From c54d37a606c146b3444167192402ac38306c9cda Mon Sep 17 00:00:00 2001
From: Ruben Verweij <verweij@physics.leidenuniv.nl>
Date: Fri, 24 Jan 2020 14:39:00 +0100
Subject: [PATCH] Fix typo in z-level check

---
 nd2reader/raw_metadata.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nd2reader/raw_metadata.py b/nd2reader/raw_metadata.py
index 2b8f22c..0d77ddc 100644
--- a/nd2reader/raw_metadata.py
+++ b/nd2reader/raw_metadata.py
@@ -162,7 +162,7 @@ class RawMetadata(object):
             list: the z levels, just a sequence from 0 to n.
         """
         z_levels = self._parse_dimension(r""".*?Z\((\d+)\).*?""")
-        if 0 == len(z_levels):
+        if 0 != len(z_levels):
             z_levels = parse_if_not_none(self.z_data, self._parse_z_coordinates)
             if z_levels is None:
                 z_levels = []