You can also format numbers with an underscore separator instead of commas (`format(number, '_')`). That has the advantage of being both quickly human-eye-parsable AND python parsable, e.g. you can copy and paste the output right back into the REPL (and quite a few other languages also understand numbers with underscore separators).
Also, since the variable *named* underscore is the last result shown in the REPL, you can reformat the last output with underscore separators by typing `f"{_:_}"`, which is silly and confusing syntax but often pretty convenient.
Comment
Cheers! This is a good point. Practical.
Parent comment
You can also format numbers with an underscore separator instead of commas (`format(number, '_')`). That has the advantage of being both quickly human-eye-parsable AND python parsable, e.g. you can copy and paste the output right back into the REPL (and quite a few other languages also understand numbers with underscore separators). Also, since the variable *named* underscore is the last result shown in the REPL, you can reformat the last output with underscore separators by typing `f"{_:_}"`, which is silly and confusing syntax but often pretty convenient.