'What does "gather" mean in computing?

I'm learning Python.

In "Python For Everyone" by Charles Severance, in the Glossary section for Tuples I came across the following definition:

Gather: The operation of assembling a variable-length argument tuple.

Right now this is Greek for me, and the vocable isn't mentioned anywhere else in the book I'm learning from. Not even with examples.

I would like to know what does it mean.



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