On Thu, 17 Aug 2017 11:07 am, Stefan Ram wrote: > Steve D'Aprano <steve+pyt...@pearwood.info> writes: >>On Thu, 17 Aug 2017 08:29 am, Mok-Kong Shen wrote: >>>In the first case, any modification of the formal parameter >>Technically, you cannot modify the formal parameter, because the formal >>parameter is just a name unbound to any value. It's just the label in the >>function definition. You need to have actually passed a value as argument to >>the function before there is anything to modify. > > So, when an argument is actually passed, then the parameter > can be modified? It seems Mok-Kong Shen was writing about > this case.
I would say that the argument is modified. https://docs.python.org/3/faq/programming.html#faq-argument-vs-parameter "Parameters are defined by the names that appear in a function definition, whereas arguments are the values actually passed to a function when calling it." See also: https://docs.python.org/3/glossary.html#term-parameter https://docs.python.org/3/glossary.html#term-argument -- Steve “Cheer up,” they said, “things could be worse.” So I cheered up, and sure enough, things got worse. -- https://mail.python.org/mailman/listinfo/python-list
