Question

我试图在ubuntu 14.04.6上打开opcua客户端，但出现此错误：

cryptography is not installed, use of crypto disabled

cryptography is not installed, use of crypto disabled

cryptography is not installed, use of crypto disabled

pyqtgraph or numpy are not installed, use of graph feature disabled

Traceback (most recent call last):

  File "/usr/local/bin/opcua-client", line 9, in <module>

    load_entry_point('opcua-client==0.8.0', 'console_scripts', 'opcua-client')()

  File "/usr/lib/python3/dist-packages/pkg_resources.py", line 351, in load_entry_point

    return get_distribution(dist).load_entry_point(group, name)

  File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2363, in load_entry_point

    return ep.load()

  File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2088, in load

    entry = __import__(self.module_name, globals(),globals(), ['__name__'])

  File "/usr/local/lib/python3.4/dist-packages/uaclient/mainwindow.py", line 23, in <module>

    from uawidgets.attrs_widget import AttrsWidget

  File "/usr/local/lib/python3.4/dist-packages/uawidgets/attrs_widget.py", line 11, in <module>

    from uawidgets.get_node_dialog import GetNodeButton

  File "/usr/local/lib/python3.4/dist-packages/uawidgets/get_node_dialog.py", line 7, in <module>

    from uawidgets.tree_widget import TreeWidget

  File "/usr/local/lib/python3.4/dist-packages/uawidgets/tree_widget.py", line 62

    raise ValueError(f"Node {node} not found in tree")

                                                    ^
SyntaxError: invalid syntax

我已经用pip下载了所有依赖项。有人知道该怎么办吗？

Answer 1

从错误跟踪看，您似乎正在使用python 3.4，但是order by convert(expert0_.name_zh using ?) asc limit ?使用f-Strings格式，从python 3.6开始受支持。

尝试升级您的python版本。

OPCUA客户端无法打开

1 个答案: