Give List to Format String - How To

[gregpinero]

I might just be being dumb tonight, but why doesn't this work:

'%s aaa %s aa %s' % ['test' for i in range(3)]

Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: not enough arguments for format string

(I'm in Python 2.4 if that matters)

Thanks,

Greg

 

[gregpinero]

I might just be being dumb tonight, but why doesn't this work:

'%s aaa %s aa %s' % ['test' for i in range(3)]

Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: not enough arguments for format string

Ah it just needs a tuple. I posted too soon I guess.

'%s aaa %s aa %s' % tuple(['test' for i in range(3)])

'test aaa test aa test'

-Greg

 

[Carsten Haese]

I might just be being dumb tonight, but why doesn't this work:

'%s aaa %s aa %s' % ['test' for i in range(3)]

Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: not enough arguments for format string

To format multiple objects, the right operand must be a tuple. A list is
not a tuple, so '%' only sees one argument. You want something like
this:
'test aaa test aa test'

HTH,

 

[Ben Finney]

I might just be being dumb tonight, but why doesn't this work:

Congratulations for finding the answer quickly, and thank you for
letting us know the answer.

In future, if you want to ask "why doesn't this work", please show us
all three of: the example code, the actual behaviour, and the expected
behaviour. "Doesn't work" is not a substitute for the last two.