Added set-like methods to Session #984
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| @@ -18,6 +18,9 @@ Backward incompatible changes | |||
| New features | |||
| ^^^^^^^^^^^^ | |||
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| * implemented :py:obj:`Session.union()`, :py:obj:`Session.intersection()` and :py:obj:`Session.difference()` to combine | |||
| several sessions into one using set operations (closes :issue:`22`). | |||
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Update the tutorial ?
During the last few months, I had the opportunity to discuss with some of our (unexperimented) users. They truly consider the tutorial as a Bible (not sure it's a good thing...).
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Yes, I should and I will. I don't like doing that but if it's not in the tutorial, it might as well not exist for some (most?) of our users.
| @@ -1388,6 +1388,93 @@ def apply(self, func, *args, **kwargs) -> 'Session': | |||
| kind = kwargs.pop('kind', Array) | |||
| return Session([(k, func(v, *args, **kwargs) if isinstance(v, kind) else v) for k, v in self.items()]) | |||
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| def union(self, other): | |||
| """Returns session with the (set) union of this session objects with other objects. | |||
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Add a warning telling that using this method on two CheckedSession objects will return a normal Session.
| return self[[k for k in self.keys() if k in other_keys]] | ||
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| def difference(self, other): | ||
| """Returns session with the (set) difference of this session objects and other objects. |
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same remark as for union()
| return res | ||
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| def intersection(self, other): | ||
| """Returns session with the (set) intersection of this session objects with other objects. |
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same remark as for union()
| >>> s1.intersection(['arr2', 'arr1']) | ||
| Session(arr1, arr2) | ||
| """ | ||
| other_keys = set(other.keys() if isinstance(other, Session) else other) |
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Have you tested with CheckedSession objects ?
CheckedSession inherits from Session so I see no reason it doesn't work but we never know.
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No, I didn't think of that. This is a VERY old branch I cleaned up and documented in the train. Didn't think of CheckedSession since they didn't exist at the time 😉.
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