Use pyuic5 to transfer .ui to .py, get Error in input file: not well-formed (invalid token): line 1, column 1

[SoleyRan]

Hi everyone, I just start to use pyqt. I tried to use pyuic5 to transfer .ui to .py:

pyuic5 -o mainwindow.py mainwindow.ui

but it got error:

Error in input file: not well-formed (invalid token): line 1, column 1

the head part of the ui file is:

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Form</class>
 <widget class="QWidget" name="Form">
  <property name="geometry"> 
...

I have installed pyqt5, pyqt5-tools. I searched online but not find solution yet. Please help me! Thanks in advance!

[SGaist]

Hi,

How did you create that .ui file ?
What was the version of the tool ?

[SoleyRan]

Hi @SGaist, I used designer.exe in pyqt5-tools to create .ui file. The pyqt5 version is 5.13.0, qt5 version is 5.13.0, python version is 3.6.4

[JonB]

@SoleyRan
It seems that error message can occur even if the actual error is late in the file. You could make a change in the Designer to force resave and check again. What about reading the .ui file into an XML editor to see if that complains about it, with a more specific error?

[SoleyRan]

@JonB Thank you for the reply. I modified the .ui file but it still occurred error. I thought it might because of the designer version problem, so I changed to use Qt creator to generate .ui file, finally it worked. It was weird because my Qt version is also 5.13.0, the same as pyqt5-tools...

[SGaist]

Do you have several versions installed ?