import numpy as np
import matplotlib.pyplot as plt
import sympy as sym
import math
import os
import subprocess
import fileinput
import re
import matlab.engine
import sys



e_1 = [1,0]
e_2 = [0,1]
e_3 = [-1,1]
e_4 = [1,-1]
e_5 = [-1,-1]



print("e_1:", e_1)
print("e_2:", e_2)
print("e_3:", e_3)
print("e_2:", e_4)
print("e_3:", e_5)
print("math.atan2(e_1[1], e_1[0]):", math.atan2(e_1[1], e_1[0]))

print("math.atan2(e_2[1], e_2[0]):", math.atan2(e_2[1], e_2[0]))
print("math.atan2(e_3[1], e_3[0]):", math.atan2(e_3[1], e_3[0]))
print("math.atan2(e_4[1], e_4[0]):", math.atan2(e_4[1], e_4[0]))
print("math.atan2(e_5[1], e_5[0]):", math.atan2(e_5[1], e_5[0]))