formatting python string that contains ${}

Question

I need to print out a string that contains ${} with format() method

For example, I'd like to print out

"hello ${a} hello"

using this python code

print "{string1} ${a} {string1}".format(string1="hello")

However, I get KeyError'a', as format() expects an input string for {a}. How can I teach format() to ignore ${a}?

Amit · Accepted Answer · 2012-11-05 00:32:10Z

3

You need to double the { and } to {{ to }}:

print "{string1} ${{a}} {string1}".format(string1="hello")

answered Nov 5, 2012 at 0:32

Amit

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1 Comment

Doug Over a year ago

This works well when you want to print an equal number of open and close curly braces, but python chokes on it if you only want to print an a single open brace. '{{{}}' does not work. In this case I just added the single curly brace as an additional parameter to my .format() and injected into the string that way.

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