#!/usr/bin/python

def process(filename):
	"Process ATOM records in PDB file"
	f = file(filename)
	atoms = []
	for line in f:
		fields = line.split()
		if fields[0] != "ATOM":
			continue
		atom = (fields[2], fields[3], fields[4], int(fields[5]),
				float(fields[6]), float(fields[7]), float(fields[8]))
		atoms.append(atom)
	f.close()
	print len(atoms), "atoms in", filename

if __name__ == "__main__":
	import sys
	for filename in sys.argv[1:]:
		process(filename)