An error occurred: Expected '(', got ''

[uggima]

Prerequisites

• I have read FAQ
• I have searched existing issues (including closed ones)
• I use KiKit at least version 1.6.0 (older version are not supported)

KiKit version

1.6.0

KiCAD version

8.0.8 (although was the same in 8.0.6)

Operating system

Windows

Description

Gui and CLI both presented me with:

An error occurred: Expected '(', got ''

Steps to Reproduce

Running any panelize command.

kikit panelize "esp8266 wled board.kicad_pcb" "pannel esp8266 wled board.kicad_pcb" --debug trace:true -p ..\..\kikit_panel3.json

Its the same with my json as it is with h/vspace and row/cols set.

%userprofile%\Documents\Kicad\esp8266 wled\esp8266 wled board>kikit panelize "esp8266 wled board.kicad_pcb" "pannel esp8266 wled board.kicad_pcb" --debug trace:true -p ....\kikit_panel3.json
An error occurred: Expected '(', got ''
No output files produced
Traceback (most recent call last):
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\panelize_ui.py", line 217, in panelize
doPanelization(input, output, preset, plugin)
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\panelize_ui.py", line 271, in doPanelization
ki.buildLayout(preset, panel, input, sourceArea)
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\panelize_ui_impl.py", line 257, in buildLayout
substrates = panel.makeGrid(
^^^^^^^^^^^^^^^
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\panelize.py", line 1331, in makeGrid
boardSize = self.appendBoard(
^^^^^^^^^^^^^^^^^
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\panelize.py", line 1044, in appendBoard
self._inheriCustomDrcRules(board, netRenamerFn)
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\panelize.py", line 818, in _inheriCustomDrcRules
rules = parseSexprListF(f)
^^^^^^^^^^^^^^^^^^
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\sexpr.py", line 213, in parseSexprListF
s = readSexpr(stream, limit=limit)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\sexpr.py", line 165, in readSexpr
stream.shift("(")
File "%userprofile%\Documents\KiCad\8.0\3rdparty\Python311\site-packages\kikit\sexpr.py", line 33, in shift
raise ParseError(f"Expected '{expected}', got {repr(c)}")
kikit.sexpr.ParseError: Expected '(', got ''

%userprofile%\Documents\Kicad\esp8266 wled\esp8266 wled board>python --version
Python 3.11.5

%userprofile%\Documents\Kicad\esp8266 wled\esp8266 wled board>kikit --version
kikit, version 1.6.0

%userprofile%\Documents\Kicad\esp8266 wled\esp8266 wled board>pip install kikit
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: kikit in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (1.6.0)
Requirement already satisfied: click>=7.1 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from kikit) (8.1.7)
Requirement already satisfied: commentjson>=0.9 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from kikit) (0.9.0)
Requirement already satisfied: markdown2>=2.4 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from kikit) (2.5.0)
Requirement already satisfied: numpy in c:\program files\kicad\8.0\bin\lib\site-packages (from kikit) (2.2.1)
Requirement already satisfied: pcbnewTransition<=0.5,>=0.4.1 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from kikit) (0.4.2)
Requirement already satisfied: pybars3>=0.9 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from kikit) (0.9.7)
Requirement already satisfied: shapely>=2.0.3 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from kikit) (2.0.6)
Requirement already satisfied: solidpython>=1.1.2 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from kikit) (1.1.3)
Requirement already satisfied: colorama in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from click>=7.1->kikit) (0.4.6)
Requirement already satisfied: lark-parser<0.8.0,>=0.7.1 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from commentjson>=0.9->kikit) (0.7.8)
Requirement already satisfied: PyMeta3>=0.5.1 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from pybars3>=0.9->kikit) (0.5.1)
Requirement already satisfied: PrettyTable==0.7.2 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from solidpython>=1.1.2->kikit) (0.7.2)
Requirement already satisfied: euclid3<0.2.0,>=0.1.0 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from solidpython>=1.1.2->kikit) (0.1)
Requirement already satisfied: ply<4.0,>=3.11 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from solidpython>=1.1.2->kikit) (3.11)
Requirement already satisfied: pypng<0.0.20,>=0.0.19 in %userprofile%\documents\kicad\8.0\3rdparty\python311\site-packages (from solidpython>=1.1.2->kikit) (0.0.19)

Solution was to remove

"""
Build layout for the boards - e.g., make a grid out of them.

Return the list of created substrates and framing substrates. Also ensures
that the partition line is build properly.
"""

from after the "def buildLayout(preset, panel, sourceBoard, sourceArea):" line in panelize_ui_impl.py and it works? Not written any python in 6+ years so no idea why it works but it does.

[uggima]

And scratch the 'fixed' bit. couple of runs later and back to failing with not being able to reproduce a success, even when attempting with other input files as well.

[yaqwsx]

You haven't provided enough information (i.e., the source files) to reproduce the issue. Until you provide precise steps to reproduce, no action will be taken.

[uggima]

Sorry for slow reply and lack of source file, attempted with another file at the time and it behaved the same. Now tried two other files and its working perfectly. Added .log to the kicad_pcb to allow upload.

esp8266 wled board.kicad_pcb.log as input any any name for output, h/vspacing:1mm row/cols:5

Tried comparing the file with one that worked and nothing jumped out as wrong. Tried removing things and testing, ended up with a blank pcbfile apart from edge cuts and it still generated the same error......
Then finally removed edge cuts so blank file, saved. "Failed due to no edge cuts". Undo save again and no error (when there is JUST edge cuts)....
Removing and replacing edge cuts in uploaded file doesn't remove the error.

[kyhm]

@yaqwsx @uggima I encountered this today, my first time using kikit 1.7.0 to panelize a board designed in Kicad 8.0.9. Looking at _inheriCustomDrcRules in the traceback hinted me that it's expecting the custom DRC rules to be non-empty. The board was a simple 2-layer breakout created with no custom DRC rules, and the workaround for me was to add this via gui under Board Setup -> Design Rules -> Custom Rules -> DRC rules:

(version 1)

Github won't let me attach the resulting .kicad_dru file, but the workaround changed it from empty to containing the above.

[yaqwsx]

@kyhm Thank you for the investigation. This is the first time I have seen the file exist, but being empty.

Fixed in 5c25a71.