Time for action – comparing strings

Let's compare strings. Both strings are the word "NumPy":

  1. Call the assert_string_equal() function to compare a string with itself. This test, of course, should pass:
    print("Pass", np.testing.assert_string_equal("NumPy", "NumPy"))

    The test passes:

    Pass None
  2. Call the assert_string_equal() function to compare a string with another string with the same letters, but different casing. This test should throw an exception:
    print("Fail", np.testing.assert_string_equal("NumPy", "Numpy"))

    The test raises an error:

    Fail
Traceback (most recent call last):
  …
    raise AssertionError(msg)
AssertionError: Differences in strings:
- NumPy?    ^
+ Numpy?    ^

What just happened?

We compared two strings with the assert_string_equal() function. The test threw an exception when the casing did not match.

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