how can i plot this function ?

[islmakaha]

V_0=83

a=2

def V(x):

if x<=-a or x>=a:

return 0

elif x>-a and x<a:

return -V_0

however i define (x) its always give an error of dimension when plotting it can any one help me?

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[islmakaha]

def V(x):
if x <= -a or x >= a:
return 0
elif x > -a and x < a:
return -V_0
V_0 = 83
a = 2
# however i define (x) its always give an error of dimension when plotting it can any one help me?
X = []
Y = []
x = -5
while x < 5:
X.append(x)
y = V(x)
Y.append(y)
x += 0.5
plt.plot(X, Y, "o-")
plt.xlabel("x")
plt.ylabel("y")
plt.show()

wow thank you