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akari-bot/modules/calc/__init__.py

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import os
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from core.exceptions import NoReportException
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from core.builtins.message import MessageSession
from core.component import on_command
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import asyncio
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c = on_command('calc', developers=[
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'Dianliang233'], desc='安全地计算 Python ast 表达式。')
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@c.handle('<math_expression>', options_desc={'+': '和/正数1 + 2 -> 3',
'-': '差/负数3 - 1 -> 2',
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'/': '6 / 3 -> 2',
'//': '整除7 // 4 -> 1',
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'*': '2 * 3 -> 6',
'**': 'x 的 y 次幂(由于性能问题,结果不得超过 4e+62 ** 3 -> 8',
'%': '取模5 % 2 -> 1',
'==': '等于1 == 1 -> True',
'<': '小于1 < 2 -> True',
'>': '大于2 > 1 -> True',
'<=': '小于等于1 <= 2 -> True',
'>>': 'x 右移 y 位(相当于 x / (2 ** y)y < 1000032 >> 5 -> 1',
'<<': 'x 左移 y 位(相当于 x * (2 ** y)y < 100001 << 5 -> 32',
'in': 'x 在 y 中:"hat" in "what" -> True',
'not': 'not True -> False',
'is': 'x 与 y 是同一个对象1 is 1 -> True',
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'randint(x)': '小于 x 的随机整数randint(6) -> 5',
'rand()': '0 与 1 之间的随机浮点数rand() -> 0.5789015836448923',
'int()': '转换为整数int(1.5) -> 1',
'float()': '转换为浮点数float(1) -> 1.0',
'str()': '转换为字符串str(1) -> "1"',
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'更多数学函数': 'https://docs.python.org/zh-cn/3/library/math.html',
'更多统计函数': 'https://docs.python.org/zh-cn/3/library/statistics.html',
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})
async def _(msg: MessageSession):
try:
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p = await asyncio.create_subprocess_shell(" ".join(
['python', os.path.abspath("./modules/calc/calc.py"), msg.parsed_msg["<math_expression>"]]),
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.PIPE,
)
try:
await asyncio.wait_for(p.wait(), timeout=10)
except asyncio.TimeoutError:
p.kill()
raise NoReportException('计算超时。')
stdout_data, stderr_data = await p.communicate()
if p.returncode == 0:
res = stdout_data.decode('utf-8')
if res[0:6] == 'Result':
await msg.finish(f'{(msg.parsed_msg["<math_expression>"])} = {res[7:]}')
else:
await msg.finish(f'表达式无效:{res[7:]}')
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except Exception as e:
raise NoReportException(e)