What are some exercises to practice list comprehensions in Python?

What are some exercises to practice list comprehensions in Python?

Here are a few exercises you can try:

1. Create a list of squares for numbers from 1 to 10.
2. Generate a list of even numbers from 1 to 20.
3. Create a list of the lengths of each word in a given sentence.

Can you provide solutions for those exercises?

Sure! Here are the solutions:

1. Squares: [x**2 for x in range(1, 11)]
2. Even numbers: [x for x in range(1, 21) if x % 2 == 0]
3. Lengths of words: [len(word) for word in 'This is a sample sentence'.split()].

What if I want to filter out odd numbers from a list?

You can use a list comprehension like this: [x for x in your_list if x % 2 == 0] to get only even numbers.

Are there any more advanced exercises?

Absolutely! Try these:

1. Flatten a list of lists.
2. Create a dictionary from two lists using list comprehension.
3. Generate a list of tuples from two lists.