On 27/03/2013 10:55, Dave Angel wrote:
On 03/27/2013 04:40 AM, Frank Millman wrote:
Hi all
This is a bit of trivia, really, as I don't need a solution.
But someone might need it one day, so it is worth mentioning.
>>> '{}'.format(True)
'True'
>>> '{:<10}'.format(True)
'1 '
One might want to format True/False in a fixed width string, but it
returns 1/0 instead. Is there any way to make this work?
Frank Millman
Easiest way is to surround the boolean variable with repr()
flag = True
'{:<10}'.format(repr(flag))
An alternative is to just use something like:
["False ","True "][flag]
making sure the two strings are of the same length.
(You didn't specify version, but I tested these with CPython 2.7.3)
Thanks, Dave. I am using CPython 3.3.0, which behaves the same for this
purpose.
Your solutions work, but in my case I am reading in data from a
database, so I want to create a format string, and then just call
print(format_string.format(*row))
so I can't easily modify the contents of a single column.
Peter's solution works perfectly for this scenario -
>>> '{!s:<10}'.format(True)
'True '
I had to look up what '!s' means. From the manual -
"Three conversion flags are currently supported: '!s' which calls str()
on the value, '!r' which calls repr() and '!a' which calls ascii()."
Another obscure but useful tip to store away somewhere.
Frank
--
http://mail.python.org/mailman/listinfo/python-list
