What's the use-case for this?
Have you looked into using functools.partial instead?
On Sat, 22 Apr 2023, 06:23 Samuel Muldoon, <muldoonsam...@gmail.com> wrote:
> Consider the following string:
>
> x = r"\mathjax{{color}}{{text}}"
>
> string `x` contains two parameters named `color` and the other named `text
> `.
>
> Currently, python requires that the string class method `str.format` contain
> key-word arguments for *all *parameters, not just *one* parameter
>
> result = r"\mathjax{{color}}{{text}}".format(color = "blue" , text =
> "Spanish")
>
> result = "\mathjax{blue}{Spanish}"
>
> Can we change str.format so that it is possible to change only one string
> parameter, but leave the other parameters alone?
>
> # pfr is partially_formatted_result
>
> pfr = r"\mathjax{{color}}{{text}}".format(color = "blue") # ERROR!
> missing parameter `text`
>
> result = r"\mathjax{{color}}{{text}}".format(text = "Spanish") # ERROR!
> missing parameter `color`
>
> The implementation requires fewer than ten lines of code in python, probably
> less than fifty lines in C, or a different implementation language.
>
> class str:
> def format(self, **kwargs):
> for key in kwargs:
> x = "{"+key+"}"
> ostr = kwargs[key].join(self.split(x))
> return ostr # output string
>
> As an example, everywhere a string contained `{text}` it will now say
> `*Spanish*` .
>
>
> *Samuel Muldoon*
>
> *(720) 653 -2408*
>
> *muldoonsam...@gmail.com <muldoonsam...@gmail.com>*
>
>
>
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