import numpy as np

source = np.arange(6)
basic_slice = source[1:4]
advanced_index = source[[1, 2, 3]]
explicit_copy = source[1:4].copy()

candidates = {
    "basic_slice": basic_slice,
    "advanced_index": advanced_index,
    "explicit_copy": explicit_copy,
}

for name, candidate in candidates.items():
    print(
        f"{name}: shares_memory={np.shares_memory(source, candidate)}, "
        f"base_is_none={candidate.base is None}"
    )

basic_slice[0] = 99
advanced_index[1] = 77
explicit_copy[2] = 55

print("source after edits:", source)
print("basic_slice after edit:", basic_slice)
print("advanced_index after edit:", advanced_index)
print("explicit_copy after edit:", explicit_copy)