From 8b7a0e59d318fbaf77d7197e1d55afbc6a614d3c Mon Sep 17 00:00:00 2001
From: Neil Shephard <nshephard@protonmail.com>
Date: Tue, 3 Jun 2025 14:26:51 +0100
Subject: [PATCH] bug: handle UnboundLocalError in Bruker files

Closes #56

Adds another `except` to capture `UnboundLocalError` that arise in some Bruker files which appear to be a mixture of
AFM/MFM.
---
 pySPM/Bruker.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pySPM/Bruker.py b/pySPM/Bruker.py
index c7c696f..dfbd7d1 100644
--- a/pySPM/Bruker.py
+++ b/pySPM/Bruker.py
@@ -158,6 +158,8 @@ def get_channel(
                     )
                 except KeyError:
                     continue
+                except UnboundLocalError:
+                    continue
             else:
                 _type = "Bruker AFM"
                 try:
@@ -166,6 +168,8 @@ def get_channel(
                     )
                 except KeyError:
                     continue
+                except UnboundLocalError:
+                    continue
             result = re.match(r'([^ ]+) \[([^]]*)] "([^"]*)"', layer_name).groups()
             if result[2] == channel:
                 if debug: