NameError: name 'theta_A' is not defined

[k4sh4n1]

I have these cells on a notebook:

import handcalcs.render
import forallpeople
forallpeople.environment('structural', top_level=True)

from sympy import *

%%render sympy
theta_A # Parameter
L # Parameter
Delta_B # Parameter

But I'm receiving this error:

NameError: name 'theta_A' is not defined

Question

Symbolic equations

I have studied this post: #22 (comment) But it's too complex.

I just simply want to display symbolic equations. How can I do that? I'm confused 😕

[Klummel69]

You should familiarize yourself with how sympy works. You must first assign sympy objects to the variables, e.g.

import sympy as sp
theta_A = sp.symbols("theta_A")
L = sp.symbols("L")
Delta_B = sp.symbols("Delta_B")

As described in the README of handcalcs, Sympy does not need handcalcs to render the equations. Only if the equations are to be calculated in handcalcs style at the end, handcalc makes sense.
See example in the README.