python - Why doesn't the + operator work between multi single line strings? -


this question has answer here:

i trying concatenate multi line string single line in python , it's giving me invalid syntax error.

 authheader = '<header></header>'   reqbody = '<s:envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope">'                   + authheader +                  '''<s:body xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xmlns:xsd="http://www.w3.org/2001/xmlschema">                 <getsnapshoturi xmlns="http://www.onvif.org/ver10/media/wsdl"><profiletoken>quality_h264</profiletoken></getsnapshoturi>                 </s:body>                 </s:envelope>                 '''

no need use + operator concatenate strings want spread out on multiple lines better readability. this:

s = (     "my long string"     "that spans multiple lines" )

the parser correctly deal , is part of python grammar (string literal concatentation. turning larger strings sequences of code ends being far more readable.

for more info, see python docs on strings states:

this feature particularly useful when want break long strings:

>>> text = ('put several strings within parentheses '             'to have them joined together.') >>> text 'put several strings within parentheses have them joined together.'

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