[SOLVED] [Beautifulsoup] Find if element exists, and edit/append?

[Winfried]

Hello,

I read BS's documentation, but can't figure out something very simple: Find if an element exists at a specific location in the tree; If it exists, change its text; If it doesn't, insert it right below the parent.

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from bs4 import BeautifulSoup   """ <?xml version="1.0" encoding="utf-8"?> <kml xmlns="http://www.opengis.net/kml/2.2">  <Document>   <name>    EDIT ME   </name>  </Document> </kml> """ soup = BeautifulSoup(open('input.kml', 'r'), 'xml')   #BAD name = soup.kml.Document.name name = soup.select('kml > Document > name') if name:     print("Found")     name.string="New name" #no change !     name.string.replace_with("New name") #Error else:     print("Not found")     name = soup.new_tag("name")     name.string = "New tag"       #doc= soup.kml.Document     #doc = soup.select('kml.Document')     doc = soup.select('kml > Document')     doc.append(name) #No change !   print(soup.prettify())

Thank you.

[snippsat]

If a tag tag doesn't exits it will give AttributeError,then catch this error and insert a new tag.

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from bs4 import BeautifulSoup   """ <?xml version="1.0" encoding="utf-8"?> <kml xmlns="http://www.opengis.net/kml/2.2">  <Document>   <name>    EDIT ME   </name>  </Document> </kml> """   soup = BeautifulSoup(open('input.xml'), 'xml') try:     name = soup.select_one('kml > Document > name')     name.string = 'hello' except (AttributeError, NameError):     doc = soup.find('Document')     new_tag = soup.new_tag("car")     new_tag.string = "Blue color"     doc.append(new_tag)

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>>> print(soup.prettify()) <?xml version="1.0" encoding="utf-8"?> <kml xmlns="http://www.opengis.net/kml/2.2">  <Document>   <name>    hello   </name>  </Document> </kml>

if search eg for soup.select_one('kml > Document > name_99')

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>>> print(soup.prettify()) <?xml version="1.0" encoding="utf-8"?> <kml xmlns="http://www.opengis.net/kml/2.2">  <Document>   <name>    EDIT ME   </name>   <car>    Blue color   </car>  </Document> </kml>

[Winfried]

Thanks much.