B4J Question Can I check the library is used?

[Theera]

Assume I need to select PyBridge library,so I check the PyBridge library in the Libraries list.
I would like to know how I check that I have selected the PyBridge library yet via my code.
My taught is

If IsUsed("PyBridge" ) then
          #Region PythonConnected
                             Py.Initialize(Me, "Py")
                            'โปรแกรมจะมองหา Python.exe Local Python ก่อน ถ้าหาไม่เจอ จะไปหาที่ global Python ซึ่งได้กำหนดเส้นทางไดเรคทอรี่Tools-Configure Paths ก่อนหน้า
                             Dim opt As PyOptions = Py.CreateOptions("Python/python/python.exe")
 
                             'แต่กรณีไม่ได้กำหนดเส้นทางไดเรคทอรี่Tools-Configure Paths และ ไม่สามารถค้นหา Local Python เจอ เราต้องเขียนคำสั่งต่อไปนี้แทน
                             'Dim opt As PyOptions = Py.CreateOptions(File.Combine("", "C:\Python\python313\python.exe")) '<--  ถ้าเราไม่ใช้คำสั่งนี้จะ Error เกิดขึ้น
                             Py.Start(opt)
                             Wait For Py_Connected (Success As Boolean)
                             If Success = False Then
                                      LogError("Failed to start Python process.")
                                      Return
                             End If
        #End Region
End If
If IsUsed("PyBridge" ) then
     Private Sub B4XPage_Background
          Py.KillProcess
     End Sub
End If

If IsUsed("PyBridge" ) then
    Private Sub Py_Disconnected
         Log("PyBridge disconnected")
    End Sub
End If

 

[Daestrum]

I think you would need to use tags like we do for B4J,B4A,B4I #If B4J ... #End If

If you just use 'normal' if statements the code will still get included in the compile.

You would need to create a PYTHON tag and use that : #If PYTHON ... #End If to surround the code that uses PyBridge.

 

[Theera]

I think you would need to use tags like we do for B4J,B4A,B4I #If B4J ... #End If

If you just use 'normal' if statements the code will still get included in the compile.

You would need to create a PYTHON tag and use that : #If PYTHON ... #End If to surround the code that uses PyBridge.

If # Python... #End If, I think we would only use a limited band, but If we have IsUsed() then.. End If , it is more useful better. At least it can be included in the same B4J template.

 

[aeric]

If you didn't add the library, you will get an error in the IDE and you can't initialize an object from the class or module.
Something like:
Unknown type: PyBridge
Are you missing a library reference?

 

[Theera]

If you didn't add the library, you will get an error in the IDE

That is the answer is isUsed("PyBridge") be not used , The app can skip the conditions to do anything.

 

[aeric]

That is the answer is isUsed("PyBridge") be not used , The app can skip the conditions to do anything.

I think you don't get my point.

 

[Theera]

I think you don't get my point.

My target is why we don't do in the only one template. I think PyBridgeis one of the part B4J Template. I 'm sorry that my terribled English.

 

[aeric]

I haven't tried PyBridge.
My point is,
If you add a library and don't use it, you get a warning in the Logs.
If you don't add a library and try to use it, you get an error unknown type in the Logs.