Check if object is file-like in Python

Question

File-like objects are objects in Python that behave like a real file, e.g. have a read() and a write method(), but have a different implementation. It is and realization of

Answer 1

It is generally not good practice to have checks like this in your code at all unless you have special requirements.

In Python the typing is dynamic, why do you feel need to check whether the object is file like, rather than just using it as if it was a file and handling the resulting error?

Any check you can do is going to happen at runtime anyway so doing something like if not hasattr(fp, 'read') and raising some exception provides little more utility than just calling fp.read() and handling the resulting attribute error if the method does not exist.