New issue 2029: lambdas not is not JSON serializable
https://bitbucket.org/pypy/pypy/issue/2029/lambdas-not-is-not-json-serializable
gjvc:
This code runs fine in CPython 2.7, but not in pypy
```
#!python
#! /usr/bin/env python
import collections
import json
class objdict( collections.defaultdict ):
def __getattr__( self, key ):
try:
return self.__dict__[ key ]
except KeyError:
return self.__getitem__( key )
__setattr__ = lambda self, key, value: self.__setitem__( key, value )
def objtree():
return objdict(objtree)
obj = objtree()
print json.dumps( obj, indent=4 )
obj.x.y.z = 4
print json.dumps( obj, indent=4 )
obj.x.y = 3
print json.dumps( obj, indent=4 )
obj.x = 2
print json.dumps( obj, indent=4 )
del obj[ 'x' ]
print json.dumps( obj, indent=4 )
```
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