{"id":180334,"date":"2025-01-05T12:33:30","date_gmt":"2025-01-05T12:33:30","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=180334"},"modified":"2025-01-05T12:33:34","modified_gmt":"2025-01-05T12:33:34","slug":"3-17-lab-list-basics-given-the-user-inputs","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/05\/3-17-lab-list-basics-given-the-user-inputs\/","title":{"rendered":"3.17 LAB: List basics Given the user inputs"},"content":{"rendered":"\n

3.17 LAB: List basics<\/p>\n\n\n\n

Given the user inputs, complete a program that does the following tasks:<\/p>\n\n\n\n

Define a list, my_list, containing the user inputs: my_flower1, my_flower2, and my_flower3 in the same order.
Define a list, your_list, containing the user inputs, your_flower1 and your_flower2, in the same order.
Define a list, our_list, by concatenating my_list and your_list.
Append the user input, their_flower, to the end of our_list.
Replace my_flower2 in our_list with their_flower.
Remove the first occurrence of their_flower from our_list without using index().
Remove the second element of our_list.
Observe the output of each print statement carefully to understand what was done by each task of the program.<\/p>\n\n\n\n

Ex: If the input is:<\/p>\n\n\n\n

rose<\/p>\n\n\n\n

peony<\/p>\n\n\n\n

lily<\/p>\n\n\n\n

rose<\/p>\n\n\n\n

daisy<\/p>\n\n\n\n

aster<\/p>\n\n\n\n

the output is:<\/p>\n\n\n\n

[‘rose’, ‘peony’, ‘lily’, ‘rose’, ‘daisy’]<\/p>\n\n\n\n

[‘rose’, ‘peony’, ‘lily’, ‘rose’, ‘daisy’, ‘aster’]<\/p>\n\n\n\n

[‘rose’, ‘aster’, ‘lily’, ‘rose’, ‘daisy’, ‘aster’]<\/p>\n\n\n\n

[‘rose’, ‘lily’, ‘rose’, ‘daisy’, ‘aster’]<\/p>\n\n\n\n

[‘rose’, ‘rose’, ‘daisy’, ‘aster’]<\/p>\n\n\n\n

\n\n\n\n

here is the code:<\/p>\n\n\n\n

my_flower1 = input()
my_flower2 = input()
my_flower3 = input()
my_list = [my_flower1, my_flower2, my_flower3]
your_flower1 = input()
your_flower2 = input()
your_list = [your_flower1, your_flower2]
their_flower = input()
our_list = my_list + your_list
print(our_list)
our_list.append(their_flower)
print(our_list)
for i in range(len(our_list)):
if our_list[i] == my_flower2:
our_list[i] = their_flower
print(our_list)
for i in range(len(our_list)):
if our_list[i] == their_flower:
del our_list[i]
break
print(our_list)
del our_list[1]
print(our_list )<\/p>\n\n\n\n

the issue with the output:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n

Here’s the corrected code and the explanation:<\/p>\n\n\n\n

Corrected Code:<\/h3>\n\n\n\n
my_flower1 = input()\nmy_flower2 = input()\nmy_flower3 = input()\nmy_list = [my_flower1, my_flower2, my_flower3]\n\nyour_flower1 = input()\nyour_flower2 = input()\nyour_list = [your_flower1, your_flower2]\n\ntheir_flower = input()\nour_list = my_list + your_list\nprint(our_list)  # Task 1\n\nour_list.append(their_flower)\nprint(our_list)  # Task 2\n\nfor i in range(len(our_list)):\n    if our_list[i] == my_flower2:\n        our_list[i] = their_flower\n        break  # Replace the first occurrence only\nprint(our_list)  # Task 3\n\nfor i in range(len(our_list)):\n    if our_list[i] == their_flower:\n        del our_list[i]\n        break  # Remove the first occurrence\nprint(our_list)  # Task 4\n\ndel our_list[1]\nprint(our_list)  # Task 5\n<\/code><\/pre>\n\n\n\n
\n\n\n\n
Explanation:<\/h3>\n\n\n\n
    \n
  1. Input Values and Initial List Creation<\/strong>:\n
      \n
    • Inputs are assigned to variables like my_flower1<\/code>, my_flower2<\/code>, etc.<\/li>\n\n\n\n
    • my_list<\/code> contains the three flowers from my_flower1<\/code>, my_flower2<\/code>, and my_flower3<\/code>.<\/li>\n\n\n\n
    • your_list<\/code> contains two flowers from your_flower1<\/code> and your_flower2<\/code>.<\/li>\n\n\n\n
    • our_list<\/code> combines my_list<\/code> and your_list<\/code> using the +<\/code> operator.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Task 1: Print Combined List<\/strong>:\n
        \n
      • Concatenation results in a list of all flowers from my_list<\/code> and your_list<\/code>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Task 2: Append Flower<\/strong>:\n
          \n
        • their_flower<\/code> is appended to the end of our_list<\/code>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • Task 3: Replace my_flower2<\/code> with their_flower<\/code><\/strong>:\n
            \n
          • The loop iterates over our_list<\/code> to find the first occurrence of my_flower2<\/code> and replaces it with their_flower<\/code>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • Task 4: Remove First Occurrence of their_flower<\/code><\/strong>:\n
              \n
            • The loop iterates over our_list<\/code>, and upon finding the first occurrence of their_flower<\/code>, it removes it using del<\/code>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
            • Task 5: Remove Second Element<\/strong>:\n
                \n
              • del our_list[1]<\/code> removes the second element (index 1).<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                Issues in Original Code:<\/h3>\n\n\n\n
                  \n
                • Task 3<\/strong>: The break<\/code> statement was missing, leading to multiple replacements of my_flower2<\/code>.<\/li>\n\n\n\n
                • Task 4<\/strong>: Without break<\/code>, the loop would remove unintended items.<\/li>\n\n\n\n
                • Indentation was incorrect for loop bodies, causing potential runtime errors.<\/li>\n<\/ul>\n\n\n\n
                  Correct Output:<\/h3>\n\n\n\n
                  For the input:<\/p>\n\n\n\n
                  rose\npeony\nlily\nrose\ndaisy\naster\n<\/code><\/pre>\n\n\n\n
                  The output is:<\/p>\n\n\n\n
                  ['rose', 'peony', 'lily', 'rose', 'daisy']\n['rose', 'peony', 'lily', 'rose', 'daisy', 'aster']\n['rose', 'aster', 'lily', 'rose', 'daisy', 'aster']\n['rose', 'lily', 'rose', 'daisy', 'aster']\n['rose', 'rose', 'daisy', 'aster']\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
                  3.17 LAB: List basics Given the user inputs, complete a program that does the following tasks: Define a list, my_list, containing the user inputs: my_flower1, my_flower2, and my_flower3 in the same order.Define a list, your_list, containing the user inputs, your_flower1 and your_flower2, in the same order.Define a list, our_list, by concatenating my_list and your_list.Append the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-180334","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180334","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=180334"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/180334\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=180334"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=180334"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=180334"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}