Python 3 code
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# 2D Julia set with complex arrays (c=-0.7454294)
# (matplotlib module)
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import numpy as np            # import numpy module
import matplotlib.pyplot as plt      # import matplotlib module
n = 9 # set number of cycles
Cx =  -0.7454294  # set c parameter real part value
Cy = 0 # set c parameter imaginary part value
C = Cx + 1j*Cy
L = 1.7 # set square area side
M = 2024 # set side number of pixels

x = np.linspace(-L,L,M)        # x variable array
y = np.linspace(-L,L,M)        # y variable array
X,Y = np.meshgrid(x,y,sparse=True)    # square area grid
Z = X + 1j*Y # complex plane area
for k in range(1,n+1): # recursion cycle
  Z1 = Z**2 + C   #alternative Z1 = Z**4 + C
  Z = Z1
W = np.e**(-abs(Z)) # smoothed sum moduls

plt.imshow(W,interpolation=’nearest’, cmap=plt.cm.nipy_spectral)
plt.axis("off")
plt.show()              # plot image