[Python-ideas] string.format() default variable assignment

[Brett Cannon]

On Fri, Mar 1, 2013 at 11:55 AM, 김용빈 <kybinz at gmail.com> wrote:

> why we bother with '{variable}'.format(variable=variable) ?
> can we just '{variable}.format()' ?
>

variable = "Hello, World!"
print('{variable}'.format_map(locals()))


>
> if variable is exist, then assign it.
> if variable is not exist, then raise error
>
> I am not language expert. so sorry if this is not a good idea, or already
> discussed.
>

As Dustin said, Explicit is Better Than Implicit; you don't want a variable
to accidentally make your string formatting work by luck because you forgot
to pass in an argument you meant to but just so happened to have a variable
with the "right" name.
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