Since Python 3.3, types.MappingProxyType replaces the old types.DictProxyType from Python 2, but now it can be instantiated. However, pretty printing it is showing only its unsorted oneliner repr(obj) result.
In [1]: import types, string
In [2]: types.MappingProxyType({k: k for k in string.ascii_letters})
Out[2]: mappingproxy({'W': 'W', 'L': 'L', 'f': 'f', 'o': 'o', 'p': 'p', 'J': 'J', 'k': 'k', 'r': 'r', 'M': 'M', 'b': 'b', 'u': 'u', 'U': 'U', 'S': 'S', 'w': 'w', 's': 's', 'G': 'G', 'l': 'l', 'I': 'I', 'R': 'R', 'H': 'H', 'e': 'e', 'g': 'g', 'K': 'K', 'v': 'v', 't': 't', 'B': 'B', 'x': 'x', 'n': 'n', 'Y': 'Y', 'O': 'O', 'c': 'c', 'F': 'F', 'z': 'z', 'd': 'd', 'a': 'a', 'q': 'q', 'm': 'm', 'Q': 'Q', 'j': 'j', 'h': 'h', 'X': 'X', 'i': 'i', 'P': 'P', 'V': 'V', 'N': 'N', 'E': 'E', 'y': 'y', 'D': 'D', 'Z': 'Z', 'C': 'C', 'A': 'A', 'T': 'T'})Tested in Python 3.5.2, IPython 5.0.0. I'm fixing this one myself due to #9776
Since Python 3.3,
types.MappingProxyTypereplaces the oldtypes.DictProxyTypefrom Python 2, but now it can be instantiated. However, pretty printing it is showing only its unsorted onelinerrepr(obj)result.Tested in Python 3.5.2, IPython 5.0.0. I'm fixing this one myself due to #9776