Python: is using “..%(var)s..” % locals() a good practice?

Question

I discovered this pattern (or anti-pattern) and I am very happy with it.

I feel it is very agile:

def example():
    age = ...
    name = ...
    pri         


        

Answer 1

Regarding the "cousin", instead of obj.__dict__, it looks a lot better with new string formatting:

def example2(obj):
    print "The file at {o.path} has {o.length} bytes".format(o=obj)

I use this a lot for repr methods, e.g.

def __repr__(self):
    return "{s.time}/{s.place}/{s.warning}".format(s=self)