⚡️ Speed up function last_leaf by 13% in src/black/nodes.py

[codeflash-ai]

📄 last_leaf in src/black/nodes.py

✨ Performance Summary:

• Speed Increase: 📈 13% (0.13x faster)
• Runtime Reduction: ⏱️ From 1.34 microsecond down to 1.19 microsecond (best of 36 runs)

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📝 Explanation and details

Key Optimizations and Changes

2. Reduced Type Checks: Minimized unnecessary attribute type checks and redundant logic within the __init__ method.

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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	✅ 2 Passed	See below
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	🔘 None Found
📊 Coverage	60.0%

🌀 Generated Regression Tests Details

Click to view details

from typing import Any, Optional, Union

# imports
import pytest  # used for our unit tests
from black.nodes import last_leaf
# function to test
from blib2to3.pytree import Leaf, Node

LN = Union[Leaf, Node]
from black.nodes import last_leaf

# unit tests

def test_single_leaf_node():
    """Test case for a single Leaf node."""
    leaf = Leaf(type=1, value="a")
    codeflash_output = last_leaf(leaf)














from typing import Any, Optional, Union

# imports
import pytest  # used for our unit tests
from black.nodes import last_leaf
from blib2to3.pytree import Leaf, Node

# function to test
LN = Union[Leaf, Node]
from black.nodes import last_leaf

# unit tests

def test_single_leaf():
    # Test with a single Leaf node
    leaf = Leaf(type=1, value="leaf")
    codeflash_output = last_leaf(leaf)

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