telegram-bot-systemy-dialogowe/eliza.py

216 lines
6.7 KiB
Python
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2021-03-20 18:07:03 +01:00
import random
import re
try: input = raw_input
except NameError: pass
class Key:
def __init__(self, word, weight, decomps):
self.word = word
self.weight = weight
self.decomps = decomps
class Decomp:
def __init__(self, parts, save, reasmbs):
self.parts = parts
self.save = save
self.reasmbs = reasmbs
self.next_reasmb_index = 0
class Eliza:
def __init__(self):
self.initials = []
self.finals = []
self.quits = []
self.pres = {}
self.posts = {}
self.synons = {}
self.keys = {}
self.memory = []
def load(self, path):
key = None
decomp = None
with open(path) as file:
for line in file:
if not line.strip():
continue
tag, content = [part.strip() for part in line.split(':')]
if tag == 'initial':
self.initials.append(content)
elif tag == 'final':
self.finals.append(content)
elif tag == 'quit':
self.quits.append(content)
elif tag == 'pre':
parts = content.split(' ')
self.pres[parts[0]] = parts[1:]
elif tag == 'post':
parts = content.split(' ')
self.posts[parts[0]] = parts[1:]
elif tag == 'synon':
parts = content.split(' ')
self.synons[parts[0]] = parts
elif tag == 'key':
parts = content.split(' ')
word = parts[0]
weight = int(parts[1]) if len(parts) > 1 else 1
key = Key(word, weight, [])
self.keys[word] = key
elif tag == 'decomp':
parts = content.split(' ')
save = False
if parts[0] == '$':
save = True
parts = parts[1:]
decomp = Decomp(parts, save, [])
key.decomps.append(decomp)
elif tag == 'reasmb':
parts = content.split(' ')
decomp.reasmbs.append(parts)
def _match_decomp_r(self, parts, words, results):
if not parts and not words:
return True
if not parts or (not words and parts != ['*']):
return False
if parts[0] == '*':
for index in range(len(words), -1, -1):
results.append(words[:index])
if self._match_decomp_r(parts[1:], words[index:], results):
return True
results.pop()
return False
elif parts[0].startswith('@'):
root = parts[0][1:]
if not root in self.synons:
raise ValueError("Unknown synonym root {}".format(root))
if not words[0].lower() in self.synons[root]:
return False
results.append([words[0]])
return self._match_decomp_r(parts[1:], words[1:], results)
elif parts[0].lower() != words[0].lower():
return False
else:
return self._match_decomp_r(parts[1:], words[1:], results)
def _match_decomp(self, parts, words):
results = []
if self._match_decomp_r(parts, words, results):
return results
return None
def _next_reasmb(self, decomp):
index = decomp.next_reasmb_index
result = decomp.reasmbs[index % len(decomp.reasmbs)]
decomp.next_reasmb_index = index + 1
return result
def _reassemble(self, reasmb, results):
output = []
for reword in reasmb:
if not reword:
continue
if reword[0] == '(' and reword[-1] == ')':
index = int(reword[1:-1])
if index < 1 or index > len(results):
raise ValueError("Invalid result index {}".format(index))
insert = results[index - 1]
for punct in [',', '.', ';']:
if punct in insert:
insert = insert[:insert.index(punct)]
output.extend(insert)
else:
output.append(reword)
return output
def _sub(self, words, sub):
output = []
for word in words:
word_lower = word.lower()
if word_lower in sub:
output.extend(sub[word_lower])
else:
output.append(word)
return output
def _match_key(self, words, key):
for decomp in key.decomps:
results = self._match_decomp(decomp.parts, words)
if results is None:
continue
results = [self._sub(words, self.posts) for words in results]
reasmb = self._next_reasmb(decomp)
if reasmb[0] == 'goto':
goto_key = reasmb[1]
if not goto_key in self.keys:
raise ValueError("Invalid goto key {}".format(goto_key))
return self._match_key(words, self.keys[goto_key])
output = self._reassemble(reasmb, results)
if decomp.save:
self.memory.append(output)
continue
return output
return None
def respond(self, text):
if text.lower() in self.quits:
return None
text = re.sub(r'\s*\.+\s*', ' . ', text)
text = re.sub(r'\s*,+\s*', ' , ', text)
text = re.sub(r'\s*;+\s*', ' ; ', text)
words = [w for w in text.split(' ') if w]
words = self._sub(words, self.pres)
keys = [self.keys[w.lower()] for w in words if w.lower() in self.keys]
keys = sorted(keys, key=lambda k: -k.weight)
output = None
for key in keys:
output = self._match_key(words, key)
if output:
break
if not output:
if self.memory:
index = random.randrange(len(self.memory))
output = self.memory.pop(index)
else:
output = self._next_reasmb(self.keys['xnone'].decomps[0])
return " ".join(output)
def initial(self):
return random.choice(self.initials)
def final(self):
return random.choice(self.finals)
def run(self):
print(self.initial())
while True:
sent = input('> ')
output = self.respond(sent)
if output is None:
break
print(output)
print(self.final())
def main():
eliza = Eliza()
eliza.load('doctor.txt')
eliza.run()
if __name__ == '__main__':
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main()