From e749fe3b4ef17756ebcf45147a3a1add8fdedb60 Mon Sep 17 00:00:00 2001
From: Ryan Chen <54162655+ChNgineer@users.noreply.github.com>
Date: Tue, 12 Dec 2023 20:04:11 -0500
Subject: [PATCH] Implemented suggested dropping of empty dataframes with
 appropriate error handling

---
 yfinance/multi.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/yfinance/multi.py b/yfinance/multi.py
index f9e0332f3..a508779b0 100644
--- a/yfinance/multi.py
+++ b/yfinance/multi.py
@@ -216,8 +216,21 @@ def download(tickers, start=None, end=None, actions=False, threads=True, ignore_
         return shared._DFS[ticker]
 
     try:
+        for key , df in shared._DFS.items():
+            assert not df.empty
         data = _pd.concat(shared._DFS.values(), axis=1, sort=True,
                           keys=shared._DFS.keys())
+    except AssertionError:
+        dfs = {}
+        empty_dfs = []
+        for key, df in shared._DFS.items():
+            if not df.empty:
+                dfs[key] = df
+            else:
+                empty_dfs.append(key)
+        logger.error(f'{empty_dfs} tickers have no data in given time frame. Dropping {empty_dfs} and continuing...')
+        data = _pd.concat(shared._DFS.values(), axis=1, sort=True,
+                          keys=dfs.keys())
     except Exception:
         _realign_dfs()
         data = _pd.concat(shared._DFS.values(), axis=1, sort=True,