import os
print (os.ctermid)
print (os.environ)
print (os.environb)
print (os.chdir)
print (os.fchdir)
print (os.getcwd)
print (os.fsencode)
print (os.fsdecode)
print (os.fspath)
print (os.pathlike)
print (os.getenv)
print (os.getenvb)
print (os.get_exec_path)
print (os.os.getegid())
print (os.geteuid())
print (os.getgid())
print (os.getgrouplist())
print (os.getgroups())
print (os.getlogin())
print (os.getpgid(pid))
print (os.getpgrp())
print (os.getpid())
print (os.getppid())
print (getpriority(which, who))
print (os.getresuid())
print (os.getresgid())
print (os.getuid())
print (os.initgroups(username, gid))
print (os.putenv(key, value))
print (os.setegid(egid))
print (os.seteuid(euid))
print (os.setgid(gid))
print (os.setgroups(groups))
print (os.setpgrp())
print (os.setpgid(pid, pgrp))
print (os.setpriority(which, who, priority))
print (os.setregid(rgid, egid))
print (os.setresgid(rgid, egid, sgid))
print (os.setresuid(ruid, euid, suid))
print (setreuid(ruid, euid))
print (os.getsid(pid))
print (os.setsid())
print (os.setuid(uid))
print (os.strerror(code))
print (os.umask(mask))
print (os.uname())
print (os.unsetenv(key))




















