import re
s='new File()\nnew\nFile()\nthere is a new File()\nnew\n \n \n \nFile()\nthere is not a matching pattern here File() new\nnew File() test new File() occurs twice on this line'
pattern = r'new\s+File\s*\(\s*\)'
for m in re.finditer(pattern, s):
	linenums = [s[:m.start()].count('\n') + 1]
	for _ in range(m.group().count('\n')):
		linenums.append(linenums[-1] + 1)
	print('{} Found on line {}'.format(re.sub(r'\s+', ' ', m.group()), ", ".join(map(str,linenums))))
 

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