and 100 (no validation is required).
Both generator functions should use yiled to return the generated scores/grades.
NOTE:
Your generator functions must return the scores/grades using yield statement and should match with the provided
output:
<generator object converter_gen at ...>
to be considered as a generator function.
The memory location and random numbers, of course, would be different in each execution.
• Non-generator solutions and solutions that do not match with the format of the output of the provided test cases will get
ZERO points.
In [480]: import random
def random_gen (m, n) :
...
generatesm random integer numbers between 0 and n
def converter_gen(scores):
''' converts the numeric scores to letter grades
...
In [434]: random_grades =
converter_gen (random_gen ( 3, 100))
In [435]: print (random_grades)
print (list (random_grades))
<generator object converter_gen at 0x7fdbde3d7f20>
Next random score is: 77
Next random score is: 98
Next random score is: 11
['C', 'A', 'F']
In [495]: random_grades = converter_gen (random_gen (5, 100))
In [496]: print (random_grades)
print (list (random_grades))
<generator object converter gen at 0x7fdbdde19350>
Next random score is: 80
Next random score is: 58
Next random score is: 35
Next random score is: 83
Next random score is: 94
['"В', 'F', "F', 'B', 'А']

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