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.

You always want to use repr() [or %r formatting character, equivalently] inside __repr__ implementation, or you’re defeating the goal of repr. You want to be able to differentiate …

The text single ' and double " quotes, when run through repr, includes escapes for one kind of quote. Of course it does, otherwise it wouldn't be a valid string literal by Python rules.

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.

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 …

Jun 13, 2016 · Ещё раз: потребитель repr() —программист Питона, который видит это представление в REPL или debugger.

Jun 3, 2017 · Called by the repr() built-in function to compute the “official” string representation of an object. If at all possible, this should look like a valid Python expression that could be used …

If someone writes a class in python, and fails to specify their own __repr__() method, then a default one is provided for them. However, suppose we want to write a function which has the …

May 21, 2025 · repr (C) is for calling external C functions. repr (packed) to read structs from file or network. For example with File::read_exact. You don't need them for usual structures.

As Andrew Johnson said, JSON.stringify is probably the closest you can get out of the box. One common strategy for a repr is to output runnable Python code. If you want to do this, lave …