>>> from std_update import std_update

>>> arname = 'AR_2526.csv'




>>> grades_name = 'grades_11_PRG_2526.csv'
>>> copyname = arname.replace('csv', 'copy')
>>> with open(arname, 'r') as f, open(copyname, 'w') as fcopy:
... 	for line in f:
... 		nl = fcopy.write(line)

>>> res = std_update(grades_name, arname)

>>> with open(arname, 'r') as f, open('AR_2526_11.ref', 'r') as fref:
... 	l = f.readline()
... 	l = f.readline()
... 	lref = fref.readline()
... 	lref = fref.readline()
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	oeq = lref == l == ''

>>> res == (5, 4, ['9876']) and oeq
True

>>> with open(copyname, 'r') as f, open(arname, 'w') as fcopy:
... 	for line in f:
... 		nl = fcopy.write(line)




>>> grades_name = 'grades_12_PRG_2526.csv'
>>> copyname = arname.replace('csv', 'copy')
>>> with open(arname, 'r') as f, open(copyname, 'w') as fcopy:
... 	for line in f:
... 		nl = fcopy.write(line)

>>> res = std_update(grades_name, arname)

>>> with open(arname, 'r') as f, open('AR_2526_12.ref', 'r') as fref:
... 	l = f.readline()
... 	l = f.readline()
... 	lref = fref.readline()
... 	lref = fref.readline()
... 	l = f.readline()
... 	lref = fref.readline()
... 	while l != '' and lref == l:
... 		l = f.readline()
... 		lref = fref.readline()
... 	oeq = lref == l == ''

>>> res == (5, 3, ['2233', '4431']) and oeq
True

>>> with open(copyname, 'r') as f, open(arname, 'w') as fcopy:
... 	for line in f:
... 		nl = fcopy.write(line)