1. import random Animals= ['dog', 'Cat', 'Lions', 'cow', 'elephant' ] random.choice (pets) 2. Animals.sort (reverse=True) 3. Animals.remove('Cat') 4. Animals.reverse()
1. import random Animals= ['dog', 'Cat', 'Lions', 'cow', 'elephant' ] random.choice (pets) 2. Animals.sort (reverse=True) 3. Animals.remove('Cat') 4. Animals.reverse()
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
![## Section 2
### Run the following codes and find the outputs:
1.
```python
import random
Animals = ['dog', 'Cat', 'Lions', 'cow', 'elephant']
random.choice(pets)
```
2.
```python
Animals.sort(reverse=True)
```
3.
```python
Animals.remove('Cat')
```
4.
```python
Animals.reverse()
```
5.
```python
import random
Set your own Example.
```
6.
```python
import copy
letter = ['a', 'n', 'o', 'p']
id(letter)
```
7.
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
8.
```plaintext
interactive shell
word=beautiful
```
9.
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
```
### Explanation
In this section, various Python code snippets are presented. The reader is instructed to run each code segment and observe the outputs. The tasks involve operations such as random selection, sorting lists in reverse, removing elements, reversing a list, copying lists, replacing elements, and using interactive input to retrieve and print stored data (in this case, birthdates associated with names).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1edcee5a-2021-4c17-a462-3c7143d1cbe8%2Fd0142b1a-a05b-45df-aa8c-438c1485ce59%2Fxt7by5h_processed.png&w=3840&q=75)
Transcribed Image Text:## Section 2
### Run the following codes and find the outputs:
1.
```python
import random
Animals = ['dog', 'Cat', 'Lions', 'cow', 'elephant']
random.choice(pets)
```
2.
```python
Animals.sort(reverse=True)
```
3.
```python
Animals.remove('Cat')
```
4.
```python
Animals.reverse()
```
5.
```python
import random
Set your own Example.
```
6.
```python
import copy
letter = ['a', 'n', 'o', 'p']
id(letter)
```
7.
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
8.
```plaintext
interactive shell
word=beautiful
```
9.
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
```
### Explanation
In this section, various Python code snippets are presented. The reader is instructed to run each code segment and observe the outputs. The tasks involve operations such as random selection, sorting lists in reverse, removing elements, reversing a list, copying lists, replacing elements, and using interactive input to retrieve and print stored data (in this case, birthdates associated with names).
![Certainly! Below is the transcription of the image text suitable for an educational website, including an explanation of the code:
---
### Python Script Examples and Explanation
#### Code Snippets:
**7. Modify List Elements:**
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
- This code demonstrates how to change an element in a list. The second element 'bat' is replaced with 'rabbit'.
**8. Interactive Shell:**
- The term "word=beautiful" suggests using an interpreter shell or setting variables interactively.
**9. Birthday Lookup Program:**
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
else:
print('I do not have birthday information for ' + name)
print('What is their birthday?')
bday = input()
birthdays[name] = bday
print('Birthday database updated.')
```
- This script is a simple command-line program that allows users to look up birthdays. If the name is not in the dictionary, it prompts the user to add it.
**10. Working with Dictionaries (Spam Example):**
```python
spam = {'color': 'red', 'age': 42}
for v in spam.values():
print(v)
for k in spam.keys():
print(k)
for i in spam.items():
print(i)
```
- This code snippet iterates over a dictionary, printing values, keys, and key-value pairs. It’s a basic demonstration of how to handle dictionary operations in Python.
---
Each of these examples provides fundamental insights into Python data structures such as lists and dictionaries, showing how to manipulate and interact with them effectively.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1edcee5a-2021-4c17-a462-3c7143d1cbe8%2Fd0142b1a-a05b-45df-aa8c-438c1485ce59%2Fnb3irq8_processed.png&w=3840&q=75)
Transcribed Image Text:Certainly! Below is the transcription of the image text suitable for an educational website, including an explanation of the code:
---
### Python Script Examples and Explanation
#### Code Snippets:
**7. Modify List Elements:**
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
- This code demonstrates how to change an element in a list. The second element 'bat' is replaced with 'rabbit'.
**8. Interactive Shell:**
- The term "word=beautiful" suggests using an interpreter shell or setting variables interactively.
**9. Birthday Lookup Program:**
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
else:
print('I do not have birthday information for ' + name)
print('What is their birthday?')
bday = input()
birthdays[name] = bday
print('Birthday database updated.')
```
- This script is a simple command-line program that allows users to look up birthdays. If the name is not in the dictionary, it prompts the user to add it.
**10. Working with Dictionaries (Spam Example):**
```python
spam = {'color': 'red', 'age': 42}
for v in spam.values():
print(v)
for k in spam.keys():
print(k)
for i in spam.items():
print(i)
```
- This code snippet iterates over a dictionary, printing values, keys, and key-value pairs. It’s a basic demonstration of how to handle dictionary operations in Python.
---
Each of these examples provides fundamental insights into Python data structures such as lists and dictionaries, showing how to manipulate and interact with them effectively.
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Follow-up Question
I need to do question 5 and every question after that. Please help. I already know 1-4.
![The image contains a snippet from a programming lecture or tutorial focused on Python, specifically about lists and dictionaries. Here is a detailed transcription of the content:
---
**Python Code Example: Lists and Dictionaries**
**7. Working with Lists:**
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
**8. Interactive Shell Concept:**
- Focuses on modifying list elements interactively.
**9. Using Dictionaries:**
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
else:
print('I do not have birthday information for ' + name)
print('What is their birthday?')
bday = input()
birthdays[name] = bday
print('Birthday database updated.')
```
**Explanation:**
- This script demonstrates how to interactively manage a dictionary that stores birthday information. The user can look up existing entries or add new ones.
**10. Iterating over a Dictionary:**
```python
spam = {'color': 'red', 'age': 42}
for v in spam.values():
print(v)
for k in spam.keys():
print(k)
for i in spam.items():
print(i)
```
**Explanation:**
- This example shows how to iterate over the values, keys, and items of a dictionary. It prints each element individually, demonstrating different methods to access dictionary data.
---
This educational content illustrates basic programming concepts in Python that deal with data structures such as lists and dictionaries, allowing users to store, modify, and retrieve data efficiently.](https://content.bartleby.com/qna-images/question/1edcee5a-2021-4c17-a462-3c7143d1cbe8/6b645dc5-5867-4167-8412-3f5f8caa4850/buuzc6a_processed.jpeg)
Transcribed Image Text:The image contains a snippet from a programming lecture or tutorial focused on Python, specifically about lists and dictionaries. Here is a detailed transcription of the content:
---
**Python Code Example: Lists and Dictionaries**
**7. Working with Lists:**
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
**8. Interactive Shell Concept:**
- Focuses on modifying list elements interactively.
**9. Using Dictionaries:**
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
else:
print('I do not have birthday information for ' + name)
print('What is their birthday?')
bday = input()
birthdays[name] = bday
print('Birthday database updated.')
```
**Explanation:**
- This script demonstrates how to interactively manage a dictionary that stores birthday information. The user can look up existing entries or add new ones.
**10. Iterating over a Dictionary:**
```python
spam = {'color': 'red', 'age': 42}
for v in spam.values():
print(v)
for k in spam.keys():
print(k)
for i in spam.items():
print(i)
```
**Explanation:**
- This example shows how to iterate over the values, keys, and items of a dictionary. It prints each element individually, demonstrating different methods to access dictionary data.
---
This educational content illustrates basic programming concepts in Python that deal with data structures such as lists and dictionaries, allowing users to store, modify, and retrieve data efficiently.
![Sure! Here is the transcription of the image for an educational website:
---
**Section 2**
Run the following codes and find the outputs:
1.
```python
import random
Animals = ['dog', 'Cat', 'Lions', 'cow', 'elephant']
random.choice(pets)
```
2.
```python
Animals.sort(reverse=True)
```
3.
```python
Animals.remove('Cat')
```
4.
```python
Animals.reverse()
```
5.
```python
import random
Set your own Example.
```
6.
```python
import copy
letter = ['n', 'n', 'o', 'p']
id(letter)
```
7.
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
8. Interactive shell
```python
word = beautiful
```
9.
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
```
---
Note: There are no graphs or diagrams in the provided image.](https://content.bartleby.com/qna-images/question/1edcee5a-2021-4c17-a462-3c7143d1cbe8/6b645dc5-5867-4167-8412-3f5f8caa4850/7f3zhc_processed.jpeg)
Transcribed Image Text:Sure! Here is the transcription of the image for an educational website:
---
**Section 2**
Run the following codes and find the outputs:
1.
```python
import random
Animals = ['dog', 'Cat', 'Lions', 'cow', 'elephant']
random.choice(pets)
```
2.
```python
Animals.sort(reverse=True)
```
3.
```python
Animals.remove('Cat')
```
4.
```python
Animals.reverse()
```
5.
```python
import random
Set your own Example.
```
6.
```python
import copy
letter = ['n', 'n', 'o', 'p']
id(letter)
```
7.
```python
Animals = ['cat', 'bat', 'rat', 'elephant']
Animals[1] = 'rabbit'
Animals
```
8. Interactive shell
```python
word = beautiful
```
9.
```python
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}
while True:
print('Enter a name: (blank to quit)')
name = input()
if name == '':
break
if name in birthdays:
print(birthdays[name] + ' is the birthday of ' + name)
```
---
Note: There are no graphs or diagrams in the provided image.
Solution
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