Explicitly specify encoding when opening text files in Python code

2 files changed, 4 insertions, 4 deletions

diff --git a/contrib/linearize/linearize-data.py b/contrib/linearize/linearize-data.py
index f8aea27342..b501388fd2 100755
--- a/contrib/linearize/linearize-data.py
+++ b/contrib/linearize/linearize-data.py
@@ -75,7 +75,7 @@ def get_blk_dt(blk_hdr):
 # When getting the list of block hashes, undo any byte reversals.
 def get_block_hashes(settings):
     blkindex = []
-    f = open(settings['hashlist'], "r")
+    f = open(settings['hashlist'], "r", encoding="utf8")
     for line in f:
         line = line.rstrip()
         if settings['rev_hash_bytes'] == 'true':
@@ -261,7 +261,7 @@ if __name__ == '__main__':
         print("Usage: linearize-data.py CONFIG-FILE")
         sys.exit(1)
 
-    f = open(sys.argv[1])
+    f = open(sys.argv[1], encoding="utf8")
     for line in f:
         # skip comment lines
         m = re.search('^\s*#', line)
diff --git a/contrib/linearize/linearize-hashes.py b/contrib/linearize/linearize-hashes.py
index 8e1266ae0b..bfd2171947 100755
--- a/contrib/linearize/linearize-hashes.py
+++ b/contrib/linearize/linearize-hashes.py
@@ -96,7 +96,7 @@ def get_block_hashes(settings, max_blocks_per_call=10000):
 
 def get_rpc_cookie():
     # Open the cookie file
-    with open(os.path.join(os.path.expanduser(settings['datadir']), '.cookie'), 'r') as f:
+    with open(os.path.join(os.path.expanduser(settings['datadir']), '.cookie'), 'r', encoding="ascii") as f:
         combined = f.readline()
         combined_split = combined.split(":")
         settings['rpcuser'] = combined_split[0]
@@ -107,7 +107,7 @@ if __name__ == '__main__':
         print("Usage: linearize-hashes.py CONFIG-FILE")
         sys.exit(1)
 
-    f = open(sys.argv[1])
+    f = open(sys.argv[1], encoding="utf8")
     for line in f:
         # skip comment lines
         m = re.search('^\s*#', line)