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sympy.Abs

Python. Called in 2 tutorials; each line below leads to its place in the tutorial.

ToolPythonBeginner

SymPy from the ground up: where the pendulum's 1.74 % comes from

theta_dot_phi = theta_dot_phi.subs(sp.Abs(sp.cos(phi)), sp.cos(phi))

ToolPythonAdvanced

Von Neumann stability analysis with SymPy: the leapfrog Courant limit

print(sp.Abs(sp.exp(sp.I * k_plain * dx_plain)), " vs ", sp.Abs(sp.exp(sp.I * k * dx)))