fix event loop is closed in win10

CHANGELOG.md

@@ -140,3 +140,7 @@
 ## 4.1.0(2021-01-11)
 * 功能
     - aio http session使用自定义timeout，可以和cache兼容使用（默认的timeout为什么不行，原因不明……）；
+
+## 4.1.1(2021-01-16)
+* bugfix
+    - 修复(workaround)win下结束爬取后报错的问题

src/__main__.py

@@ -1,3 +1,4 @@
+import sys
 import datetime
 
 from src.crawl import item_crawler
@@ -6,6 +7,9 @@
 
 if __name__ == '__main__':
 
+    if sys.version_info[:2] == (3, 7):
+        asyncio.set_event_loop_policy(asyncio.WindowsProactorEventLoopPolicy())
+
     # start
     start = datetime.datetime.now()
     log.info("Start Time: {}".format(start))

src/crawl/item_crawler.py

@@ -1,6 +1,6 @@
 import re
-import asyncio
 import math
+import asyncio
 
 # from tqdm import tqdm
 
@@ -59,8 +59,7 @@ def csgo_all_categories():
 def enrich_item_with_price_history(csgo_items, crawl_steam_async=True):
     # crawl price for all items
     if crawl_steam_async:
-        # asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
-        asyncio.run(history_price_crawler.async_crawl_history_price(csgo_items))
+        asyncio.get_event_loop().run_until_complete(history_price_crawler.async_crawl_history_price(csgo_items))
     else:
         history_price_crawler.crawl_history_price(csgo_items)
     return csgo_items