py 在带有 python 2.7.9 和 pip 1.5.6 的树莓派上。我多次安装和卸载 pyvisa 和 pyvisa-py，但问题仍然存在。我用 Raspberry 将 KEITHLEY Multimeter 2000 per R232 连接到 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'
当我尝试时
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)
如果有人可以帮助我解决这个问题，我将非常感激。