Cannot open — full path resolution failed

SQLITE_CANTOPEN_FULLPATH (1294) is returned when SQLite cannot convert a relative database path to an absolute path using the OS-provided realpath() or equivalent.

1. 1Path contains invalid components or exceeds PATH_MAX.
2. 2Intermediate directory in the path does not exist.
3. 3OS-level path resolution failure (e.g., chroot environment).

sqlite3_open() with a relative path in an environment where path resolution fails.

import sqlite3
try:
    conn = sqlite3.connect('nonexistent_dir/sub/my.db')
except sqlite3.OperationalError as e:
    print(e)

sqlite3.OperationalError: unable to open database file

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