25 Amazing Python Tricks That Will Instantly Improve Your Code

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Python is a powerful and flexible language, but many developers only scratch the surface of what it can do. Whether you’re a beginner or an experienced programmer, these 25 Python tricks will help you write cleaner, faster, and more efficient code.

1. Swap Two Variables Without a Temporary Variable

Instead of using a temp variable, Python allows swapping in one line:

a, b = 5, 10
a, b = b, a
print(a, b)  # Output: 10 5

2. Use List Comprehensions for Quick List Creation

List comprehensions are faster and more readable than traditional loops:

squares = [x**2 for x in range(10)]
print(squares)  # Output: [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]

3. Merge Two Dictionaries in One Line

In Python 3.9+, you can merge dictionaries easily:

dict1 = {'a': 1, 'b': 2}
dict2 = {'c': 3, 'd': 4}
merged_dict = dict1 | dict2
print(merged_dict)  # Output: {'a': 1, 'b': 2, 'c': 3, 'd': 4}

4. Use Enumerate Instead of Range in Loops