Question

当尝试用Beautiful Soup替换XML中的某些元素时，我发现必须使用soup.find_all().string.replace_with()来替换所需的元素。但是，我遇到了一个问题，即soup.find_all()方法仅返回类型为None的元素。

因此，我试图将问题分解为尽可能基本的XML：

from bs4 import BeautifulSoup as BS

xml = """
<xml>
    <test tag="0"/>
    <test tag="1"/>
</xml>"""

soup = BS(xml, 'xml')
for elem in soup.find_all("test"):
    print('Element {} has type {}.'.format(elem, elem.type))

给出完全相同的内容：

Element <test tag="0"/> has type None.
Element <test tag="1"/> has type None.

如果有人指出问题出在哪里，我会很高兴。

预先感谢

Answer 1

我不确定您要查找的输出内容是什么，但是您可以通过以下方式替换标记属性：

this.watchId = Geolocation.watchPosition((response) => {
    this.currentWatchLocationTimeout = this.currentWatchLocationTimeout + WATCH_LOCATION_TIMEOUT;

    currentPosition.lat = this.convertToDecimalPoints(response.coords.latitude);
    currentPosition.lng = this.convertToDecimalPoints(response.coords.longitude);

    //... additional code

}, (error) => {
    this.onGeolocationErrorOccurCallback(error);
}, {
    enableHighAccuracy: true,
    distanceFilter: 5,
    showLocationDialog: true
});

输出：

from bs4 import BeautifulSoup as BS

xml = """
<xml>
    <test tag="0"/>
    <test tag="1"/>
</xml>"""

replace_list = ['0']
replacement = '2'

soup = BS(xml, 'xml')
for elem in soup.find_all("test"):
    if elem['tag'] in replace_list:
        elem['tag'] = replacement
    #print('Element {} has type {}.'.format(elem, elem.name))

xml = str(soup)

print (xml)

使用Beautiful Soup进行XML解析的问题

1 个答案: