Github user josepablocam commented on the pull request:
https://github.com/apache/spark/pull/7430#issuecomment-122035440
@MechCoder I'm not as familiar with Python, so this might be a horrid
suggestion, but one option would be to require users to pass in a named
function, rather than a lambda. cPickle can handle named functions (but not
lambdas). I suspect there is a better suggestion out there for this though...
```
>>> import pickle
>>> from scipy.stats.distributions import norm
>>> def mynorm(x):
... norm.cdf(x)
...
>>> pickle.dumps(mynorm)
'c__main__\nmynorm\np0\n.'
```
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