def my_function(x,a, c):
    return a/x + c

params = {
'figure.figsize': [15, 10]
}
plt.rcParams.update(params)


ax = plt.subplot(111)
ax.spines["top"].set_visible(False)
ax.spines["right"].set_visible(False)
angle, inte = sp.loadtxt("Current.csv", skiprows=10, unpack=1, delimiter=',')
err_angle = 1

# Our initial guess for the parameters

guess_a=2
guess_c=1
p0=[guess_a, guess_c]# Array that of initial parameter values

fit = curve_fit(my_function, x, y, p0=p0)
x=sp.arange(0.3,7,0.001)
data_fit = my_function(x, *fit[0])