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import base64
import io
import logging
import os
import queue
import re
import signal
import sys
import traceback
import uuid
from typing import Optional, Tuple
import json5
import PIL.Image
from jupyter_client import KernelManager
from lagent.actions.base_action import BaseAction
from lagent.schema import ActionReturn, ActionStatusCode
WORK_DIR = os.getenv('CODE_INTERPRETER_WORK_DIR',
f"{os.path.abspath('./output_images')}")
DEFAULT_DESCRIPTION = """启动Jupter Kernel用于执行Python代码。"""
START_CODE = """
import os
os.environ["CUDA_VISIBLE_DEVICES"] = "-1"
def input(*args, **kwargs):
raise NotImplementedError('Python input() function is disabled.')
get_ipython().system = lambda *args: print('Assume we have this package, ! is disabled!')
{}
""" # noqa
class TimeoutError(Exception):
pass
class IPythonInterpreter(BaseAction):
"""A IPython executor that can execute Python scripts in a jupyter manner.
Args:
description (str): The description of the action. Defaults to
DEFAULT_DESCRIPTION.
name (str, optional): The name of the action. If None, the name will
be class nameDefaults to None.
enable (bool, optional): Whether the action is enabled. Defaults to
True.
disable_description (str, optional): The description of the action when
it is disabled. Defaults to None.
timeout (int): Upper bound of waiting time for Python script execution.
Defaults to 20.
trim_output (int, optional): Max characters restriction of ipython
outputs. If None, do not perform any trim.
Notice that, this is not token length but string length.
Trim strategies might be added later if needed. Defaults to 1024.
user_data_dir (str): Specified the user data directory for files
loading. If set to `ENV`, use `USER_DATA_DIR` environment variable.
Defaults to `ENV`.
force_user_data (bool): Whether to force use user data.
Defaults to True.
"""
_KERNEL_CLIENTS = {}
def __init__(self,
description: str = DEFAULT_DESCRIPTION,
name: Optional[str] = None,
enable: bool = True,
disable_description: Optional[str] = None,
timeout: int = 20,
trim_output: Optional[int] = 1024,
user_data_dir: str = 'ENV',
force_user_data: bool = True) -> None:
super().__init__(description, name, enable, disable_description)
self.timeout = timeout
if user_data_dir == 'ENV':
user_data_dir = os.environ.get('USER_DATA_DIR', '')
if user_data_dir:
# user_data_dir = os.path.dirname(user_data_dir)
# in case change of dirs
assert os.path.exists(user_data_dir), \
f'{user_data_dir} does not exist.'
user_data_dir = os.path.abspath(user_data_dir)
user_data_dir = f"import os\nos.chdir('{user_data_dir}')"
else:
if force_user_data:
raise ValueError('user_data_dir is not set. Please '
'set force_user_data to False if '
'no extra data needed.')
self.user_data_dir = user_data_dir
self._initialized = False
self.trim_output = trim_output
if not os.path.exists(WORK_DIR):
os.mkdir(WORK_DIR)
@staticmethod
def start_kernel():
# start the kernel and manager
km = KernelManager()
km.start_kernel()
kc = km.client()
return km, kc
def initialize(self):
if self._initialized:
return
pid = os.getpid()
if pid not in self._KERNEL_CLIENTS:
self._KERNEL_CLIENTS[pid] = self.start_kernel()
self.kernel_manager, self.kernel_client = self._KERNEL_CLIENTS[pid]
self._initialized = True
self._call(START_CODE.format(self.user_data_dir), None)
def reset(self):
if not self._initialized:
self.initialize()
else:
code = "get_ipython().run_line_magic('reset', '-f')\n" + \
START_CODE.format(self.user_data_dir)
self._call(code, None)
def _call(self,
command: str,
timeout: Optional[int] = None) -> Tuple[str, bool]:
self.initialize()
command = extract_code(command)
# check previous remaining result
while True:
try:
msg = self.kernel_client.get_iopub_msg(timeout=1)
msg_type = msg['msg_type']
if msg_type == 'status':
if msg['content'].get('execution_state') == 'idle':
break
except queue.Empty:
# assume no result
break
self.kernel_client.execute(command)
def _inner_call():
result = ''
succeed = True
image_idx = 0
while True:
text = ''
image = ''
finished = False
msg_type = 'error'
try:
msg = self.kernel_client.get_iopub_msg(timeout=10)
msg_type = msg['msg_type']
if msg_type == 'status':
if msg['content'].get('execution_state') == 'idle':
finished = True
elif msg_type == 'execute_result':
text = msg['content']['data'].get('text/plain', '')
if 'image/png' in msg['content']['data']:
image_b64 = msg['content']['data']['image/png']
image_url = publish_image_to_local(image_b64)
image_idx += 1
image = '' % (image_idx, image_url)
elif msg_type == 'display_data':
if 'image/png' in msg['content']['data']:
image_b64 = msg['content']['data']['image/png']
image_url = publish_image_to_local(image_b64)
image_idx += 1
image = '' % (image_idx, image_url)
else:
text = msg['content']['data'].get('text/plain', '')
elif msg_type == 'stream':
msg_type = msg['content']['name'] # stdout, stderr
text = msg['content']['text']
elif msg_type == 'error':
succeed = False
text = escape_ansi('\n'.join(
msg['content']['traceback']))
if 'M6_CODE_INTERPRETER_TIMEOUT' in text:
text = f'Timeout. No response after {timeout} seconds.' # noqa
except queue.Empty:
# stop current task in case break next input.
self.kernel_manager.interrupt_kernel()
succeed = False
text = f'Timeout. No response after {timeout} seconds.'
finished = True
except Exception:
succeed = False
text = 'The code interpreter encountered an unexpected error.' # noqa
logging.warning(''.join(
traceback.format_exception(*sys.exc_info())))
finished = True
if text:
result += f'\n\n{msg_type}:\n\n```\n{text}\n```'
if image:
result += f'\n\n{image}'
if finished:
# in case output text too long
# might need better design later
if self.trim_output and len(result) > self.trim_output:
ellip = '......'
half_len = int((self.trim_output - len(ellip)) / 2)
result = result[:half_len] + ellip + result[-half_len:]
return succeed, result
try:
if timeout:
def handler(signum, frame):
raise TimeoutError()
signal.signal(signal.SIGALRM, handler)
signal.alarm(timeout)
succeed, result = _inner_call()
except TimeoutError:
succeed = False
text = 'The code interpreter encountered an unexpected error.'
result = f'\n\nerror:\n\n```\n{text}\n```'
finally:
if timeout:
signal.alarm(0)
result = result.lstrip('\n')
return succeed, result
def __call__(self,
command: str,
timeout: Optional[int] = None) -> ActionReturn:
tool_return = ActionReturn(url=None, args=None, type=self.name)
extracted_command = extract_code(command)
tool_return.args = dict(text=command, extract_code=extracted_command)
if extracted_command:
succeed, result = self._call(extracted_command, timeout)
if succeed:
if not result:
result = 'The code is succeed without any outputs.'
tool_return.result = dict(text=result)
tool_return.state = ActionStatusCode.SUCCESS
else:
tool_return.errmsg = repr(result)
tool_return.state = ActionStatusCode.API_ERROR
else:
tool_return.errmsg = 'The input code is empty. Please follow the format.' # noqa
tool_return.state = ActionStatusCode.API_ERROR
return tool_return
def extract_code(text):
# Match triple backtick blocks first
triple_match = re.search(r'```[^\n]*\n(.+?)```', text, re.DOTALL)
# Match single backtick blocks second
single_match = re.search(r'`([^`]*)`', text, re.DOTALL)
if triple_match:
text = triple_match.group(1)
elif single_match:
text = single_match.group(1)
else:
try:
text = json5.loads(text)['code']
except Exception:
pass
# If no code blocks found, return original text
return text
def escape_ansi(line):
ansi_escape = re.compile(r'(?:\x1B[@-_]|[\x80-\x9F])[0-?]*[ -/]*[@-~]')
return ansi_escape.sub('', line)
def publish_image_to_local(image_base64: str):
image_file = str(uuid.uuid4()) + '.png'
local_image_file = os.path.join(WORK_DIR, image_file)
png_bytes = base64.b64decode(image_base64)
assert isinstance(png_bytes, bytes)
bytes_io = io.BytesIO(png_bytes)
PIL.Image.open(bytes_io).save(local_image_file, 'png')
return local_image_file
# local test for code interpreter
def get_multiline_input(hint):
print(hint)
print('// Press ENTER to make a new line. Press CTRL-D to end input.')
lines = []
while True:
try:
line = input()
except EOFError: # CTRL-D
break
lines.append(line)
print('// Input received.')
if lines:
return '\n'.join(lines)
else:
return ''
if __name__ == '__main__':
code_interpreter = IPythonInterpreter()
while True:
print(code_interpreter(get_multiline_input('Enter python code:')))
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