10 Python Tricks That Prove You’re a Python Expert

 

Python is a powerful and versatile language, but mastering its hidden tricks can take your skills to the next level. If you know these Python tricks, you’re absolutely a Python pro!

1. Swap Variables in One Line

No need for a temporary variable—swap values like a pro:

a, b = b, a

2. List Comprehensions for Quick Iterations

Instead of using loops, use list comprehensions:

squares = [x**2 for x in range(10)]

3. Use zip() to Pair Elements

Efficiently iterate over multiple lists in parallel:

names = ["Alice", "Bob", "Charlie"]
ages = [25, 30, 35]
for name, age in zip(names, ages): 
    print(name, age)

4. Dictionary Comprehension for Cleaner Code

Create dictionaries in a single line:

squares_dict = {x: x**2 for x in range(5)}

5. Use enumerate() Instead of Range-Based Loops

Instead of using range(len()), use enumerate():

items = ["apple", "banana", "cherry"]
for index, item in enumerate(items, start=1): 
    print(index, item)

6. Unpacking Multiple Values from a List

Assign multiple values effortlessly:

data = ["Python", 3.9, "Pro"]
language, version, level = data

7. collections.Counter for Quick Frequency Count

Count occurrences in a list easily:

from collections import Counter
nums = [1, 2, 2, 3, 3, 3, 4]
print(Counter(nums))

8. Use *args and **kwargs for Flexible Functions

Allow functions to accept any number of arguments:

def greet(*names):
    for name in names:
        print(f"Hello, {name}!")
greet("Alice", "Bob", "Charlie")

9. setdefault() for Handling Missing Keys

Avoid key errors when working with dictionaries:

data = {}
data.setdefault("name", "Unknown")
print(data["name"])

10. Use any() and all() for Logical Checks

Check conditions in one line:

numbers = [0, 1, 2, 3]
print(any(numbers)) # True if any value is non-zero
print(all(numbers)) # True if all values are non-zero