That was not a flippant remark. Lines of code are clauses not sentences. This is also true of poetry. A sentence is more akin to a stanza in poetry, and a fun

That was not a flippant remark. Lines of code are clauses not sentences. This is also true of poetry. A sentence is more akin to a stanza in poetry, and a function in code. While I could entertain an argument for lines ending in commas and for functions to end with periods there is no reasonable argument for lines to end with periods (is there a language where a line is equal to a function?). APL, and to some degree Perl, are examples of languages where to you might consider a period half-way through a line.