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Suppose I have a function:
def f():
...
...
...
return a,b,c
and I want to get only b in output of the function. Which assignment I have to use?
Thanks.
576
In Python, you can return multiple values by simply return them separated by commas. In Python, comma-separated values are considered tuples without parentheses, except where required by syntax. For this reason, the function in the above example returns a tuple with each value as an element.
You can use x = func()[0] to return the first value, x = func()[1] to return the second, and so on. If you want to get multiple values at a time, use something like x, y = func()[2:4] . This should be the accepted answer.
You can unpack the returned tuple into some dummy variables:
_, keep_this, _ = f()
It doesn't have to be _, just something obviously unused.
(Don't use _ as a dummy name in the interactive interpreter, there it is used for holding the last result.)
Alternatively, index the returned tuple:
keep_this = f()[1]
def f():
return 1,2,3
here, f() returns a tuple (1,2,3) so you can do something like this:
a = f()[0]
print a
1
a = f()[1]
print a
2
a = f()[2]
print a
3
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