ResourceManager-py on raspberry pi AttributeError：'module‘对象没有属性'ResourceManager’

Question

在覆盆子pi上使用python 2.7.9和pip 1.5.6。我多次安装和卸载pyvisa和pyvisa-py，但问题仍然存在。我用覆盆子把KEITHLEY万用表2000 per R232连接到USB。

当我运行basic Code：import visa rm = visa.ResourceManager('@py') a=rm.list_resources() print(a)时，我收到：Traceback (most recent call last): File "pyvisa.py", line 1, in <module> import visa File "/usr/local/lib/python2.7/dist-packages/visa.py", line 16, in <module> from pyvisa import logger, __version__, log_to_screen, constants File "/home/pi/pyvisa.py", line 2, in <module> rm = visa.ResourceManager('@py') AttributeError: 'module' object has no attribute 'ResourceManager'

当我尝试时也是如此

python -m visa info

Traceback (most recent call last): File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main "__main__", fname, loader, pkg_name) File "/usr/lib/python2.7/runpy.py", line 72, in _run_code exec code in run_globals File "/usr/local/lib/python2.7/dist-packages/visa.py", line 16, in <module> from pyvisa import logger, __version__, log_to_screen, constants File "pyvisa.py", line 1, in <module> import visa File "/usr/local/lib/python2.7/dist-packages/visa.py", line 16, in <module> from pyvisa import logger, __version__, log_to_screen, constants ImportError: cannot import name logger另一方面，我不能升级，因为需求已经是最新的。pip install pyvisa-py --upgrade Requirement already up-to-date: pyvisa-py in /usr/local/lib/python2.7/dist-packages Requirement already up-to-date: pyvisa>=1.8 in /usr/local/lib/python2.7/dist-packages (from pyvisa-py) Requirement already up-to-date: enum34 in /usr/local/lib/python2.7/dist-packages (from pyvisa>=1.8->pyvisa-py)如果有人能帮我解决这个问题，我将不胜感激。

Answer 1

visa.py模块没有ResourceManager()，必须改用pyvsa.py

import pyvisa

rm = pyvisa.ResourceManager('@py')
a=rm.list_resources()
print(a)

如果您运行此代码将不会有任何错误，您应该能够打印任何连接的仪器。

Answer 2

“在Python2.7中，导入系统将始终使用工作目录中的文件，而不是站点包中的文件，并且当导入visa.py时，由于您的文件名为pyvisa.py，它将选择您自己的模块，而不是‘真正的’pyvisa模块。”来自github的MatthieuDartiailh。