🇮🇳 Support an Indian Startup! ❤️

Buyhatke — India’s shopping assistant startup, founded by IIT Kharagpur graduates, is helping shoppers make smarter buying decisions.

BUYHATKE APP IS AVAILABLE ON PLAY STORE AND APP STORE

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Output:
[20, 40, 60]
 

First, filter() keeps only even numbers.

Then, map() multiplies each by 10.

🔹 11. Common Mistakes

❌ Forgetting to Convert map() to a List 
result = map(lambda x: x * 2, numbers)
→
<map object at ...>
 

Correct:
print(list(result))
❌ Forgetting to Import reduce()
result = reduce(lambda a, b: a + b, [1, 2, 3])
→
NameError
 

Correct:
from functools import reduce
🎯 Practice Questions 

1. Create a lambda function that returns the cube of a number. 

2. Use map() to convert a list of temperatures from Celsius to Fahrenheit. 

3. Use filter() to find numbers greater than 50. 

4. Use reduce() to calculate the product of a list of numbers. 

5. Combine filter() and map() to square only the odd numbers in a list.

🎯 Key Takeaways

✅ Lambda functions are short, anonymous functions.

✅ map() transforms every element in an iterable.

✅ filter() selects elements based on a condition.

✅ reduce() combines all elements into a single value.

✅ These functions are widely used for data transformation, preprocessing, and feature engineering in Data Science.


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Since your device is already connected to the internet, you can actually get paid for the data you aren't using.

Honeygain is a trusted app that runs quietly in the background of your phone or PC. It just securely shares your unused bandwidth with researchers and pays you for it. Your connection stays 100% encrypted, and it never accesses your personal data, files, or browsing history.

🎁 Official Bonus:
If you use the invite link below, you get an instant $5 starting bonus to help you reach your first cash payout faster.

👇 How to set it up in 2 minutes:

1. Click the link and create your free account:
https://bit.ly/3wUxw09

2. Download the app (works on Android, Windows, Mac, or Linux).

3. Log in, let it run in the background, and collect your passive income.

🔗 Claim your free $5 Bonus here:
https://bit.ly/3wUxw09

💡 Pro-Tip: You can connect both your phone and your laptop to the same account to double your earning speed!