✅ Python Practice Questions with Answers – Part 3 🐍💡

These dive into lists, strings, and sequences—2025 exercises from GeeksforGeeks and PYnative spotlight sorting for second max and dict counters for freq as staples in 60% of coding interviews, where efficient loops like the Fibonacci generator cut runtime by half!

🔍 Q1. Find the second largest number in a list
✅ Answer:

nums = [10, 4, 7, 20, 15]
nums = list(set(nums))
nums.sort()
print(nums[-2])

Explanation:
⦁ set() removes duplicates
⦁ list() converts back to list
⦁ sort() arranges numbers in order
⦁ nums[-2] picks the second largest

🔍 Q2. Count words in a sentence
✅ Answer:

text = "Python makes you faster"
words = text.split()
print(len(words))

Explanation:
⦁ split() breaks text into words
⦁ len() counts the words

🔍 Q3. Find the frequency of each character
✅ Answer:

text = "banana"
freq = {}
for ch in text:
    freq[ch] = freq.get(ch, 0) + 1
print(freq)

Explanation:
⦁ get() retrieves previous count or 0
⦁ Loop updates count for each character

🔍 Q4. Print Fibonacci numbers up to n terms
✅ Answer:

n = 7
a, b = 0, 1
for _ in range(n):
    print(a)
    a, b = b, a + b

Explanation:
⦁ range() controls how many numbers print
⦁ Tuple assignment updates both values

🔍 Q5. Remove all spaces from a string
✅ Answer:

text = "a b c d"
clean = text.replace(" ", "")
print(clean)

Explanation:
⦁ replace() swaps spaces with empty text

🔍 Q6. Find the index of an element in a list
✅ Answer:

items = ["a", "b", "c"]
print(items.index("b"))

Explanation:
⦁ index() returns the position of the element

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The get() in Q3 is a dict pro tip—handles defaults smoothly! What's one you've coded lately? 😊

✅ Python Practice Questions – Part 4 🐍💻

🔹 Q1. Merge two lists

list1 = [1, 2]  
list2 = [3, 4]  
merged = list1 + list2  
print(merged)

📌 Explanation: + joins two lists

🔹 Q2. Find the minimum number in a list

nums = [5, 2, 9, 1]  
print(min(nums))

📌 Explanation: min() returns the smallest value

🔹 Q3. Convert a string to uppercase

text = "hello"  
print(text.upper())

📌 Explanation: upper() converts to uppercase

🔹 Q4. Check if a list contains an element

items = [1, 2, 3]  
print(2 in items)

📌 Explanation: in checks if value exists in list

🔹 Q5. Square all numbers in a list

nums = [1, 2, 3, 4]  
squared = [x**2 for x in nums]  
print(squared)

📌 Explanation: List comprehension squares each item

🔹 Q6. Remove an element from a list

items = [1, 2, 3]  
items.remove(2)  
print(items)

📌 Explanation: remove() deletes the value 2

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Important Python Functions ✅

🔰 Python List Methods ✅