From 9741f40579edaa8a0d343847e378c662fd4d7211 Mon Sep 17 00:00:00 2001
From: Nick Macholl <nick@databento.com>
Date: Thu, 26 Oct 2023 08:24:28 -0700
Subject: [PATCH] FIX: Windows line endings for symbol mapping tools

---
 databento/common/symbology.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/databento/common/symbology.py b/databento/common/symbology.py
index fdd69ca..f2c0a51 100644
--- a/databento/common/symbology.py
+++ b/databento/common/symbology.py
@@ -5,7 +5,6 @@
 import datetime as dt
 import functools
 import json
-import os
 from collections import defaultdict
 from collections.abc import Mapping
 from io import TextIOWrapper
@@ -452,7 +451,11 @@ def map_symbols_csv(
             out_fields = (*in_fields, "symbol")
 
             with out_file_valid.open("w") as output:
-                writer = csv.DictWriter(output, fieldnames=out_fields)
+                writer = csv.DictWriter(
+                    output,
+                    fieldnames=out_fields,
+                    lineterminator="\n",
+                )
                 writer.writeheader()
 
                 for row in reader:
@@ -533,7 +536,7 @@ def map_symbols_json(
                         output,
                         separators=(",", ":"),
                     )
-                    output.write(os.linesep)
+                    output.write("\n")
 
         return out_file_valid