Are repr and str always identical on Pythons builtin numeric types?

Question

Are repr and str identical on Pythons built-in numeric types (int, bool, float, and complex), or are there (esoteric?) situations where the two may yield different results?

Related questions on SO (such as this one) focus on how __repr__ and __str__ may be implemented differently, and return different values for strings, but I can't find anything on the actual implementation on numbers.

The question was closed as being a duplicate, but the linked post does not answer my question, which is specifically about the `__repr__` and `__str__` methods on `int`, `bool`, `float`, and `complex`. — gerrit, Nov 20 '12 at 12:58

score 3 · Accepted Answer · answered Nov 20 '12 at 10:59

Your primary source of information on this is http://hg.python.org/cpython/file/tip/Objects For example, in boolobject.c:

PyTypeObject PyBool_Type = {
    ...stuff...

    bool_repr,                                  /* tp_repr */

    ...stuff...

    bool_repr,                                  /* tp_str */

so yes, they're guaranteed to be the same.

For floats, float_repr is different from float_str and depends on sys.float_repr_style.

Are repr and str always identical on Pythons builtin numeric types?

1 Answers1

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