How to use 'method is used to specify the window size in tkinter' in Python

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def set_canvas_size(
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        self, canvas_x=None, canvas_y=None,
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        resize_window=True, fullscreen=False
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    ):
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    """Change the logical canvas size and determine window/display sizes."""
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    if canvas_x is not None and canvas_y is not None:
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        self._canvas_logical = canvas_x, canvas_y
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    self._calculate_border_shift()
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    old_display_size = self._display_size
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    old_window_size = self._window_size
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    if resize_window or self._force_native_pixel:
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        # comply with requested size
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        if self._force_window_size:
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            self._window_size = self._force_window_size
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        else:
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            slack_ratio = _SLACK_RATIO if not fullscreen else 1.
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            if not self._force_native_pixel:
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                self._window_size = self._find_nonnative_window_size(slack_ratio)
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            else:
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                self._window_size = self._find_native_window_size(slack_ratio)
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        if fullscreen:
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            self._display_size = self._screen_size
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        else:
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            self._display_size = self._window_size
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    self._calculate_scale()
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    self._calculate_letterbox_shift()
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    return self._display_size != old_display_size or self._window_size != old_window_size

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def set_size(self, width, height):
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    self.SetSize((width, height))