human
Solve the following python programming problem given the following code:
# Load results and create a bundles with extracted quantities for each
# interaction strength.
trapping_2u2d_files = [
    glob.glob(f'{data_dir}/trapping_2u2d/{u}/*.json')
    for u in [0.0, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0]]
trapping_2u2d_bundles = [InstanceBundle(
    experiments=[load_experiment(file) for file in files],
    numerics_transform=parasitic_cphase_compensation(0.138),
    steps=range(11),
    rescale_steps=range(11)) for files in trapping_2u2d_files]

# Simulate the exact numerical results that are used as a reference.
total_steps = sum(len(bundle.steps) for bundle in trapping_2u2d_bundles)
with tqdm(range(total_steps)) as progress:
    def post_run(_1, _2):
        progress.update()
    for bundle in trapping_2u2d_bundles:
        bundle.cache_exact_numerics(post_run_func=post_run)

# Use shared rescaling values among compatible problem instances.
apply_rescalings_to_bundles(find_bundles_rescalings(trapping_2u2d_bundles))

plot_quantity(trapping_2u2d_bundles, 'post_selection', show_std_dev=True);

plot_quantity(trapping_2u2d_bundles, 'scaling', show_std_error=True);

plot_quantity(trapping_2u2d_bundles, 'charge_spin_density', show_std_error=True);

plot_quantity(trapping_2u2d_bundles, 'charge_spin_spreading', show_std_error=True);

plot_quantity(trapping_2u2d_bundles, 'charge_spin_spreading_dt', show_std_error=True);
Given the above code, generate some markdown instructions for it.
assistant
#Here is the Python program you requested.

Trapping Potential N=4