Скачать или смотреть 41.2 - String vs. Representation: Difference between Dunder Str() and Dunder Repr()

n Python, _str_ and _repr_ are special methods that provide different ways to represent objects as strings. These methods are used for creating human-readable or unambiguous string representations of objects, respectively.

If _repr_ is not defined for a class, Python will use the default implementation, which often includes the object's memory address.

It's common to implement at least the _repr_ method for custom classes, as it provides a standard representation for developers when working with instances of those classes. However, providing a meaningful _str_ method can enhance the readability of objects when displayed to end-users.

If only one of _str_ or _repr_ is defined, and the other is not, the defined method will be used for both functions. If both methods are defined, _str_ takes precedence in situations where a human-readable string representation is explicitly requested, such as when using print(). If _str_ is not available, _repr_ is used as a fallback.