<s>
RPyC	B-Library
(	O
pronounced	O
are-pie-see	O
)	O
,	O
or	O
Remote	O
Python	B-Language
Call	O
,	O
is	O
a	O
Python	B-Language
library	O
for	O
remote	B-Operating_System
procedure	I-Operating_System
calls	I-Operating_System
(	O
RPC	O
)	O
,	O
as	O
well	O
as	O
distributed	B-Architecture
computing	I-Architecture
.	O
</s>
<s>
Unlike	O
regular	O
RPC	O
mechanisms	O
,	O
such	O
as	O
ONC	B-Protocol
RPC	I-Protocol
,	O
CORBA	B-Architecture
or	O
Java	B-Language
RMI	I-Language
,	O
RPyC	B-Library
is	O
transparent	O
,	O
symmetric	O
,	O
and	O
requires	O
no	O
special	O
decoration	O
or	O
definition	O
languages	O
.	O
</s>
<s>
Allows	O
for	O
synchronous	O
and	O
asynchronous	B-Architecture
operation	O
:	O
</s>
<s>
RPyC	B-Library
gives	O
the	O
programmer	O
a	O
slave	O
python	B-Language
interpreter	O
at	O
his	O
or	O
her	O
control	O
.	O
</s>
<s>
In	O
this	O
essence	O
,	O
RPyC	B-Library
is	O
different	O
from	O
other	O
RPCs	O
,	O
that	O
require	O
registration	O
of	O
resources	O
prior	O
to	O
accessing	O
them	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
using	O
RPyC	B-Library
is	O
much	O
more	O
straightforward	O
,	O
but	O
this	O
comes	O
at	O
the	O
expense	O
of	O
security	O
(	O
you	O
cannot	O
limit	O
access	O
)	O
.	O
</s>
<s>
RPyC	B-Library
is	O
intended	O
to	O
be	O
used	O
within	O
a	O
trusted	O
network	O
,	O
there	O
are	O
various	O
schemes	O
including	O
VPN	B-Application
for	O
achieving	O
this	O
.	O
</s>
<s>
Async	O
is	O
a	O
proxy	O
wrapper	O
,	O
meaning	O
,	O
it	O
takes	O
a	O
NetProxy	O
and	O
returns	O
another	O
that	O
wraps	O
it	O
with	O
asynchronous	B-Architecture
functionality	O
.	O
</s>
<s>
Originally	O
,	O
RPyC	B-Library
was	O
developed	O
for	O
managing	O
distributed	O
testing	O
of	O
products	O
over	O
a	O
range	O
of	O
different	O
platforms	O
(	O
all	O
capable	O
of	O
running	O
python	B-Language
)	O
.	O
</s>
<s>
However	O
,	O
RPyC	B-Library
has	O
evolved	O
since	O
then	O
,	O
and	O
now	O
its	O
use	O
cases	O
include	O
:	O
</s>
<s>
RPyC	B-Library
is	O
based	O
on	O
the	O
work	O
of	O
Eyal	O
Lotem	O
(	O
aka	O
Lotex	O
)	O
on	O
PyInvoke	O
,	O
which	O
is	O
no	O
longer	O
maintained	O
.	O
</s>
<s>
The	O
first	O
public	O
release	O
was	O
1.20	O
,	O
which	O
allowed	O
for	O
symmetric	O
and	O
transparent	O
RPC	O
,	O
but	O
not	O
for	O
asynchronous	B-Architecture
operation	O
.	O
</s>
<s>
Version	O
2.X	O
,	O
the	O
first	O
release	O
of	O
which	O
was	O
2.2	O
,	O
added	O
thread	B-Operating_System
synchronization	O
and	O
the	O
Async	O
concept	O
,	O
which	O
can	O
be	O
used	O
as	O
a	O
superset	O
of	O
events	O
.	O
</s>
<s>
RPyC	B-Library
3	O
is	O
a	O
complete	O
rewrite	O
of	O
the	O
library	O
,	O
adding	O
a	O
capability-based	O
security	O
model	O
,	O
explicit	O
services	O
,	O
and	O
various	O
other	O
improvements	O
.	O
</s>
