The following sample file called grades.txt contains grades for several students in an imaginary class. Each line of this file stores a student's name followed by their exam scores. The number of scores might be different for each student. abdul 10 15 20 30 40 erica 23 16 19 22 haroon 8 22 17 14 32 17 24 21 2 9 11 17 omar 12 28 21 45 26 10 chengjie 14 32 25 16 89 alex 15 22 11 35 36 7 9 bryan 34 56 11 29 6 laxman 24 23 9 45 27 Now, consider the following code. f = open("grades.txt", "r") for aline in f: items = aline.split() # choose your option for this part f.close() 1. Which option prints out the names of students that have more than six scores stored in grades.txt? a. if len(items[1:]) == 6: print(items[0]) b. if len(items[:]) > 6: print(items[0]) c. if len(items[1:]) > 6: print(items[0]) 2. Which option prints out only the names of each student in stored in grades.txt? a. print(items[0][0]) b. print(items[0]) c. print(items[0:]) 3. Which option prints out the last score of each student from grades.txt? a. print(items[len(items) - 1]) b. print(items[0 : -1]) c. print(items[len(items) : - 1])
The following sample file called grades.txt contains grades for several students in an imaginary class. Each line of this file stores a student's name followed by their exam scores. The number of scores might be different for each student. abdul 10 15 20 30 40 erica 23 16 19 22 haroon 8 22 17 14 32 17 24 21 2 9 11 17 omar 12 28 21 45 26 10 chengjie 14 32 25 16 89 alex 15 22 11 35 36 7 9 bryan 34 56 11 29 6 laxman 24 23 9 45 27 Now, consider the following code. f = open("grades.txt", "r") for aline in f: items = aline.split() # choose your option for this part f.close() 1. Which option prints out the names of students that have more than six scores stored in grades.txt? a. if len(items[1:]) == 6: print(items[0]) b. if len(items[:]) > 6: print(items[0]) c. if len(items[1:]) > 6: print(items[0]) 2. Which option prints out only the names of each student in stored in grades.txt? a. print(items[0][0]) b. print(items[0]) c. print(items[0:]) 3. Which option prints out the last score of each student from grades.txt? a. print(items[len(items) - 1]) b. print(items[0 : -1]) c. print(items[len(items) : - 1])
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
Related questions
Question
The following sample file called grades.txt contains grades for several students in an imaginary class. Each line of this file stores a student's name followed by their exam scores. The number of scores might be different for each student.
abdul 10 15 20 30 40
erica 23 16 19 22
haroon 8 22 17 14 32 17 24 21 2 9 11 17
omar 12 28 21 45 26 10
chengjie 14 32 25 16 89
alex 15 22 11 35 36 7 9
bryan 34 56 11 29 6
laxman 24 23 9 45 27
Now, consider the following code.
f = open("grades.txt", "r")
for aline in f:
items = aline.split()
# choose your option for this part
f.close()
1. Which option prints out the names of students that have more than six scores stored in grades.txt?
|
a.
|
if len(items[1:]) == 6:
print(items[0])
|
|
b.
|
if len(items[:]) > 6:
print(items[0])
|
|
c.
|
if len(items[1:]) > 6:
print(items[0])
|
2. Which option prints out only the names of each student in stored in grades.txt?
|
a.
|
print(items[0][0]) |
|
b.
|
print(items[0])
|
|
c.
|
print(items[0:]) |
3. Which option prints out the last score of each student from grades.txt?
|
a.
|
print(items[len(items) - 1])
|
|
b.
|
print(items[0 : -1]) |
|
c.
|
print(items[len(items) : - 1]) |
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