unpack tuple of wrong size

[Tung Wai Yip]

I want to do

t = (1,2)
a,b = t # get a=1 and b=2

However when
t = (1,)
a,b=t

I got a "ValueError: unpack tuple of wrong size"

What I want is for a=1 and b=None. Is there a good way to do this?


Wai Yip Tung

 

[Andres Rosado-Sepulveda]

I want to do

t = (1,2)
a,b = t # get a=1 and b=2

However when
t = (1,)
a,b=t

I got a "ValueError: unpack tuple of wrong size"

What I want is for a=1 and b=None. Is there a good way to do this?

t = (1,None)
a,b = t

(1,) means that the tuple has only one element. Remember that tuples are
defined by the comma, except on those cases where it would be unclear
what the intention is.

--
Andres Rosado
Email: (e-mail address removed)
Homepage: http://andres980.tripod.com/

"Well, well. Look-who's-BACK!"
-- Megatron

 

[Duncan Booth]

However when
t = (1,)
a,b=t

I got a "ValueError: unpack tuple of wrong size"

What I want is for a=1 and b=None. Is there a good way to do this?

Probably the simplest is:

a, b = (t + (None, None))[:2]