Pretty instance/dict/list/etc

pretty.py

# -*- coding: utf-8 -*-


def pretty(value, ind='  ', eol='\n', level=0):
    """Return a pretty representation of an object"""
    linesuffix = eol + ind * level
    lineprefix = linesuffix + ind
    level += 1
    if hasattr(value, '__class__') and '__dict__' in dir(value):
        value = value.__dict__
    if isinstance(value, dict):
        items = [
            lineprefix +
            repr(key) + ': ' + pretty(value[key], ind, eol, level)
            for key in value
        ]
        return '{%s}' % (','.join(items) + linesuffix)
    elif isinstance(value, list):
        items = [
            lineprefix + pretty(item, ind, eol, level)
            for item in value
        ]
        return '[%s]' % (','.join(items) + linesuffix)
    elif isinstance(value, tuple):
        items = [
            lineprefix + pretty(item, ind, eol, level)
            for item in value
        ]
        return '(%s)' % (','.join(items) + linesuffix)
    else:
        return repr(value)


if __name__ == '__main__':
    d = {'a': 1, 'b': 'abc', 'c':
        {'d': 4, 'e': (4, 5, 6)}, 'f': [{'g': 9}, 1.23]}
    print pretty(d)

    class test(object):

        def __init__(self):
            self.x = d

    t = test()
    print pretty(t)