Question

我写了一个适用于asyncio的代码。在该代码中，我必须使用./check.py < file.txt从标准输入读取文件我可以从终端输入。通常它工作正常。但这不适用于从标准输入中读取文件中的数据。

#!/usr/bin/env python3.6

import asyncio
from aioconsole import ainput

async def read_input():
    while True:
        inp = await ainput()
        print('got ' + inp)

if (__name__ == "__main__"):
    asyncio.get_event_loop().run_until_complete(read_input())

通常它的作用就像

$ ./check.py 
4
got 4
5
got 5

但是当直接从文件读取时，我遇到此日志：

$ ./check.py < test/test_case 
Traceback (most recent call last):
  File "./check.py", line 12, in <module>
    asyncio.get_event_loop().run_until_complete(read_input())
  File "/usr/lib/python3.6/asyncio/base_events.py", line 468, in run_until_complete
    return future.result()
  File "./check.py", line 8, in read_input
    inp = await ainput()
  File "/usr/local/lib/python3.6/dist-packages/aioconsole/stream.py", line 156, in ainput
    reader, writer = yield from get_standard_streams(loop=loop)
  File "/usr/local/lib/python3.6/dist-packages/aioconsole/stream.py", line 144, in get_standard_streams
    cache[key] = yield from connection
  File "/usr/local/lib/python3.6/dist-packages/aioconsole/stream.py", line 132, in create_standard_streams
    reader, writer = yield from future
  File "/usr/local/lib/python3.6/dist-packages/aioconsole/stream.py", line 114, in open_pipe_connection
    yield from loop.connect_read_pipe(lambda: protocol, pipe_in)
  File "/usr/lib/python3.6/asyncio/base_events.py", line 1099, in connect_read_pipe
    transport = self._make_read_pipe_transport(pipe, protocol, waiter)
  File "/usr/lib/python3.6/asyncio/unix_events.py", line 185, in _make_read_pipe_transport
    return _UnixReadPipeTransport(self, pipe, protocol, waiter, extra)
  File "/usr/lib/python3.6/asyncio/unix_events.py", line 353, in __init__
    raise ValueError("Pipe transport is for pipes/sockets only.")
ValueError: Pipe transport is for pipes/sockets only.

无法了解为什么它的行为有所不同？我想使用协同程序读取./check.py < file.txt之类的文件。

Answer 1

a bug中已修复的是aioconsole v0.1.9。

只需运行以下命令即可获取最新版本：

System.ArgumentNullException: Value cannot be null.
Parameter name: input
   at System.Guid.Parse(String input)
   at Archetype.PropertyEditors.ArchetypePropertyEditor.ArchetypePropertyValueEditor.ConvertEditorToDb(ContentPropertyData editorValue, Object currentValue)
 2018-07-12 08:28:56,429 [P5580/D2/T81] ERROR Archetype.PropertyEditors.ArchetypePropertyEditor+ArchetypePropertyValueEditor - Value cannot be null.

无法从asyncio中的标准输入读取文件

1 个答案: