Global variables, functions, libraries not accessible inside function in python.NET

[Pravin Dalve]

I was testing following code in python script user model

import numpy as np
from scipy.optimize import curve_fit

# Define the function to fit
def func(x, a, b, c):
    #import numpy as np
    return a * np.exp(-b * x) + c

# Generate sample data
x_data = np.linspace(0, 4, 50)
y_data = func(x_data, 2.5, 1.3, 0.5) + 0.2 * np.random.normal(size=len(x_data))

# Fit the data
initial_guess = [1, 1, 1]  # Initial parameter guess
params, _ = curve_fit(func, x_data, y_data, initial_guess)

# Print the estimated parameters
Flowsheet.WriteMessage(str(params[0]))
Flowsheet.WriteMessage(str(params[1]))
Flowsheet.WriteMessage(str(params[2]))

In function definition func is not able to access numpy library which is imported at top. If I am explicitly importing library inside the function the code works. I have faced similar issue when I was trying to use a function inside another function.

Overall it seems that in python.Net we are not able to access global functions, variables and libraries inside functions. Any thoughts on this???

[Daniel Medeiros]

try this:

def func(x, a, b, c):
    global np
    return a * np.exp(-b * x) + c