>>> from patients11 import filter_fever_interval

>>> r = filter_fever_interval('pats1.txt', 'pats1in.txt', 'pats1out.txt', 37.0, 38.0)
>>> with open('pats1in.txt', 'r') as f, open('pats1in37.0-38.0.txt', 'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsin = lref == l == '' 
>>> with open('pats1out.txt', 'r') as f, open('pats1out37.0-38.0.txt',  'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsout = lref == l == ''
>>> r == (9, 4, 5) and igualsin and igualsout    # doctesttag: +TAG=1_filter_fever_interval
True

>>> r = filter_fever_interval('pats1.txt', 'pats1in.txt', 'pats1out.txt', 37.1, 38.0)
>>> with open('pats1in.txt', 'r') as f, open('pats1in37.1-38.0.txt', 'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsin = lref == l == '' 
>>> with open('pats1out.txt', 'r') as f, open('pats1out37.1-38.0.txt',  'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsout = lref == l == ''
>>> r == (9, 2, 7) and igualsin and igualsout    # doctesttag: +TAG=1_filter_fever_interval
True

>>> r = filter_fever_interval('pats1.txt', 'pats1in.txt', 'pats1out.txt', 38.0, 39.0)
>>> with open('pats1in.txt', 'r') as f, open('pats1in38.0-39.0.txt', 'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsin = lref == l == ''
>>> with open('pats1out.txt', 'r') as f, open('pats1out38.0-39.0.txt',  'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsout = lref == l == ''
>>> r == (9, 1, 8) and igualsin and igualsout   # doctesttag: +TAG=1_filter_fever_interval
True

>>> r = filter_fever_interval('pats1.txt', 'pats1in.txt', 'pats1out.txt', 38.0, 40.0)
>>> with open('pats1in.txt', 'r') as f, open('pats1in38.0-40.0.txt', 'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsin = lref == l == ''
>>> with open('pats1out.txt', 'r') as f, open('pats1out38.0-40.0.txt',  'r') as fref:
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	igualsout = lref == l == ''
>>> r == (9, 2, 7) and igualsin and igualsout   # doctesttag: +TAG=1_filter_fever_interval
True