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-rw-r--r--Lib/csv.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/csv.py b/Lib/csv.py
index 758c79a4d8..cd0f7d34ba 100644
--- a/Lib/csv.py
+++ b/Lib/csv.py
@@ -253,7 +253,7 @@ class Sniffer:
additional chunks as necessary.
"""
- data = filter(None, data.split('\n'))
+ data = list(filter(None, data.split('\n')))
ascii = [chr(c) for c in range(127)] # 7-bit ASCII