From f1c40d907c60931f3c4bafac64e56d0114f53fb8 Mon Sep 17 00:00:00 2001
From: Nick Young <nick.young@auckland.ac.nz>
Date: Wed, 17 Aug 2022 11:39:30 +1200
Subject: [PATCH] CLI: Raise FileExistsError to prevent overwriting files

---
 facebook_scraper/__init__.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/facebook_scraper/__init__.py b/facebook_scraper/__init__.py
index 682d2803..d512b939 100644
--- a/facebook_scraper/__init__.py
+++ b/facebook_scraper/__init__.py
@@ -18,6 +18,7 @@
 import time
 from datetime import datetime, timedelta
 import re
+import os
 
 
 _scraper = FacebookScraper()
@@ -402,6 +403,9 @@ def write_posts_to_csv(
     if encoding is None:
         encoding = locale.getpreferredencoding()
 
+    if os.path.isfile(filename):
+        raise FileExistsError(f"{filename} exists")
+
     if filename == "-":
         output_file = sys.stdout
     else: