PyTest expected exceptions (text changed)

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examples/pytest/test_exceptions_text_changed.py

import pytest

def divide(a, b):
    if b == 0:
        raise ValueError('Cannot divide by Null')
    return a / b

def test_zero_division():
    with pytest.raises(ValueError) as e:
        divide(1, 0)
    assert str(e.value) == 'Cannot divide by Zero'