I’m working on a programming practice test / quiz and need an explanation to help me understand better.
Question 1 (10 points)
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Which of the following is the correct sequence of statements to output whether the first letter of the string ‘first’ is an f?
Question 1 options:
ordinal = ‘first’
print(ordinal.checkfirst(‘f’))
ordinal = ‘first’
print(ordinal.startswithf())
ordinal = ‘first’
print(ordinal.startswith(‘f’))
ordinal = ‘first’
print(ordinal(‘f’).check())
Question 2 (10 points)
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What would be output by the following statements?
word = ‘welcome’
print(word[1:1])
Question 2 options:
w
we
No output
e
Question 3 (10 points)
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Which of the following would be output by this code?
word = ‘string’
print(word[6])
Question 3 options:
g
It would generate an IndexError
t
s
Question 4 (10 points)
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Which of the following conditions checks whether the string ‘middle’ alphabetically follows ‘beginning’ and precedes ‘ending’?
Question 4 options:
‘beginning’ != ‘middle’ and ‘middle’ == ‘ending’
‘beginning’ < ‘middle’ < ‘ending’
‘beginning’ < ‘middle’ or ‘middle’ < ‘ending’
‘middle’ < ‘beginning’ and ‘ending’ < ‘middle’
Question 5 (10 points)
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Which of the following is the correct program to count the number of occurrences of the letter r in the string ‘carrot’?
Question 5 options:
vegetable = ‘carrot’
count = 0
for letter in vegetable:
if letter == ‘r’:
count = count + 1
print(count)
vegetable = ‘carrot’
count = 0
for letter in vegetable:
if vegetable[i] == ‘r’:
count = count + 1
print(count)
vegetable = ‘carrot’
count = 0
for ‘r’ in vegetable:
count = count + 1
print(count)
vegetable = ‘carrot’
count = 0
for letter r in vegetable:
if r == ‘r’:
count = count + 1
print(count)
Question 6 (10 points)
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Assuming the variable animal initially contains the string ‘mouse’, which of the following is the correct way to change animal to become ‘moose’?
Question 6 options:
animal = animal[:2] + ‘o’ + animal[3:]
animal[2] = ‘m’
animal[3] = ‘m’
animal = animal[3:] + ‘o’ + animal[:2]
Question 7 (10 points)
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What would be output by the following statements?
fruit = ‘apple’
print(‘pl’ in fruit, ‘pa’ in fruit)
Question 7 options:
False False
True True
True False
False True
Question 8 (10 points)
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Which of the following will be output by the following code?
word = ‘more’
index = 0
while index > len(word):
print(word[index])
index = index + 1
Question 8 options:
m
o
r
e
m
o
r
It would generate an IndexError
No output
Question 9 (10 points)
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Which of the following will be output by this program?
word = ‘ladder’
count = 0
for letter in word:
if letter == ‘d’:
count = count + 1
print(count)
Question 9 options:
5
6
2
4
Question 10 (10 points)
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What would be output by the following statements?
word = ‘mississippi’
print(word.find(‘iss’), word.find(‘iss’, 2))
Question 10 options:
2 5
2 2
1 1
1 4
