import sympy as sp
from IPython.display import display
def f_arg_abs(z):
    return sp.arg(z) ,sp.Abs(z)
z = sp.Symbol("z",comlex=True)
th = sp.Symbol("theta",real=True)
r = sp.Symbol("r",posirive=True)
z1,z2,z3 = sp.symbols("z1:4",complex=True)

z1=1/sp.sqrt(2)+1/sp.sqrt(2)*sp.I
z2=sp.sqrt(3)+sp.I
z3=-sp.I
k=0

for i in z1,z2,z3:
    k += 1
    print("問題　（{}）".format(k))
    display(k)
    th,r = f_arg_abs(i)
    print("偏角は")
    display(th)
    print("絶対値は")
    display(r)