Function choplist

pattern/web/pdf/utils.py:91–99

Groups every n elements of the list.

(n, seq)

# choplist
def choplist(n, seq):
    """Groups every n elements of the list."""
    r = []
    for x in seq:
        r.append(x)
        if len(r) == n:
            yield tuple(r)
            r = []
    return

# nunpack
def nunpack(s, default=0):