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Python Code Samples

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6 matches
Strings & text easy

How to Sort Text Alphabetically in Python

Sort words or lines alphabetically with case-insensitive ordering while preserving original casing.

sorting text-processing strings
Python
def sort_words(text):
    """Sort words alphabetically (case-insensitive), preserving case."""
    words = text.split()
    return sorted(words, key=str.lower)


def sort_lines(text):
    """Sort lines alphabetically (case-insensitive), preserving case."""
    lines = [line for line in text.splitlines() if line.strip(…
12 0 Open
Strings & text easy

How to Sort Text in Python with a Simple Helper Function

A compact helper function that sorts a list of strings or splits a string into words and sorts them alphabetically, with optional reverse ordering.

sorting strings text-processing
Python
def sort_text(data, reverse=False):
    """
    Sort a list of strings (or a single string split into words) alphabetically.
    """
    if isinstance(data, str):
        words = data.split()
    else:
        words = [str(item) for item in data]
    return sorted(words, reverse=reverse)


if __name__ == "__main__":
 …
12 0 Open
Functions & basics easy

How to Use a Lambda Sort Key in Python

Sort a list of strings by length, then alphabetically, using a lambda function as the sorting key in Python.

lambda sorting sorted
Python
def sort_words(words):
    """Sort words by length, then alphabetically using a lambda key."""
    return sorted(words, key=lambda word: (len(word), word))

if __name__ == "__main__":
    sample_words = ["apple", "kiwi", "banana", "fig", "cherry"]
    result = sort_words(sample_words)
    
    print("Original:", sampl…
15 0 Open
Dictionaries & sets easy

Count word frequency in Python with dict and Counter

Count how often each word appears in a string using Counter, converted to a plain dict, and print results alphabetically.

counter dictionary word-frequency
Python
from collections import Counter
import re

def count_word_frequency(text):
    words = re.findall(r'\b\w+\b', text.lower())
    return dict(Counter(words))

if __name__ == "__main__":
    sample_text = "The quick brown fox jumps over the lazy dog. The dog barks, and the fox runs."
    frequency = count_word_frequency(…
12 0 Open
Dictionaries & sets easy

How to Sort Dictionary Keys Alphabetically in Python

This code returns a list of dictionary keys sorted alphabetically, using a case-insensitive comparison while preserving the original insertion order for keys that are equal.

sorting dictionary case-insensitive
Python
data = {
    "banana": 3,
    "apple": 1,
    "Cherry": 5,
    "date": 2,
    "apple": 4,
    "Fig": 6,
    "banana": 2,
}

def sort_dict_keys_alphabetically(d):
    """Return a list of keys sorted alphabetically (case-insensitive), stable for duplicates."""
    return sorted(d.keys(), key=lambda k: k.lower())

if __n…
11 0 Open
Algorithms & data structures easy

Sort Unique Values by Frequency in Python

Count element frequencies with Counter and sort unique values by descending frequency, breaking ties alphabetically.

counter sorting frequency
Python
from collections import Counter

def sort_unique_by_frequency(values):
    counts = Counter(values)
    return sorted(counts.keys(), key=lambda x: (-counts[x], x))

if __name__ == "__main__":
    data = [4, 2, 2, 8, 3, 3, 1, 3, 5, 5, 5, 5, 1]
    result = sort_unique_by_frequency(data)
    print(f"Sorted unique values…
12 0 Open

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