Commands And Requests

In Python, the positional parameters must always appear before the default parameters in the function definition. This is because Python relies on the position of arguments for mapping to function parameters. If default parameters were placed before positional ones, it would create ambiguity in argument mapping.

def showInLines(): # Open the file STORY.TXT in read mode with open("STORY.TXT", "r") as file: content = file.read() # Read the entire content of the file sentences = content.split('. ') # Split by '. ' for sentences # Process further to handle '? ' and '! ' final_sentences = [] for sentence in sentences: sub_sentences = sentence.split('? ') if '?' in sentence else sentence.split('! ') final_sentences.extend(sub_sentences) # Print each sentence in a separate line for sentence in final_sentences: print(sentence.strip()) # Strip leading/trailing whitespaces 

Explanation: The file STORY.TXT is opened in read mode using the with open() statement. The content of the file is read into a string and split into sentences using split('. '). For sentences containing ? or !, further splitting is done to ensure each sentence is correctly separated. Each sentence is then printed on a new line after removing extra whitespaces using strip().

# Step-by-step execution:
# 1. Initially, x = 100 and y = 200.
# 2. First function call: callon(100, 200)
# b = 100 + 200 = 300
# a = 300 - 200 = 100
# Output: 300 # 100
# Return value: 300
# x is updated to 300. # 3. print(x, "@", y)
# Output: 300 @ 200 # 4. Second function call: callon(200)
# b = 200 + 10 = 210
# a = 210 - 10 = 200
# Output: 210 # 200
# Return value: 210
# y is updated to 210. # 5. print(x, "@", y)
# Output: 300 @ 210 # Final Output:
300 # 100
300 @ 200
210 # 200
300 @ 210 

Explanation: The function callon takes two arguments b and a, with default values b=20 and a=10. Inside the function: - b is updated as b = b + a. - a is updated as a = b - a. - The function prints the values of b and a, separated by "#". - Finally, the updated value of b is returned. The first function call updates x, while the second function call updates y. The final output is generated based on the updated values of x and y.

# Given tuple
subject = ("Mathematics", "Physics", "Chemistry", "Biology") # Step 1: Convert the tuple to a list
subject_list = list(subject) # Step 2: Delete the last element of the list
subject_list.pop() # Resulting list
print(subject_list) # Output: ['Mathematics', 'Physics', 'Chemistry'] 

Explanation: A tuple named subject is given, which stores the names of different subjects. To convert the tuple to a list, the list() function is used: subject_list = list(subject). The pop() method is then used to remove the last element of the list: subject_list.pop(). The resulting list contains all elements of the tuple except the last one. Example:

Input tuple: ("Mathematics", "Physics", "Chemistry", "Biology")
Resulting list: ['Mathematics', 'Physics', 'Chemistry'] 

def showGrades(S): # Function definition for name, marks in S.items(): # Loop through each student and their marks avg = sum(marks) / len(marks) # Calculate the average of marks if avg > 90: # Check for grade A grade = "A" elif avg > 60: # Check for grade B grade = "B" else: # Check for grade C grade = "C" print(f"{name} - {grade}") # Print the name and grade # Example dictionary
S = {"AMIT": [92, 86, 64], "NAGMA": [65, 42, 43], "DAVID": [92, 90, 88]}
showGrades(S) # Call the function 

Explanation: The function showGrades(S) iterates through the dictionary S, where each key is a student's name, and the value is a list of marks in English, Math, and Science. The average is calculated using sum(marks) / len(marks). Grades are assigned based on the average using the conditions: - If the average is greater than or equal to 90, the grade is "A". - If the average is less than 90 but greater than or equal to 60, the grade is "B". - If the average is less than 60, the grade is "C". The result is printed in the format Name - Grade.

In Python, the except clause can be used without specifying a particular exception. For example:

try: # some code
except: # handle any exception 

However, it is a good practice to specify the exception type to make error handling more explicit and readable.

The code iterates over the range , which means and . For each iteration:

• When : random.randrange(2) generates either or . The output could be ('RED') or ('YELLOW').
• When : random.randrange(1) always generates . The output is ('RED').

One possible output is YELLOW \# RED \#, which matches option (a).