Recipe Python Beginner 5 min
Fit a curve to data with error bars and draw a confidence band
Afterwards you can fit a model to data with known uncertainties, report parameter errors you can defend, and shade a confidence band around the fitted curve.
2 of 3 tutorials
Tool Python Intermediate 30 min
solve_ivp from the ground up: the pendulum beyond small angles
Afterwards you can integrate any system of first-order ODEs with solve_ivp, control its accuracy, and pull events such as zero crossings out of the solution.