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On 25.02.15 12:25, Steven D'Aprano wrote:
On Wed, Feb 25, 2015 at 10:12:03AM +0200, Serhiy Storchaka wrote:
What if change default reprs of classes and functions to just full qualified name __module__ + '.' + __qualname__ (or just __qualname__ if __module__ is builtins)? This will look more neatly. And such reprs are evaluable.
Do you mean like this?
repr(int) => 'int'
repr(int.from_bytes) => 'int.from_bytes'
Yes, it is.
-1 on that idea.
The suggested repr gives no clue as to what kind of object they are. Are they functions, methods, classes, some kind of Enum-like constant or something special like None? That hurts the usefulness of object reprs at the interactive interpreter. And it leads to weirdness like this:
def spam(x): if not isinstance(x, int): raise TypeError('expected int, got %r' % x)
This is uncommon case and bugprone code. Don't write so. spam('x'*1000000) or spam(()) will produce unhelpful error messages.
Usually it is written as:
def spam(x): if not isinstance(x, int): raise TypeError('expected int, got %s' % type(x).__name__)