python-3.x - BeautifulSoup:无法将NavigableString转换为字符串

Question

我开始学习Python，并决定编写一个简单的刮板代码。我遇到的一个问题是我无法将NavigableString转换为常规字符串。

使用BeautifulSoup4和Python 3.5.1。我是否应该咬一口子，然后转到Python和BeautifulSoup的早期版本？还是有办法
我可以编写自己的函数以将NavigableString转换为常规unicode字符串吗？

for tag in soup.find_all("span"):
    for child in tag.children:
        if "name" in tag.string: #triggers error, can't compare string to NavigableString/bytes
            return child

    #things i've tried:
    #if "name" in str(tag.string)
    #if "name" in unicode(tag.string) #not in 3.5?
    #if "name" in strring(tag.string, "utf-8")
    #tried regex, didn't work. Again, doesn't like NavigableSTring type. 
    #... bunch of other stuff too!

Answer 1

当我应该编码时，我尝试解码:

str(child.encode('utf-8'))