覆盆子pi上的pyvisa-py AttributeError:' module'对象没有属性' ResourceManager'

时间:2018-01-10 21:40:01

标签: python python-2.7 raspberry-pi3 pyvisa

用python 2.7.9和pip 1.5.6覆盖树莓pi上的py。我安装并卸载了几次pyvisa和pyvisa-py,但问题仍然存在。我将每个R232的KEITHLEY Multimeter 2000连接到带有Raspberry的USB。

当我运行基本代码时: import visa rm = visa.ResourceManager('@py') a=rm.list_resources() print(a) 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

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,我无法升级,因为要求已经是最新的。 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,我将非常感激。

2 个答案:

答案 0 :(得分:0)

“在python 2.7中,导入系统将始终使用工作目录中的文件而不是site-packages中的文件,并且当导入visa.py时,您的文件名为pyvisa.py,它会选择您自己的模块,而不是'真实的'pyvisa模块。“来自github的MatthieuDartiailh

答案 1 :(得分:0)

visa.py模块没有ResourceManager(),而必须使用pyvsa.py

import pyvisa

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

如果运行此代码,不会有任何错误,您应该能够打印所连接的任何仪器。