import sys
import collections

print(sys.version_info)
i = sys.version_info.major
print(i)

# namedtuple
Buch = collections.namedtuple("Buch", ["title", "autor", "seitenzahl", "ISBN"])
print(type(Buch))
print(Buch._fields)

py = Buch("The Art of Computer Programming", "Donald E. Knuth", 3168, "978-0321751041")
print(py)
print(py.autor)
print(py[1])