The multilingual REPL (Read-Eval-Print Loop) is a language-switching interactive environment for writing and testing programs in any of the 17 supported languages.
Starting the REPL
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| # Default (English)
python -m multilingualprogramming repl
# Start in a specific language
python -m multilingualprogramming repl --lang fr
python -m multilingualprogramming repl --lang ja
python -m multilingualprogramming repl --lang ar
# With Python preview (show generated Python alongside output)
python -m multilingualprogramming repl --show-python
# Short command alias
multilg repl --lang de
|
REPL Commands
| Command |
Description |
:help |
Show all available REPL commands |
:language <code> |
Switch active language (e.g., :language fr) |
:python |
Toggle Python preview mode (show generated Python) |
:reset |
Reset interpreter state (clear all variables/functions) |
:kw |
List keywords for the current language |
:kw XX |
List keywords for language code XX |
:ops |
List operators for the current language |
:ops XX |
List operators for language code XX |
:q |
Quit the REPL |
Example Sessions
English Session
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| multilingual> let x = 10
multilingual> let y = 25
multilingual> print(x + y)
35
multilingual> def square(n):
... return n * n
...
multilingual> print(square(7))
49
|
Language Switching
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| multilingual [en]> :language fr
Switched to: French (fr)
multilingual [fr]> soit a = 5
multilingual [fr]> soit b = 3
multilingual [fr]> afficher(a + b)
8
multilingual [fr]> :language ja
Switched to: Japanese (ja)
multilingual [ja]> 変数 値 = 42
multilingual [ja]> 表示(値)
42
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Python Preview Mode
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| multilingual [en]> :python
Python preview: ON
multilingual [en]> let items = [1, 2, 3]
# Python: items = [1, 2, 3]
multilingual [en]> for i in items:
... print(i * 2)
# Python:
# for i in items:
# print(i * 2)
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6
|
Inspecting Keywords
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| multilingual [fr]> :kw
Keywords for French (fr):
if → si
elif → sinonsi
else → sinon
for → pour
in → dans
while → tantque
def → déf
return → retourner
let → soit
class → classe
...
multilingual> :kw ar
Keywords for Arabic (ar):
if → إذا
for → لكل
while → بينما
def → دالة
let → ليكن
...
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Language Codes
| Language |
Code |
Example keyword |
| English |
en |
if |
| French |
fr |
si |
| Spanish |
es |
si |
| German |
de |
wenn |
| Italian |
it |
se |
| Portuguese |
pt |
se |
| Polish |
pl |
jezeli |
| Dutch |
nl |
als |
| Swedish |
sv |
om |
| Danish |
da |
hvis |
| Finnish |
fi |
jos |
| Hindi |
hi |
अगर |
| Arabic |
ar |
إذا |
| Bengali |
bn |
যদি |
| Tamil |
ta |
என்றால் |
| Chinese |
zh |
如果 |
| Japanese |
ja |
もし |
Smoke Tests
Quick validation snippets to verify a language is working correctly.
Snippet A — Variables and Print
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| <LET> x = 2
<LET> y = 3
<PRINT>(x + y)
|
Replace <LET> and <PRINT> with the language-specific keywords. Expected output: 5
Snippet B — For Loop
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| <LET> total = 0
<FOR> i <IN> <RANGE>(4):
total = total + i
<PRINT>(total)
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Expected output: 6
English:
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| let x = 2
let y = 3
print(x + y)
let total = 0
for i in range(4):
total = total + i
print(total)
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French:
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| soit x = 2
soit y = 3
afficher(x + y)
soit total = 0
pour i dans intervalle(4):
total = total + i
afficher(total)
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German:
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| sei x = 2
sei y = 3
ausgeben(x + y)
sei total = 0
für i in bereich(4):
total = total + i
ausgeben(total)
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Japanese:
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| 変数 x = 2
変数 y = 3
表示(x + y)
変数 合計 = 0
毎 i 中 範囲(4):
合計 = 合計 + i
表示(合計)
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Arabic:
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| ليكن x = 2
ليكن y = 3
اطبع(x + y)
ليكن المجموع = 0
لكل i في مدى(4):
المجموع = المجموع + i
اطبع(المجموع)
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Hindi:
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| मान x = 2
मान y = 3
छापो(x + y)
मान योग = 0
के_लिए i में परास(4):
योग = योग + i
छापो(योग)
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REPL Tips
- Multi-line input: continue with
... for blocks (if, for, def, class)
- Variables and functions defined in one language persist across
:language switches (identifiers stay, keywords change)
:reset clears all state including variables and function definitions- Use
:python to understand what code is actually being run