使用 Beautifulsoup，我需要讀取 KML 文件，并在包含 LineString 部分的所有地標中插入一個新塊。這是 KML 文件：<?xml version="1.0" encoding="utf-8"?><kml xmlns="http://www.opengis.net/kml/2.2"> <Document> <name>Document.kml</name> <Placemark> <name>My track</name> <LineString> <coordinates>-0.376291,43.296237,199.75 -0.377381,43.29405</coordinates> </LineString> </Placemark> </Document></kml>以下不起作用：from bs4 import BeautifulSoup as Soupwith open('input.kml') as data: kml_soup = Soup(data, 'lxml-xml') # Parse as XMLplacemarks = kml_soup.find_all('Placemark')for pm in placemarks: if pm.find('LineString'): print("LS found") #How to insert new elements before LineString? #<Style><LineStyle><width>3</width></LineStyle></Style> style = kml_soup.new_tag("Style") style.string = "<LineStyle><width>3</width></LineStyle>" #AttributeError: 'NoneType' object has no attribute 'insert_before' pm.string.insert_before(style)
1 回答
蝴蝶不菲
TA貢獻1810條經(jīng)驗 獲得超4個贊
您可能使用了錯誤的對象。嘗試以下操作。
placemarks = kml_soup.find_all('Placemark')
for pm in placemarks:
LineString = pm.find('LineString')
if LineString:
print("LS found")
style = kml_soup.new_tag("Style")
style.string = "<LineStyle><width>3</width></LineStyle>"
LineString.insert_before(style) # Use LineString
這是另一個解決方案。
from simplified_scrapy import SimplifiedDoc,utils
html = utils.getFileContent('input.kml')
doc = SimplifiedDoc(html)
placemarks = doc.selects('Placemark')
for pm in placemarks:
LineString = pm.select('LineString')
if LineString:
print("LS found")
style = "<Style><LineStyle><width>3</width></LineStyle></Style>\n"+" "*6
LineString.insertBefore(style)
# print (doc.html)
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