Why there is no any errors?

Question

list = [5j]
print (list)

Answer 1

5j is a complex number: 5 * sqrt(-1)

cplx=5j

print(cplx.real, cplx.imag, cplx.conjugate())
# 0.0 5.0 -5j

print(cplx * cplx)
# (-25+0j)

print(cplx % 2)
#TypeError: can't mod complex numbers