Ten additional coding tasks · W031–W040
Choose starters to try yourself, or download a separate worked example pack after attempting the tasks.
Chapter 4 starters ↓Chapter 4 worked examples ↓Count the vowels in an example sentence.
Make the text lowercase first.
text = "Programming is creative"
vowels = sum(1 for c in text.lower() if c in "aeiou")
print("Vowels:", vowels)
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Reverse the letters of the word Python.
Try slicing with a step of -1.
word = "Python"
print(word[::-1])
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Create initials for the name Ada Lovelace.
Split the name at spaces.
name = "Ada Lovelace"
initials = "".join(part[0].upper() for part in name.split())
print(initials)
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Clean extra spaces around a typed answer and lower-case it.
Use strip() and lower() together.
answer = " YeS "
cleaned = answer.strip().lower()
print(cleaned)
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Check whether racecar reads the same backwards.
Compare the string with its reverse.
word = "racecar"
print("Palindrome" if word == word[::-1] else "Not palindrome")
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Count the words in an example sentence.
split() creates a list of words.
sentence = "Python helps me solve problems"
print("Word count:", len(sentence.split()))
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Replace a placeholder in a sentence with the word Python.
Use string replace().
message = "I enjoy SUBJECT lessons."
print(message.replace("SUBJECT", "Python"))
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Show the final four characters of a sample reference code.
Slicing with [-4:] takes the last four.
reference = "ABCDEF4826"
print("Reference ending:", reference[-4:])
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Count the number of letter a characters, ignoring case.
Use lower() and count().
text = "Amazing Adventures"
print("a letters:", text.lower().count("a"))
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.
Extract alphabetic characters from a mixed string.
Use isalpha() in a loop.
text = "Py3thon! 2026"
letters = "".join(c for c in text if c.isalpha())
print(letters)
One possible solution. Try writing your own first.
Extension: Change the sample values and test at least two different cases.