Lab1 Python Basics.ipynb

Kernel: Python 3 (ipykernel)

Question 1: Student Grade Calculator

Write a Python script that:

• Takes student names and their marks (out of 100) as input from the user in a loop (until the user types "stop").

• Stores this information in a dictionary where the key is the student name and the value is the marks.

• After input is complete, iterate through the dictionary and:

• Print each student's name with their grade based on the following rules:

       90-100: Grade A
  
       75-89: Grade B
  
       50-74: Grade C
  
      Below 50: Grade F
  

# Student Grade Calculator

# Initialize an empty dictionary
students = {}

while True:
    name = input("Enter student name (or 'stop' to finish): ")
    if name.lower() == 'stop':
        break
    marks = int(input(f"Enter marks for {name}: "))
    students[name] = marks

print("\nGrades:")
for student, marks in students.items():
    if marks >= 90:
        grade = 'A'
    elif marks >= 75:
        grade = 'B'
    elif marks >= 50:
        grade = 'C'
    else:
        grade = 'F'
    print(f"{student}: {grade}")

Enter student name (or 'stop' to finish): Ojes
Enter marks for Ojes: 90
Enter student name (or 'stop' to finish): Ashi
Enter marks for Ashi: 100
Enter student name (or 'stop' to finish): 50
Enter marks for 50: 50
Enter student name (or 'stop' to finish): stop

Grades:
Ojes: A
Ashi: A
50: C

Question 2: Word Frequency Counter

Write a Python script that:

• Takes a sentence as input from the user.

• Splits the sentence into words and counts the frequency of each word using a dictionary.

• Print the frequency of each word, and also:

• If a word appears more than 3 times, print "High Frequency" next to it.

• Otherwise, print "Normal Frequency"

# Word Frequency Counter

sentence = input("Enter a sentence: ")
words = sentence.split()

# Initialize an empty dictionary for word count
word_count = {}

# Count frequency of each word
for word in words:
    word = word.lower()  # Convert to lowercase for consistency
    if word in word_count:
        word_count[word] += 1
    else:
        word_count[word] = 1

# Display results
print("\nWord Frequencies:")
for word, count in word_count.items():
    if count > 3:
        status = "High Frequency"
    else:
        status = "Normal Frequency"
    print(f"{word}: {count} -> {status}")

Enter a sentence: happy happy sad sad

Word Frequencies:
happy: 2 -> Normal Frequency
sad: 2 -> Normal Frequency