python string formatting [duplicate]

Question

I need some help with the Python's new string formatter. Basically, I want the outer curly braces to not escape the string replacement field.

This works:

foo = 'bar'
print '{%s}' % foo

But, this doesn't:

foo = 'bar'
print('{{0}}'.format(foo))

Desired output:

'{bar}'

Greg Hewgill · Accepted Answer · 2011-04-04 01:19:45Z

7

It looks like you want:

>>> foo = 'bar'
>>> print('{{{0}}}'.format(foo))
'{bar}'

The outer pair of doubled {{ and }} are copied literally to the output, leaving {0} to be interpreted as a substitution.

answered Apr 4, 2011 at 1:19

Greg Hewgill

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1 Comment

Ha, sometimes I tend to over complicate things. Thanks.

bradley.ayers · Accepted Answer · 2011-04-04 01:19:24Z

4

{{ is an escaped {, but you still need {0} as the placeholder, thus:

print('{{{0}}}'.format('bar'))

answered Apr 4, 2011 at 1:19

bradley.ayers

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