How To Display An Svg Image In Python

I was following this tutorial on how to write a chess program in Python. It uses the python-chess engine. The functions from that engine apparently return SVG data, that could be u

Solution 1:

I think you are getting confused by the scripting nature of Python. You say, you have experience with Qt development under C++. Wouldn't you create a main window widget there first and add to it your SVG widget within which you would call or load SVG data?

I would rewrite your code something like this.

import chess
import chess.svg

from PyQt5.QtSvg import QSvgWidget
from PyQt5.QtWidgets import QApplication, QWidget


classMainWindow(QWidget):
    def__init__(self):
        super().__init__()

        self.setGeometry(100, 100, 1100, 1100)

        self.widgetSvg = QSvgWidget(parent=self)
        self.widgetSvg.setGeometry(10, 10, 1080, 1080)

        self.chessboard = chess.Board()

        self.chessboardSvg = chess.svg.board(self.chessboard).encode("UTF-8")
        self.widgetSvg.load(self.chessboardSvg)

if __name__ == "__main__":
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec()

EDIT

It would be even better if you would add a paint function to the MainWindow class. Because for sure in future, you would want to repaint your board image many times, whenever you would move a piece. So I would do something like this.

defpaintEvent(self, event):
         self.chessboardSvg = chess.svg.board(self.chessboard).encode("UTF-8")
         self.widgetSvg.load(self.chessboardSvg)