From e260c1679500dffa67a74ba2ca6285432f440aea Mon Sep 17 00:00:00 2001
From: msincenselee <incenselee@hotmail.com>
Date: Tue, 25 Jan 2022 16:08:14 +0800
Subject: [PATCH] =?UTF-8?q?[bugfix]=20=E8=8E=B7=E5=8F=96csv=E6=9C=80?=
 =?UTF-8?q?=E5=90=8E=E6=97=A5=E6=9C=9F=E8=AE=B0=E5=BD=95?=
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---
 vnpy/trader/utility.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/vnpy/trader/utility.py b/vnpy/trader/utility.py
index e31e3c33..ff888fba 100644
--- a/vnpy/trader/utility.py
+++ b/vnpy/trader/utility.py
@@ -361,7 +361,14 @@ def get_csv_last_dt(file_name, dt_index=0, dt_format='%Y-%m-%d %H:%M:%S', line_l
             datas = row.split(',')
             if len(datas) > dt_index + 1:
                 try:
-                    last_dt = datetime.strptime(datas[dt_index], dt_format)
+                    s = datas[dt_index]
+                    # 检查毫秒不要超过6位长度
+                    if '.' in dt_format and '.' in s:
+                        i = s.find('.')
+                        if len(s) - i -1 > 6:
+                            len_ms = len(s) - i -1
+                            s = s[:-(len_ms-6)]
+                    last_dt = datetime.strptime(s, dt_format)
                     return last_dt
                 except:  # noqa
                     return None