Github user holdenk commented on the issue:
https://github.com/apache/spark/pull/16534
I'm not sure about `wraps` but with `update_wrapper`, I tested it in a
Jupyter kernel and it seems to give all of the docstring and signature
information without adding another function dispatch inside of PySpark UDFs.
In IPython
`
def foo(x):
"""Identity"""
return x
class F():
def __init__(self, f):
self.f = f
def __call__(self, x):
return f(x)
a = update_wrapper(F(foo), foo)`
results in a help string (from `?a`) of:
> Call signature: a(x)
Type: instance
Base Class: __main__.F
String form: <__main__.F instance at 0x7febb43d6ef0>
Docstring: Identity
Which seems like everything the current implementation does without adding
the indirection. Is this not the behavior you are seeing?
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