为什么 PyQt5 导入显示有关 windows 和蓝牙的错误？

Question

The import of PyQt5 come with this error:

C:\Python364>python.exe
Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:54:40) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from PyQt5.Qt import *

If I used the normal import of python module PyQt5, this error doesn't show:

C:\Python364>python.exe
Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:54:40) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import PyQt5
>>> from PyQt5 import *
>>>

The question addresses several issues related to:

• Python integrity;
• the integrity of the PyQt5 mode;
• the integrity of the Windows 8.1 operating system;

Is that normal to happen?

Answer 1

Check this: https://doc-snapshots.qt.io/qt5-5.9/qtbluetooth-index.html

The Bluetooth API implemented into PyQt5 does not support Windows (yet?).

Importing PyQt5.Qt also imports the Bluetooth API of Qt - either downgrade to 5.9 (dont know at what point exactly this happens, but 5.9 and lower should be prior to the implementation) or specify your import.

Answer 2

Had same problem. Also currently qt 5.9 no more available in PIP.

In my case just renamed file C:\\Python\\Python38-32\\Lib\\site-packages\\PyQt5\\Qt\\bin\\Qt5Bluetooth.dll to _Qt5Bluetooth.dll

No bluetooth dll, no problem :)

Answer 3

Python 3. First of all, make sure that Python 3 is available on your system.

Install Xcode and command-line tools. If you are using OS X, download Xcode and install it. Install Qt Libraries. Create a virtualenv for the PyQt5 and SIP libs. Install SIP. Install PyQt5. All Done!