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-rw-r--r--gn3/genodb.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/gn3/genodb.py b/gn3/genodb.py
index 8130c7f..62043d0 100644
--- a/gn3/genodb.py
+++ b/gn3/genodb.py
@@ -3,7 +3,7 @@ import numpy as np
class GenotypeDatabase:
def __init__(self, path):
- self.env = lmdb.open(path, create=False)
+ self.env = lmdb.open(path, readonly=True, create=False)
self.txn = self.env.begin()
# 32 bytes in a SHA256 hash
self.hash_length = 32