for line in fileinput.input(fileName, inplace=1, backup='.bak'):
for before, after in REPLACEMENTS:
line = re.sub("(\W|^)(%s)(\W|$)" % before, r"\1%s\3" % after, line.rstrip('\r\n'))
for line in fileinput.input(fileName, inplace=1, backup='.bak'):
for before, after in REPLACEMENTS:
line = re.sub("(\W|^)(%s)(\W|$)" % before, r"\1%s\3" % after, line.rstrip('\r\n'))