buffer = arcpy.Buffer_analysis(roads, "in_memory/buffer", "1000 Feet"), "", "", "ALL" )
Yo,
you have two close brackets ), but only one open bracket (... This is invalid syntax, hence the syntax error.
The number of brackets need to balance, I presume you actually wanted this:
buffer = arcpy.Buffer_analysis(roads, "in_memory/buffer", "1000 Feet"), "", "", "ALL" )
buffer = arcpy.Buffer_analysis(roads, "in_memory/buffer", "1000 Feet", "", "", "ALL" )
And I presume you meant this?buffer = arcpy.Buffer_analysis(roads, "in_memory/buffer", "1000 Feet", "", "", "ALL" )