To use this command in a batch file, replace every occurrence of %f with %%f. These strings may contain replacement fields, which are expressions delimited by curly braces {} While other string literals always have a constant value, formatted strings are really expressions evaluated at run time Some examples of formatted string. But they don't seem to have a lot of advantages, and, as you've said, they unnecessarily break compatibility with python < 3.6 However, i would argue that for the example the op gave (which may or may not be indicative of op's actual use case), none of these ideas should actually be used
There are two switches for the if condition which check for a file What is the difference between those two? When using an f in front of a string, all the variables inside curly brackets are read and replaced by their value. Reddit is a network of communities where people can dive into their interests, hobbies and passions There's a community for whatever you're interested in on reddit. A few of these don't do anything interesting, or even anything visible
There is no difference between %f and %lf in the printf family The iso c standard (all references within are from c11), section 7.21.6.1 the fprintf function, paragraph /7 states, for the l modifier (my emphasis) Specifies that a following d, i, o, u, x, or x conversion specifier applies to a long int or unsigned long int argument That a following n conversion specifier applies to a pointer. [gmail]/ is attempting to use double quotes inside of a f that uses double quotes, which you can't do
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