LOLPython!

This is a copy of LOLPython by Andrew Dalke that has been updated for compatibility with Python 3.5. async/await, bytestring literals and bitwise operators (which were lacking in the original version) are now implemented. The syntax for these can be found in the unit tests.

Unfortunately, this copy of LOLPython is not entirely backward-compatible with the original: VISIBLE and COMPLAIN now require ! or OK to close them, because print() is a function in Python 3. The original readme (with code examples updated accordingly) follows:

WHATZ LOLPython?

Example code to generate all Fibonacci numbers less than a given value of N. Max value is 100 if N is not given on the command line. Idea derives from original lolcode implementation by Kieran O'Niell.

IN MAI datetime GIMME date LIKE DATE

SO IM LIKE FIBBING WIT N OK?
    LOL ITERATE FIBONACCI TERMS LESS THAN N /LOL
    SO GOOD N BIG LIKE EASTERBUNNY
    BTW, FIBONACCI LIKE BUNNIES! LOL
    U BORROW CHEEZBURGER
    U BORROW CHEEZBURGER
    I CAN HAZ CHEEZBURGER
    HE CAN HAZ CHEEZBURGER
    WHILE I CUTE?
        I AND HE CAN HAZ HE AND I ALONG WITH HE
        IZ HE BIG LIKE N?
            KTHXBYE
        U BORROW HE

IZ __name__ KINDA LIKE "__main__"?
    COMPLAIN "NOW IZ" AND DATE OWN today THING!
    IZ BIGNESS ARGZ OK KINDA LIKE 1?
        N CAN HAS 100
    NOPE?
        N CAN HAS NUMBR ARGZ LOOK AT 1!!
    GIMME EACH I IN UR FIBBING WIT N OK?
        VISIBLE I!

and in action (you must first install the most excellent PLY package):

% python lolpython.py fib.lol 60
NOW IZ 2016-05-15
1
1
2
3
5
8
13
21
34
55

It works by coverting the LOLPython code into Python. The converted Fibonacci in Python is:

# Compiled by LOLPython to Python converter version 1.0
# Written by Andrew Dalke, who should have been working on better things.


# sys is used for COMPLAIN and ARGZ
import sys as _lol_sys
# printerr is used because it lets the old COMPLAIN syntax still work
printerr = lambda *args, **kwargs: print(*args, **kwargs, file=_lol_sys.stderr)

from datetime import date as DATE

def FIBBING ( N ) :
    'ITERATE FIBONACCI TERMS LESS THAN N'
    assert N >= 0
    # BTW, FIBONACCI LIKE BUNNIES! LOL
    yield 1
    yield 1
    I = 1
    HE = 1
    while True:
        I , HE = HE , I + HE
        if HE >= N :
            break
        yield HE

if __name__ == '__main__' :
    printerr('NOW IZ' , DATE . today ())
    if len(_lol_sys.argv) == 1 :
        N = 100
    else :
        N = int(_lol_sys.argv[ 1 ])
    for I in FIBBING ( N ) :
        print(I )

# The end.

Using LOLPython on the command line

Run a program from stdin

% echo "VISIBLE 'HAI WORLD!'!" | python lolpython.py
HAI WORLD!
%

Translate a program from stdin into Python on stdout

% echo "COMPLAIN 'HAI WORLD!'!" | python lolpython.py --convert
# Compiled by LOLPython to Python converter version 1.0
# Written by Andrew Dalke, who should have been working on better things.


# sys is used for COMPLAIN and ARGZ
import sys as _lol_sys
# printerr is defined in order to let the COMPLAIN syntax work in Py3k
printerr = lambda *args, **kwargs: print(*args, **kwargs, file=_lol_sys.stderr)

printerr('HAI WORLD!')

# The end.

Specify the LOLPython program filename on the command line

% cat count_letters.lol
LETTERZ CAN HAS INVISIBLE BUCKET
F CAN HAS open WIT "count_letters.lol"!
S CAN HAS F OWN read THING
GIMME EACH C IN THE S?
    N CAN HAS LETTERZ OWN get WIT C AND 0! ALONG WITH CHEEZBURGER
    LETTERZ LET THE C OK CAN HAS N
GIMME EACH C IN THE sorted WIT LETTERZ OK?
    VISIBLE repr WIT C! AND LETTERZ LOOK AT C!!
% python lolpython.py count_letters.lol | head
'\n' 8
' ' 67
'!' 4
'"' 2
'.' 1
'0' 1
'?' 2
'A' 16
'B' 4
'C' 15

Translate one or more LOLPython program files into Python files

% python lolpython.py --convert count_letters.lol
% cat count_letters.py
# Compiled by LOLPython to Python converter version 1.0
# Written by Andrew Dalke, who should have been working on better things.


# sys is used for COMPLAIN and ARGZ
import sys as _lol_sys
# printerr is defined in order to let the COMPLAIN syntax work in Py3k
printerr = lambda *args, **kwargs: print(*args, **kwargs, file=_lol_sys.stderr)

LETTERZ = {}
F = open ( 'count_letters.lol' )
S = F . read ()
for C in S :
    N = LETTERZ . get ( C , 0 ) + 1
    LETTERZ [ C ] = N
for C in sorted ( LETTERZ ) :
    print(repr ( C ) , LETTERZ [ C ])

# The end.

RoadrunnerWMC / LOLPython-3