Python Assignment: Analyzing Code Output and Describing Actions

This assignment assesses the understanding of fundamental Python concepts through a series of code snippets. Students are required to analyze each code block, predict the output, and describe the actions being executed. The exercises cover various aspects of Python programming, including list and string operations, data structures, string slicing, and the use of the `itertools` library for combinations. The student needs to demonstrate their ability to interpret code, understand the impact of different Python commands, and explain the behavior of the code in a clear and concise manner. This assignment is designed to reinforce the basics of Python and prepare students for more complex programming tasks. The provided solution showcases the expected format for selecting the correct output and describing the action performed by each code block. Desklib provides past papers and solved assignments for students.

Select the appropriate output after running the following code block:
aStr="Hello"
print(aStr)
Group of answer choices
"Hello"
<str>
Hello
aStr
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Question 21 pts
Describe the action being executed by the former code block:
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Strings are considered which are inside “ “ and ‘ ‘. Thus option c is correct
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Question 31 pts
Select the appropriate output after running the following code block:
aStr2='Hello'
print(aStr2)
Group of answer choices
aStr2
'Hello'
None of these
"Hello"

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Question 41 pts
Describe the action being executed by the former code block:
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Value of aStr2 will print without quotes, ‘str’ type
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Question 51 pts
Select the appropriate output after running the following code block:
aStr="This is a String."
print("The length of this string -or the number of characters: ", len(aStr))
Group of answer choices
The length of this string -or the number of characters: 17
"The length of this string -or the number of characters: ", len(aStr)
The length of this string -or the number of characters: len(aStr)
The length of this string -or the number of characters: 16
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Question 61 pts
Describe the action being executed by the former code block:
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The length of the string is 17 including spaces and ‘.’
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Question 71 pts
Select the appropriate output after running the following code block:
aStr="This is a String."

print(aStr[16])
Group of answer choices
.
aStr[16]
g
This is a String.
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Question 81 pts
Describe the action being executed by the former code block:
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since a[16]=’.’,thus ‘.’ will be printed
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Question 91 pts
Select the appropriate output after running the following code block:
aStr="This is a String."
print(aStr[17])
Group of answer choices
IndexError: string index out of range
.
This is a String.
aStr[17]
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Question 101 pts
Describe the action being executed by the former code block:

HTML EditorKeyboard Shortcuts
As because there is no index 17 in the string.
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Question 111 pts
Select the appropriate output after running the following code block:
my_string= """Hello.Welcome to
Python World!"""
print(my_string)
Group of answer choices
"""Hello.Welcome to Python World!"""
None of these
my_string
Hello.Welcome to Python World!
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Question 121 pts
Describe the action being executed by the former code block:
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Python will interpret as string, so will be printed without quotes.
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Question 131 pts
Select the appropriate output after running the following code block:
aList=["This","is","a","string"]
print("This is a list: ", aList)

Group of answer choices
This is a string
This is a list: This is a string
This is a list: ['This', 'is', 'a', 'string']
This is a list: [This is a string]
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Question 141 pts
Describe the action being executed by the former code block:
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since aList is list and each element is of type ‘str’
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Question 151 pts
Select the appropriate output after running the following code block:
aList=["This","is","a","string"]
aString = " ".join(aList)
# aString is a string:"This is a string"
print(aString)
Group of answer choices
This is a list: This is a string
This is a list: ['This', 'is', 'a', 'string']
This is a string
This is a list: [This is a string]

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Question 161 pts
Describe the action being executed by the former code block:
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Since all the list elements are appended with “ ” using join keyword.
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Question 171 pts
Select the appropriate output after running the following code block:
aList = [20,30,40,50,60]
aStrList = [str(element) for element in aList]
print("This is a list of strings: ",aStrList)
Group of answer choices
This is a list of strings: ['20', '30', '40', '50', '60']
None of these
This is a string: 20 30 40 50 60
This is a list of strings: [20, 30, 40, 50, 60]
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Question 181 pts
Describe the action being executed by the former code block:
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Using list comprehension, each element is type casted to type ‘str’
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Question 191 pts

aList = [20,30,40,50,60]
aStrList = [str(element) for element in aList]
aString=" ".join(aStrList)
print("This is a string: ",aString)
Group of answer choices
This is a string: [20 30 40 50 60]
This is a string: [20, 30, 40, 50, 60]
This is a string: 20 30 40 50 60
This is a list of strings: ['20', '30', '40', '50', '60']
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Question 201 pts
Describe the action being executed by the former code block:
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type casted to str and joined with “ ” using join. astring is ‘str’ type.
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Question 211 pts
Select the appropriate output after running the following code block:
aList = [20,30,40,50,60]
# Convert aList into a list of strings-Using the constructor str()
aStrList = [str(element) for element in aList]

# Using join() to create a new string
aString=" ".join(aStrList)
print("This is a string: ",aString)
Group of answer choices
This is a string: [20, 30, 40, 50, 60]
This is a list of strings: ['20', '30', '40', '50', '60']
This is a string: [20 30 40 50 60]
This is a string: 20 30 40 50 60
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Question 221 pts
Describe the action being executed by the former code block:
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type casted to str and joined with “ ” using join. astring is ‘str’ type.
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Question 231 pts
Select the appropriate output after running the following code block:
from itertools import combinations
L=[1,2,3,4]
print(combinations(L,3))
[",".join(map(str,comb)) for comb in combinations(L,3)]
Group of answer choices
[1,2,3,1,2,4,1,3,4,2,3,4]
['1,2,3', '1,2,4', '1,3,4', '2,3,4']

[1,2,3,4]
1,2,3,1,2,4,1,3,4,2,3,4
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Question 241 pts
Describe the action being executed by the former code block:
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combinations () generates combinations of elements with r=3 elements each here.
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Question 251 pts
Select the appropriate output after running the following code block:
str='programiz'
print('str= ', str)
Group of answer choices
str= programiz
('str= ', str)
programiz
'programiz'
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Question 261 pts
Describe the action being executed by the former code block:
HTML EditorKeyboard Shortcuts
since str is string will print without quotes.
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Question 271 pts
Select the appropriate output after running the following code block:

str='programiz'
print('str[0]',str[0])
Group of answer choices
str[0] p
str[0] 0
str[0] r
str[0] str[0]
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Question 281 pts
Describe the action being executed by the former code block:
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since str[0] = p, str[0] p will be printed.
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Question 291 pts
Select the appropriate output after running the following code block:
str='programiz'
print('str[-1]',str[-1])
Group of answer choices
str[-1] programiz
str[-1] p
str[-1] ''
str[-1] z

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Question 301 pts
Describe the action being executed by the former code block:
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since str[-1] means str[len(str)-1].
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Question 311 pts
Select the appropriate output after running the following code block:
str='programiz'
print('str[1:5]= ', str[1:5])
Group of answer choices
'str[1:5]= ', str[1:5]
str[1:5]= prog
str[1:5]= rogr
str[1:5]= [1:5]
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Question 321 pts
Describe the action being executed by the former code block:
HTML EditorKeyboard Shortcuts
str[1:5] means str[1] to str[4], s[5] is exclusive, this is called string slicing.
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Question 331 pts
Select the appropriate output after running the following code block:

sample_str='Python String'
print(sample_str[3:5])
Group of answer choices
ho
thon
th
hon S
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Question 341 pts
Describe the action being executed by the former code block:
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str[3] to str[4] = ho
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Question 351 pts
Select the appropriate output after running the following code block:
sample_str='Python String'
print(sample_str[7:-4])
Group of answer choices
on S
St
Stri
h