Fix Quality Checks

README.md

@@ -20,5 +20,5 @@ autopep8 --in-place code/myfile.py
 
 
  mypy .                                                                                                                                                                                                                            
-  pylint $(git ls-files '*.py') --fail-under=8.0                                                                                                                                                                                    
-  pytest --cov=. --cov-fail-under=80          
+ pylint $(git ls-files '*.py') --fail-under=8.0                                                                                                                                                                                    
+ pytest --cov=. --cov-fail-under=80          

src/calculator.py

@@ -0,0 +1,4 @@
+"""A simple calculator module that provides basic operations."""
+def add(a: float, b: float) -> float:
+    """Add two numbers and return the result."""
+    return a + b

tests/test_calculator.py

@@ -1,19 +1,23 @@
-import pytest
+"""Unit tests for the calculator module."""
 
-from code.calculator import add
+from src.calculator import add
 
 
 def test_add_positive_numbers() -> None:
+    """Test adding two positive numbers."""
     assert add(2, 3) == 5
 
 
 def test_add_negative_numbers() -> None:
+    """Test adding two negative numbers."""
     assert add(-2, -3) == -5
 
 
 def test_add_mixed_numbers() -> None:
+    """Test adding a positive and a negative number."""
     assert add(-2, 5) == 3
 
 
 def test_add_floats() -> None:
+    """Test adding two floating-point numbers."""
     assert add(2.5, 3.5) == 6.0