Create tools.py

tools.py

@@ -0,0 +1,24 @@
+def integrate(model, init, tmax, cg=None):
+    """
+    Iterate discrete time model
+
+    Args
+    ====
+    model (func) function that describes the discrete time model with input as follow (n, t, pars)
+    init (list) initial values
+    tmax (int) maximum time
+    cg (Config) parameters
+
+    Return
+    ======
+    list of the time and population values
+    """
+    population = [init]
+    t = 0
+    t_series = [t]
+    while t < tmax:
+        pop_t = model(population[-1], cg) if cg is not None else model(population[-1])
+        population.append(pop_t)
+        t += 1
+        t_series.append(t)
+    return (t_series, population)