问题
def get():
...
...
return x,y,z
a,b,c = get()
i don't need b, c is there a solution to ignore them (something like don't care)
回答1:
The recommended way of doing this is to use the _ variable name, as indicated by Abdul Niyas P M, this will not store the values captured by the _.
x, _, z = 1, 2, 3 # if x and z are necessary
# or
x, *_ = 1, 2, 3 # if only x is necessary
回答2:
You might have noticed that if you just do something like a = get() Python will throw all 3 values into the variable 'a' as a tuple.
The best and simplest solution possible at the moment (in the current python version 3.8) is to simply create a second variable to throw stuff in and not ever use that variable. For example:
a, b = get()
However some people like to use a variable named *_ to indicate that this value is trash and needs to be ignored (The variable name adds nothing special, its just a convention to indicate we wont use it source)
a, *_ = get()
回答3:
Let's say, within the returned tuple of values, you are interested only in the k th value.
You could then do:
a = get()[k]
assuming of course, that we're counting k from 0 (and not from 1)
来源：https://stackoverflow.com/questions/65302341/how-to-ignore-the-rest-of-the-parameters-that-return-by-the-function