grp Module¶

The grp module provides access to the Unix group database (e.g., /etc/group). It is Unix-only.

Unix-only

The grp module is not available on Windows and may not be available on some Python builds.

Complexity Reference¶

Operation	Time	Space	Notes
`grp.getgrnam(name)`	O(n)	O(1)	Linear scan of group database in many implementations
`grp.getgrgid(gid)`	O(n)	O(1)	Linear scan of group database in many implementations
`grp.getgrall()`	O(n)	O(n)	Reads all group entries

import grp

# Lookup group by name - O(n)
group = grp.getgrnam('staff')
print(group.gr_name, group.gr_gid)

import grp

# Lookup group by id - O(n)
group = grp.getgrgid(20)
print(group.gr_name, group.gr_mem)

import grp

# List all groups - O(n)
for entry in grp.getgrall():
    print(entry.gr_name)