Python ElementTree 默认命名空间

Python ElementTree 默认命名空间？

python
import xml.etree.ElementTree as ET
# 定义XML文档字符串
xml_str = '''
    Python Programming
    John Doe
'''
# 解析XML文档
root = ET.fromstring(xml_str)
# 获取根元素的标签名
tag = root.tag
print(tag)  # 输出：{http://example.com/books}book

python
import xml.etree.ElementTree as ET
from xml.etree.ElementTree import QName
# 定义XML文档字符串
xml_str = '''
    Python Programming
    John Doe
'''
# 解析XML文档
root = ET.fromstring(xml_str)
# 获取根元素的标签名（不带命名空间）
tag = QName(root.tag).localname
print(tag)  # 输出：book

python
import xml.etree.ElementTree as ET
# 定义XML文档字符串
xml_str = '''
    
        Python Programming
        John Doe
    
    
        Java Programming
        Jane Smith
    
'''
# 注册命名空间前缀
ET.register_namespace('', 'http://example.com/books')
# 解析XML文档
tree = ET.ElementTree(ET.fromstring(xml_str))
# 获取根元素
root = tree.getroot()
# 使用命名空间前缀来选择元素
titles = root.findall('ns:book/ns:title', namespaces={'ns': 'http://example.com/books'})
for title in titles:
    print(title.text)