AL-Zetoun - 1 year ago 33

Python Question

I have defined these functions in python :

`def Density(rho0,r,Rc,Rd):`

if r < Rc :

return rho0

elif r> Rc :

return rho0*np.exp(-(r-Rc)/Rd)

def Thickness_H(H0,r,Rh):

return H0*np.exp(r/Rh)

Now I want to use these two functions to write the final equation using these two function:

the function look like this( I don't know how can I put the first and second function into the function below:

`def Density_distribution(H0,Rh,r,z,rho0,Rc,Rd):`

return firstfunction*np.exp(-z/secondfunction)

and plot it:

`r = np.linspace(0.,10., 100)`

p =Density_distribution(H0,Rh,r,z,rho0,Rc,Rd)

plt.plot(r, p)

plt.show()

Thank you for your help

Answer

Simply call the functions to get their return value in any statement:

```
def Density_distribution(H0, Rh, r, z, rho0, Rc, Rd):
return Density(rho0, r, Rc, Rd) * np.exp(-z / Thickness_H(H0, r, Rh))
```

Or in case you receive the `rho0`

parameter as string in `Density_distribution`

, just convert it to a `float`

before calling the `Density`

function:

```
def Density_distribution(H0, Rh, r, z, rho0, Rc, Rd):
return Density(float(rho0), r, Rc, Rd) * np.exp(-z / Thickness_H(H0, r, Rh))
```