Pseudocode¶
Python ↔ OCR Exam Reference Language ↔ AQA pseudocode, for the GCSE subset. Anything that cannot be translated is kept as a comment in the output and listed; nothing is dropped silently.
The source is on the left, numbered, with the language it is in; the translation is on the right, numbered too, with what could not be translated listed under it. Choose a file from the Library or with Browse…, or Paste instead.
The subset: variables, arithmetic (DIV, MOD, ^), comparisons,
AND/OR/NOT, if/elif/else, count loops, for-each, while, do…until,
functions and procedures, lists and indexing, string length / substring /
upper / lower, casts, random, basic file methods, comments. ERL and the
other names are in the Glossary.
The panel writes the translation as <stem>.ocr.txt, <stem>.aqa.txt or
<stem>.py unless Save output is set to Don't save; the terminal commands
only write with --save (Outputs).
Which language the input is in is worked out from the code itself
unless you say: def, elif and lines ending in : mean Python;
endif, next i, then, procedure mean OCR ERL; ←, OUTPUT,
USERINPUT, ENDWHILE mean AQA. Words inside strings and comments do not
count. When the code alone does not settle it, the file name is tried
(.py is Python, .aqa or .ocr anywhere in the name names that board).
The run log says what was decided ("Treated input as AQA pseudocode
(guessed from the code)") and the result strip ends input read as AQA
pseudocode. Two cases stop with a message instead
of guessing wrong: code with nothing to go on (x = 5 is all three
languages), and code that already looks like the language asked for, such
as to-ocr sheet.txt on an OCR sheet. Both say which --from to pass. On
the command line --from python|ocr|aqa always wins. In the panel,
Language (under the file) switches to the language it guessed as soon as
you choose a file or paste code, so you see the guess before you translate,
and you can set it yourself; it shows Guess only when there is nothing to
go on. To is the target; if the code is already in that language, To
moves to another one.
staff pseudocode to-ocr program.py
staff pseudocode to-aqa program.py --save --out ./out
staff pseudocode to-python sheet.ocr.txt
staff pseudocode to-ocr notes.txt --from aqa # when the guess needs overriding