[Tutor] appending to a file on a new line

[ADRIAN KELLY]

Hi everyone,
is there an easy way to write to a file (that already exists with data contained) on a new line.  I understand that the file pointer appends where it left off but how do i write to the next line or even skip a line if possible?
 
User_info=open("C:\\Documents and Settings\\akelly\\Desktop\\details.txt",'a')
User_info.write("\n".join(Details))

 
all the best,  
Adrian  		 	   		  
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