def test_sequencetools_interlace_sequences_01():
k = range(100, 103)
l = range(200, 201)
m = range(300, 303)
n = range(400, 408)
t = sequencetools.interlace_sequences(k, l, m, n)
assert t == [100, 200, 300, 400, 101, 301, 401, 102, 302, 402, 403, 404, 405, 406, 407]
def test_sequencetools_interlace_sequences_02():
a = 'introductory'
b = 'text'
t = sequencetools.interlace_sequences(a, b)
t = ''.join(t)
assert t == 'itnetxrtoductory'