以以下示例为例:http: //docs.djangoproject.com/en/dev/topics/db/aggregation/#filter-and-exclude
Publisher.objects.filter(book__rating__gt=3.0).annotate(num_books=Count('book'))
反正有没有过滤器只适用于注释,所以它会返回所有发布者,有些具有num_books = 0？
这段代码:
for root, dirs, files in os.walk('.'):
print(root)
给我这个错误:
UnicodeEncodeError: 'utf-8' codec can't encode character '\udcc3' in position 27: surrogates not allowed
如何在没有像这样的有毒字符串的情况下浏览文件树？