[PcbDraw][Print_PCB] Fixed issues when LXML isn't installed

- Moved PcbDraw import after the tool check

kibot/out_pcb_print.py

@@ -51,8 +51,6 @@ from .create_pdf import create_pdf_from_pages
 from .macros import macros, document, output_class  # noqa: F401
 from .drill_marks import DRILL_MARKS_MAP, add_drill_marks
 from .layer import Layer, get_priority
-from .PcbDraw.plot import PcbPlotter, PlotSubstrate
-from .PcbDraw.convert import save
 from . import __version__
 from . import log
 
@@ -771,6 +769,9 @@ class PCB_PrintOptions(VariantOptions):
                 self.plot_vias(la, pc, p, filelist, VIATYPE_MICROVIA, self.micro_via_color)
 
     def pcbdraw_by_module(self, pcbdraw_file, back):
+        self.ensure_tool('LXML')
+        from .PcbDraw.plot import PcbPlotter, PlotSubstrate
+        from .PcbDraw.convert import save
         # Run PcbDraw to make the heavy work (find the Edge.Cuts path and create masks)
         try:
             plotter = PcbPlotter(GS.board)

kibot/out_pcbdraw.py

@@ -31,14 +31,15 @@ from .optionable import Optionable
 from .out_base import VariantOptions
 from .macros import macros, document, output_class  # noqa: F401
 from . import log
-from .PcbDraw.plot import (PcbPlotter, PlotPaste, PlotPlaceholders, PlotSubstrate, PlotVCuts, mm2ki, PlotComponents,
-                           ResistorValue)
-from .PcbDraw.convert import save
 
 
 logger = log.get_logger()
 
 
+def mm2ki(val: float) -> int:
+    return int(val * 1000000)
+
+
 def pcbdraw_warnings(tag, msg):
     logger.warning('{}({}) {}'.format(W_PCBDRAW, tag, msg))
 
@@ -336,6 +337,7 @@ class PcbDrawOptions(VariantOptions):
         return [self._parent.expand_filename(out_dir, self.output)]
 
     def build_plot_components(self):
+        from .PcbDraw.plot import PlotComponents, ResistorValue
         remapping = self._remap
 
         def remapping_fun(ref, lib, name):
@@ -395,6 +397,9 @@ class PcbDrawOptions(VariantOptions):
 
     def run(self, name):
         super().run(name)
+        self.ensure_tool('LXML')
+        from .PcbDraw.plot import PcbPlotter, PlotPaste, PlotPlaceholders, PlotSubstrate, PlotVCuts
+        from .PcbDraw.convert import save
         # Select a name and format that PcbDraw can handle
         save_output_name = name
         save_output_format = self.format