The returns of repr() and str() are identical for int x, but there's a difference between the return values for str y -- one is formal and the other is informal.

The idea of repr is to give a string which contains a series of symbols which we can type in the interpreter and get the same value which was sent as an argument to repr.

return f"{self.__class__!s}({self.__dict__!r})" would have been too dangerous (for example, too easy to get into infinite recursion if objects reference each other). So Python cops out. Note that there is one …

__str__ and __repr__ are both methods for getting a string representation of an object. __str__ is supposed to be shorter and more user-friendly, while __repr__ is supposed to provide more detail. …

Feb 7, 2012 · If anyone, after reading those 2 answers here, is still wondering what to use !r or repr for, I'd like to shed some light on my own observation of our huge corporate shared library: After …

In short repr should return a string that can be copy-pasted to rebuilt the exact state of the object, whereas str is useful for logging and observing debugging results.

Aug 5, 2015 · The __repr__ function is called by repr() internally. repr() is called when you are printing the object directly , and the class does not define a __str__() . From documentation - object.__repr__ …

Called by the repr () built-in function and by string conversions (reverse quotes) to compute the “official” string representation of an object. If at all possible, this should look like a valid Python expression …

Solo tienes que iterar sobre cada item del atributo de instancia conjunto, llamar a su método __str__, mejor a través del builtin str() y concatenar las cadenas interponiendo un salto de línea entre cada …

What are the best practices in such situations? Accept that the repr might often be a very long string? Are there potential issues related to this (debugger UI, etc.)? Should I implement some kind of …