我正在尝试使用 seabreeze ( seabreeze ) 和 pyseabreeze ( pyseabreeze ) 与海洋光学光谱仪连接。
如果我从 windows 中的命令提示符 (cmd) 输入 python 并逐行输入以下代码,它就可以工作。但是,如果我将它放在脚本 (spec_test.py) 中并尝试使用“python spec_test.py”从 cmd.exe 运行它,它将无法正常工作。
我已经搜索了很多类似的问题,但似乎没有一个涵盖我遇到的问题。我正在运行 Windows 7 64 位,使用 anaconda 安装的 python 3.5.2。我还必须安装 pyusb 和 libusb 才能使用 pyseabreeze。
编码:
import seabreeze
seabreeze.use('pyseabreeze')
import seabreeze.spectrometers as sb
devs = sb.list_devices()
print(devs)
spec = sb.Spectrometer(devs[0])
print(spec.model)
以及我收到的错误消息:
[<SeaBreezeDevice USB2000PLUS:FLMS02379>]
Traceback (most recent call last):
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\seabreeze\pyseabreeze\interfaces\common.py", line 14, in decorated_func
return func(*args, **kwargs)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\seabreeze\pyseabreeze\interfaces\spectrometer.py", line 46, in open
self.open_device(device.handle)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\seabreeze\pyseabreeze\interfaces\communication.py", line 37, in open_device
device.set_configuration()
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\usb\core.py", line 869, in set_configuration
self._ctx.managed_set_configuration(self, configuration)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\usb\core.py", line 102, in wrapper
return f(self, *args, **kwargs)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\usb\core.py", line 148, in managed_set_configuration
self.backend.set_configuration(self.handle, cfg.bConfigurationValue)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\usb\backend\libusb0.py", line 493, in set_configuration
_check(_lib.usb_set_configuration(dev_handle, config_value))
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\usb\backend\libusb0.py", line 431, in _check
raise USBError(errmsg, ret)
usb.core.USBError: [Errno None] b'libusb0-dll:err [set_configuration] could not set config 1: win error: The parameter is incorrect.\r\n'
Traceback (most recent call last):
File "<ipython-input-9-ead886eb3666>", line 1, in <module>
runfile('C:/Users/Raman Lab/Python code/Spectrometers/spec_testing.py', wdir='C:/Users/Raman Lab/Python code/Spectrometers')
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 866, in runfile
execfile(filename, namespace)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\spyder\utils\site\sitecustomize.py", line 102, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)
File "C:/Users/Raman Lab/Python code/Spectrometers/spec_testing.py", line 7, in <module>
spec = sb.Spectrometer(devs[0])
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\seabreeze\spectrometers.py", line 62, in __init__
self._open_device(device)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\seabreeze\spectrometers.py", line 90, in _open_device
lib.device_open(self._dev)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\seabreeze\pyseabreeze\wrapper.py", line 81, in device_open
return device.interface.open(device)
File "C:\Users\Raman Lab\AppData\Local\Continuum\Anaconda3\lib\site-packages\seabreeze\pyseabreeze\interfaces\common.py", line 23, in decorated_func
raise SeaBreezeError(msg)
SeaBreezeError: An error occured during opening.
谢谢你的帮助!
编辑:出于某种原因,我想出了这一点,认为它可能有助于描述问题。如果我从 cmd.exe 输入交互式 python 并粘贴代码而不是手动输入,我会得到同样的错误。这让我觉得(很可能我错了)它与进口速度有关。我尝试在第 3 行和第 5 行之间添加几秒钟的睡眠,以模拟在我输入提示时发生的情况,但这没有帮助。我希望这已经足够描述了。