Exercise: Conditional Statements

Exercise 1: Check Word Presence

Task: Write a code snippet that checks if a specific word is present in a given text.

Instructions:

  • Use the in operator to check if the word “language” is in the text.
  • Print a message indicating whether the word was found or not.
Show solution 
text = "Natural language processing is fascinating."
if "language" in text:
    print("The word 'language' is present in the text.")
else:
    print("The word 'language' is not present in the text.")
The word 'language' is present in the text.

Exercise 2: Classify Text Length

Task: Write a code snippet that classifies the length of the text as “short”, “medium”, or “long”.

Instructions:

  • Use conditional statements to classify the text based on its length:
    • Short: less than 20 characters
    • Medium: between 20 and 100 characters
    • Long: more than 100 characters
  • Print a message indicating the classification.
Show solution 
text = "Natural language processing."
length = len(text)

if length < 20:
    print("The text is short.")
elif 20 <= length <= 100:
    print("The text is medium.")
else:
    print("The text is long.")
The text is medium.

Exercise 3: Check for Uppercase

Task: Write a code snippet that checks if the first character of a sentence is uppercase.

Instructions:

  • Use an if statement to check if the first character of the sentence is uppercase.
  • Print a message indicating whether it is uppercase or not.
Show solution 
sentence = "Hello, world!"
if sentence[0].isupper():
    print("The sentence starts with an uppercase letter.")
else:
    print("The sentence does not start with an uppercase letter.")
The sentence starts with an uppercase letter.

Exercise 4: Check Palindrome

Task: Write a function that checks if a given word is a palindrome.

Instructions:

  • Define a function called is_palindrome(word) that takes a string parameter word.
  • Inside the function, use conditional statements to check if the word is the same when reversed.
  • Return True if it is a palindrome and False otherwise.
  • Call the function with a sample word (e.g., “radar”) and print the result.
Show solution 
def is_palindrome(word):
    return word == word[::-1]

# Sample usage
result = is_palindrome("radar")
print("Is 'radar' a palindrome?", result)  
Is 'radar' a palindrome? True

Exercise 5: Categorize Word Length

Task: Create a function that categorizes a word as short, medium, or long based on its length.

Instructions:

  • Define a function called categorize_word_length(word) that takes a string parameter word.
  • Inside the function, use conditional statements to categorize the word based on the following criteria:
    • Short: 1-3 letters
    • Medium: 4-6 letters
    • Long: More than 6 letters
  • Return the category as a string.
  • Call the function with a sample word (e.g., “NLP”) and print the result.
Show solution 
def categorize_word_length(word):
    length = len(word)
    
    if length <= 3:
        return "Short"
    elif 4 <= length <= 6:
        return "Medium"
    else:
        return "Long"

# Sample usage
result = categorize_word_length("NLP")

Exercise 6: Grade Classification

Task: Create a function that classifies a score into letter grades.

Instructions:

  • Define a function called grade_classification(score) that takes an integer parameter score.
  • Inside the function, use conditional statements to classify the score:
    • A: 90-100
    • B: 80-89
    • C: 70-79
    • D: 60-69
    • F: Below 60
  • Return the letter grade.
  • Call the function with a sample score (e.g., 85) and print the result.
Show solution 
def grade_classification(score):
    if 90 <= score <= 100:
        return "A"
    elif 80 <= score < 90:
        return "B"
    elif 70 <= score < 80:
        return "C"
    elif 60 <= score < 70:
        return "D"
    else:
        return "F"

# Sample usage
result = grade_classification(85)
print("The letter grade is:", result)  
The letter grade is: B
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