The Problem:
As a beginner, it's easy to get lost in the vast ecosystem of Python. You find yourself googling basic logic over and over again.
The Solution:
Here are 7 built-in functions that will make your code cleaner and save you tons of time.
enumerate()
Stop using range(len(list)). Use enumerate to get both the index and the value.
Example: for index, value in enumerate(["apple", "banana"]): print(index, value)
zip()
Perfect for iterating over multiple lists simultaneously.
Example: names = ["Alice", "Bob"] and ages = [25, 30]. Use zip(names, ages) to pair them up.
map()
Apply a function to every item in an iterable.
Example: numbers = [1, 2, 3] with list(map(lambda x: x**2, numbers)) gives [1, 4, 9].
filter()
Filter out elements based on a condition.
Example: numbers = [1, 2, 3, 4, 5] with list(filter(lambda x: x % 2 == 0, numbers)) gives [2, 4].
F-Strings
The cleanest way to format strings.
Example: name = "Alice" with print(f"Hello, {name}!") gives Hello, Alice!.
List Comprehensions
A concise way to create lists.
Example: squares = [x**2 for x in range(5)] gives [0, 1, 4, 9, 16].
sorted()
Sort lists effortlessly.
Example: numbers = [3, 1, 2] with sorted(numbers) gives [1, 2, 3].
Conclusion:
Mastering these built-ins will drastically improve your workflow. What's your favorite underrated Python function? Let me know in the comments below! 👇
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Top comments (1)
If you have any questions about these functions, feel free to ask! I'll reply to everyone.