我正在尝试在docker容器中使用python模块 keyboard 进行模拟键盘按键的自动化测试。但是，此模块在docker容器中不断返回错误，而在ubuntu VM中运行良好。
我安装了不同的常用docker容器和不同版本的python。我犯了同样的错误。可悲的是，谷歌并没有像平常一样有用。
以下是我所做操作的易于复制的版本：
docker run -t -d -u root --name docker_container python:3.7
echo $(docker exec -u root docker_container bash -c 'python3 -m keyboard' )
这将返回以下错误消息：
/usr/local/lib/python3.7/site-packages/keyboard/_nixkeyboard.py:110: UserWarning: Failed to create a device file using `uinput` module. Sending of events may be limited or unavailable depending on plugged-in devices.
device = aggregate_devices('kbd')
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/threading.py", line 926, in _bootstrap_inner
self.run()
File "/usr/local/lib/python3.7/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/usr/local/lib/python3.7/site-packages/keyboard/_nixcommon.py", line 106, in start_reading
self.event_queue.put(device.read_event())
File "/usr/local/lib/python3.7/site-packages/keyboard/_nixcommon.py", line 83, in read_event
data = self.input_file.read(struct.calcsize(event_bin_format))
AttributeError: 'NoneType' object has no attribute 'read'
Exception in thread Thread-2:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/threading.py", line 926, in _bootstrap_inner
self.run()
File "/usr/local/lib/python3.7/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/usr/local/lib/python3.7/site-packages/keyboard/_nixcommon.py", line 106, in start_reading
self.event_queue.put(device.read_event())
File "/usr/local/lib/python3.7/site-packages/keyboard/_nixcommon.py", line 83, in read_event
data = self.input_file.read(struct.calcsize(event_bin_format))
AttributeError: 'NoneType' object has no attribute 'read'
Traceback (most recent call last):
File "/usr/local/lib/python3.7/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/local/lib/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/local/lib/python3.7/site-packages/keyboard/__main__.py", line 10, in <module>
keyboard.hook(print_event_json)
File "/usr/local/lib/python3.7/site-packages/keyboard/__init__.py", line 459, in hook
append(callback)
File "/usr/local/lib/python3.7/site-packages/keyboard/_generic.py", line 67, in add_handler
self.start_if_necessary()
File "/usr/local/lib/python3.7/site-packages/keyboard/_generic.py", line 35, in start_if_necessary
self.init()
File "/usr/local/lib/python3.7/site-packages/keyboard/__init__.py", line 194, in init
_os_keyboard.init()
File "/usr/local/lib/python3.7/site-packages/keyboard/_nixkeyboard.py", line 114, in init
build_tables()
File "/usr/local/lib/python3.7/site-packages/keyboard/_nixkeyboard.py", line 73, in build_tables
dump = check_output(['dumpkeys', '--keys-only'], universal_newlines=True)
File "/usr/local/lib/python3.7/subprocess.py", line 395, in check_output
**kwargs).stdout
File "/usr/local/lib/python3.7/subprocess.py", line 472, in run
with Popen(*popenargs, **kwargs) as process:
File "/usr/local/lib/python3.7/subprocess.py", line 775, in __init__
restore_signals, start_new_session)
File "/usr/local/lib/python3.7/subprocess.py", line 1522, in _execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'dumpkeys': 'dumpkeys'
据我了解，它无法访问uinput设备/键盘以转储键。有没有一种方法可以虚拟模拟容器中的键盘以使其正常工作？