Questions tagged [python-plyplus]
5 questions
1
vote
0 answers
grammar (with plyplus) for a small language for generating python functions
I designed a toy language :
# comments
n = 2 #an integer
k = 3.14 # a float
f(x): # a function
return (x-k)^n
g(z): #another function
return max(z-2.9, 0.1) # max should be understood
h(x,y: # another function ; note that function can call…
EricFlorentNoube
- 161
- 8
0
votes
0 answers
"SyntaxError: Can't build lexer" plyplus
I am doing a High Level Language, and I cannot understand why I get this error when trying to generate a lexer for it.
This is my code:
start : codigo;
codigo : funcion* home;
funcion : DEF ID PL (ID (',' ID)*)* PR LLL expresion LLR;
home : HOME…
PonoPono
- 1
0
votes
1 answer
__init__(self, grammar, **options) and I pass (grammar_string,myoptdict): TypeError: 2 args, 3 given
I am using plyplus and just trying to get the debug option turned on.
The Grammar class is defined like:
class Grammar(object):
def __init__(self, grammar, **options)
and I am invoking it via
options = { 'debug' : True }
Grammar(long_string,…
Mark McWiggins
- 621
- 6
- 20
0
votes
1 answer
Plyplus gives syntax error because of specific keywords?
I am using plyplus to design a simple grammar and I have been struggling with some weird error for a while. Please bear in mind I am a newbie. Here is a piece of code that reproduces the issue:
from plyplus import Grammar
list_parser = Grammar("""
…
-1
votes
2 answers
Python for creating a set operations Calculator
I'm trying to create a calculator, not for numbers, but for set operations.
To illustrate the concept lets say you have a file with two columns.
keyword, userid
hello , john
hello , alice
world , alice
world , john
mars , john
pluto ,…
broccoli
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