Error: completed with code 1 (0x1)

[LWN]

Hello.

The forum is new. In Python, I’m taking the very first steps))
I looked at the lesson, installed Virtual Studio, created the IronPython project

In general, such a code turned out.

<Window 
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
       Title="WpfApplication1" Height="300" Width="300">
    <Grid>
        <TextBox x:Name="a" HorizontalAlignment="Left" Height="22" Margin="33,70,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="58" TextChanged="TextBox_TextChanged"/>
        <TextBox x:Name="b" HorizontalAlignment="Left" Height="22" Margin="197,70,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="58"/>
        <Label Content="+" HorizontalAlignment="Left" Margin="132,70,0,0" VerticalAlignment="Top"/>
        <Label x:Name="labelresult" Content="" HorizontalAlignment="Left" Margin="122,142,0,0" VerticalAlignment="Top"/>
        <Button Content="Sum" HorizontalAlignment="Left" Margin="104,106,0,0" VerticalAlignment="Top" Width="76" Click="Button_Click"/>
    </Grid>
</Window>

import wpf
 
from System.Windows import Application, Window
 
class MyWindow(Window):
    def __init__(self):
        wpf.LoadComponent(self, 'WpfApplication1.xaml')
        
    def Button_Click(self, sender, e):
        аss = float(self.a.text)
        bs = float(self.b.text)
        result = ass + bs
        self.labelresult.Content = str(result)
 
 
if __name__ == '__main__':
    Application().Run(MyWindow())

In general, after execution produces the following:

"ipyw32.exe" (CLR v4.0.30319: DefaultDomain). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_32 \ mscorlib \ v4.0_4.0.0.0__b77a5c561934e089 \ mscorlib.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: DefaultDomain). Uploaded "C: \ Program Files \ IronPython 2.7 \ ipyw32.exe". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ Microsoft.Dynamic \ v4.0_1.2.2.0__7f709c5b713576e1 \ Microsoft.Dynamic.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ System.Core \ v4.0_4.0.0.0__b77a5c561934e089 \ System.Core.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ System \ v4.0_4.0.0.0__b77a5c561934e089 \ System.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ Microsoft.Scripting \ v4.0_1.2.2.0__7f709c5b713576e1 \ Microsoft.Scripting.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ System.Configuration \ v4.0_4.0.0.0__b03f5f7f11d50a3a \ System.Configuration.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ System.Xml \ v4.0_4.0.0.0__b77a5c561934e089 \ System.Xml.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ IronPython \ v4.0_2.7.9.0__7f709c5b713576e1 \ IronPython.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ IronPython.Modules \ v4.0_2.7.9.0__7f709c5b713576e1 \ IronPython.Modules.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ System.Numerics \ v4.0_4.0.0.0__b77a5c561934e089 \ System.Numerics.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Program Files \ IronPython 2.7 \ DLLs \ IronPython.SQLite.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Program Files \ IronPython 2.7 \ DLLs \ IronPython.Wpf.dll". Character loading skipped. The module is optimized, the debugger option "Only my code" is enabled.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded "C: \ Windows \ Microsoft.Net \ assembly \ GAC_MSIL \ mscorlib.resources \ v4.0_4.0.0.0_en_b77a5c561934e089 \ mscorlib.resources.dll". Module assembly completed without characters.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded by Anonymously Hosted DynamicMethods Assembly.
"ipyw32.exe" (CLR v4.0.30319: ipyw32.exe). Uploaded by "Snippets.scripting".
The program "[9652] ipyw32.exe" exited with code 1 (0x1).

I don’t understand why the program does not start as in the example at the end of the video. If anyone can help, I will be grateful.