⚡️ Speed up function strip_specifier_set by 11% in src/black/files.py

[codeflash-ai]

📄 strip_specifier_set in src/black/files.py

✨ Performance Summary:

• Speed Increase: 📈 11% (0.11x faster)
• Runtime Reduction: ⏱️ From 34.7 microseconds down to 31.3 microseconds (best of 615 runs)

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📝 Explanation and details

Certainly! The rewritten version of the Python program aims to run faster by reducing unnecessary computations and optimizing the loop. Here is the optimized version.

Changes made for optimization.

1. Used a local variable specifier_add for the append method to reduce attribute lookups.
2. Precomputed s_operator instead of accessing the operator multiple times.
3. Split the version string using split(".") once and reused the parts instead of creating Version objects.

This results in fewer redundant computations and improves the overall efficiency of the code.

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✅ Correctness verification

The new optimized code was tested for correctness. The results are listed below:

Test	Status	Details
⚙️ Existing Unit Tests	🔘 None Found
🌀 Generated Regression Tests	✅ 4 Passed	See below
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	🔘 None Found
📊 Coverage	53.3%

🌀 Generated Regression Tests Details

Click to view details

import pytest  # used for our unit tests
from black.files import strip_specifier_set
from packaging.specifiers import Specifier, SpecifierSet
from packaging.version import Version


# Invalid Specifiers

def test_large_scale():
    large_specifiers = ",".join(f"=={i}.2.3" for i in range(1, 1001))
    expected_result = ",".join(f"=={i}.2" for i in range(1, 1001))

    mixed_large_specifiers = ",".join(f"=={i}.2.3,>={i}.3.4,~={i}.4.5,==={i}.5.6,>{i}.6.7" for i in range(1, 201))
    expected_mixed_result = ",".join(f"=={i}.2,>={i}.3,~={i}.4,==={i}.5,>={i}.6" for i in range(1, 201))
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.
import pytest  # used for our unit tests
from black.files import strip_specifier_set
# function to test
from packaging.specifiers import Specifier, SpecifierSet
from packaging.version import Version


# Invalid Inputs

def test_invalid_operator():
    with pytest.raises(ValueError):
        strip_specifier_set(SpecifierSet("<>1.2.3"))

# Large Scale Test Cases
def test_large_number_of_specifiers():
    specifiers = ",".join(f"=={i}.2.3" for i in range(1000))
    expected = ",".join(f"=={i}.2" for i in range(1000))

# Deterministic Behavior
def test_deterministic_behavior():
    spec_set = SpecifierSet("==1.2.3")
    codeflash_output = strip_specifier_set(spec_set)

# Complex Combinations

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