use csv reader for counting instead of 'wc -l'

build_database.py

@@ -197,14 +197,13 @@ async def main_with_ctx(ctx, wanted_date):
 
     log.info("going to process posts")
 
-    line_count_str, _path = subprocess.check_output(
-        ["wc", "-l", output_uncompressed_paths["posts"]]
-    ).split()
-    line_count = int(line_count_str)
-
     with output_uncompressed_paths["posts"].open(
         mode="r", encoding="utf-8"
     ) as posts_csv_fd:
+        line_count = 0
+        counter_reader = csv.reader(posts_csv_fd)
+        for _row in counter_reader:
+            line_count += 1
         line_count -= 1  # remove header
 
         log.info("%d posts to import", line_count)