⚡️ Speed up function find_common_tags by 18,960%

[codeflash-ai-dev]

📄 18,960% (189.60x) speedup for find_common_tags in common_tags.py

⏱️ Runtime : 2.31 seconds → 12.1 milliseconds (best of 414 runs)

📝 Explanation and details

Certainly! The program can be optimized by utilizing sets for intersection operations, which are generally faster than list comprehensions for this kind of task. Here’s the optimized version.

Changes Made.

1. Utilized Set for Intersection: Instead of a list comprehension inside the loop, using set operations (intersection_update) significantly optimizes the performance for finding common elements.
2. Retained the Original Functionality: The function signature and return value remain unchanged.

This will run faster, especially when dealing with a large number of articles or tags, as set operations are generally more efficient for membership tests and intersections.

✅ Correctness verification report:

Test	Status
⚙️ Existing Unit Tests	🔘 None Found
🌀 Generated Regression Tests	✅ 54 Passed
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	✅ 6 Passed
📊 Tests Coverage	100.0%

🌀 Generated Regression Tests Details

from __future__ import annotations

# imports
import pytest  # used for our unit tests
from common_tags import find_common_tags

# unit tests

# Test single article with tags
def test_single_article_with_tags():
    articles = [{"tags": ["python", "coding", "development"]}]
    codeflash_output = find_common_tags(articles)

# Test multiple articles with common tags
def test_multiple_articles_with_common_tags():
    articles = [{"tags": ["python", "coding"]}, {"tags": ["python", "development"]}, {"tags": ["python", "scripting"]}]
    codeflash_output = find_common_tags(articles)

# Test multiple articles with no common tags
def test_multiple_articles_with_no_common_tags():
    articles = [{"tags": ["python", "coding"]}, {"tags": ["java", "development"]}, {"tags": ["javascript", "scripting"]}]
    codeflash_output = find_common_tags(articles)

# Test empty list of articles
def test_empty_list_of_articles():
    articles = []
    codeflash_output = find_common_tags(articles)

# Test articles with empty tags
def test_articles_with_empty_tags():
    articles = [{"tags": []}, {"tags": []}]
    codeflash_output = find_common_tags(articles)

# Test articles with one empty tag list
def test_articles_with_one_empty_tag_list():
    articles = [{"tags": ["python", "coding"]}, {"tags": []}]
    codeflash_output = find_common_tags(articles)

# Test missing "tags" key in an article
def test_missing_tags_key_in_an_article():
    articles = [{"tags": ["python", "coding"]}, {"name": "Article without tags"}]
    with pytest.raises(KeyError):
        find_common_tags(articles)

# Test non-list "tags" value

def test_single_article_with_duplicate_tags():
    articles = [{"tags": ["python", "python", "coding"]}]
    codeflash_output = find_common_tags(articles)

# Test multiple articles with duplicate tags
def test_multiple_articles_with_duplicate_tags():
    articles = [{"tags": ["python", "python", "coding"]}, {"tags": ["python", "coding", "coding"]}]
    codeflash_output = find_common_tags(articles)

# Test large number of articles
def test_large_number_of_articles():
    articles = [{"tags": [f"tag{i}" for i in range(1000)]}] * 1000
    codeflash_output = find_common_tags(articles)

# Test large number of tags in each article
def test_large_number_of_tags_in_each_article():
    articles = [{"tags": [f"tag{i}" for i in range(1000)]}, {"tags": [f"tag{i}" for i in range(500, 1500)]}]
    codeflash_output = find_common_tags(articles)

# Test tags with different cases
def test_tags_with_different_cases():
    articles = [{"tags": ["Python", "coding"]}, {"tags": ["python", "Coding"]}]
    codeflash_output = find_common_tags(articles)

# Test tags with non-string elements
def test_tags_with_non_string_elements():
    articles = [{"tags": ["python", 123, None]}, {"tags": ["python", 123, "coding"]}]
    codeflash_output = find_common_tags(articles)
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

from __future__ import annotations

# imports
import pytest  # used for our unit tests
from common_tags import find_common_tags

# unit tests

def test_single_article():
    # Single article should return its tags
    articles = [{"tags": ["python", "coding", "tutorial"]}]
    codeflash_output = find_common_tags(articles)

def test_multiple_articles_with_common_tags():
    # Multiple articles with common tags should return the common tags
    articles = [{"tags": ["python", "coding"]}, {"tags": ["python", "coding", "tutorial"]}]
    codeflash_output = find_common_tags(articles)

def test_empty_list_of_articles():
    # Empty list of articles should return an empty set
    articles = []
    codeflash_output = find_common_tags(articles)

def test_articles_with_no_tags():
    # Articles with no tags should return an empty set
    articles = [{"tags": ["python", "coding"]}, {"tags": []}]
    codeflash_output = find_common_tags(articles)

def test_no_common_tags():
    # Articles with no common tags should return an empty set
    articles = [{"tags": ["python", "coding"]}, {"tags": ["java", "tutorial"]}]
    codeflash_output = find_common_tags(articles)

def test_case_sensitive_tags():
    # Tags with different cases should be treated as different tags
    articles = [{"tags": ["Python", "coding"]}, {"tags": ["python", "coding"]}]
    codeflash_output = find_common_tags(articles)

def test_duplicate_tags_within_article():
    # Articles with duplicate tags should handle them correctly
    articles = [{"tags": ["python", "python", "coding"]}, {"tags": ["python", "coding"]}]
    codeflash_output = find_common_tags(articles)

def test_large_number_of_articles():
    # Function should handle a large number of articles efficiently
    articles = [{"tags": ["tag1", "tag2", "tag3"]} for _ in range(1000)]
    codeflash_output = find_common_tags(articles)

def test_large_number_of_tags_in_articles():
    # Function should handle articles with a large number of tags
    articles = [{"tags": [f"tag{i}" for i in range(1000)]}, {"tags": [f"tag{i}" for i in range(500, 1500)]}]
    codeflash_output = find_common_tags(articles)

def test_mixed_content_in_tags():
    # Function should handle tags with mixed content such as numbers, special characters, and spaces
    articles = [{"tags": ["python3", "coding!", "data science"]}, {"tags": ["python3", "coding!", "machine learning"]}]
    codeflash_output = find_common_tags(articles)

def test_varying_number_of_tags_across_articles():
    # Function should handle articles with varying numbers of tags
    articles = [{"tags": ["python", "coding", "tutorial"]}, {"tags": ["python", "coding"]}, {"tags": ["python"]}]
    codeflash_output = find_common_tags(articles)

def test_overlapping_tags():
    # Function should correctly identify the common tags even when articles have overlapping but non-identical sets of tags
    articles = [{"tags": ["python", "coding", "tutorial"]}, {"tags": ["python", "coding", "guide"]}, {"tags": ["python", "coding", "reference"]}]
    codeflash_output = find_common_tags(articles)

def test_tags_as_subsets():
    # Function should handle cases where the tags of one article are a subset of another
    articles = [{"tags": ["python", "coding", "tutorial"]}, {"tags": ["python", "coding"]}, {"tags": ["coding"]}]
    codeflash_output = find_common_tags(articles)

def test_special_characters_in_tags():
    # Function should handle tags that contain special characters
    articles = [{"tags": ["py@thon", "cod#ing", "tu!torial"]}, {"tags": ["py@thon", "cod#ing"]}]
    codeflash_output = find_common_tags(articles)

# Run the tests
pytest.main()
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

from common_tags import find_common_tags
import pytest

def test_find_common_tags():
    with pytest.raises(KeyError):
        find_common_tags([(v1 := {'tags': ['']}), v1, {'': []}, {}])

def test_find_common_tags_2():
    find_common_tags([{'': [], 'tags': ['']}, {'\x00\x00\x00\x00': [''], 'tags': []}])

def test_find_common_tags_3():
    find_common_tags([])

To edit these changes git checkout codeflash/optimize-find_common_tags-m7v1i1aj and push.

[codeflash-ai-dev]

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in bubble_sort.py

⏱️ Runtime : 1070554.63 → 25.42 (best of undefined runs)

I created a new dependent PR with the suggested changes. Please review:

• ⚡️ Speed up function sorter by 4211531.56 in PR #227 (codeflash/optimize-find_common_tags-m7v1i1aj) #228

If you approve, it will be merged into this PR (branch codeflash/optimize-find_common_tags-m7v1i1aj).