<s>
Pyomo	B-Application
is	O
a	O
collection	O
of	O
Python	B-Language
software	O
packages	O
for	O
formulating	O
optimization	O
models	O
.	O
</s>
<s>
Pyomo	B-Application
was	O
developed	O
by	O
William	O
Hart	O
and	O
Jean-Paul	O
Watson	O
at	O
Sandia	O
National	O
Laboratories	O
and	O
David	O
Woodruff	O
at	O
University	O
of	O
California	O
,	O
Davis	O
.	O
</s>
<s>
Significant	O
extensions	O
to	O
Pyomo	B-Application
were	O
developed	O
by	O
Bethany	O
Nicholson	O
and	O
John	O
Siirola	O
at	O
Sandia	O
National	O
Laboratories	O
,	O
Carl	O
Laird	O
at	O
Purdue	O
University	O
,	O
and	O
Gabriel	O
Hackebeil	O
.	O
</s>
<s>
Pyomo	B-Application
is	O
an	O
open-source	O
project	O
that	O
is	O
freely	O
available	O
,	O
and	O
it	O
is	O
licensed	O
with	O
the	O
BSD	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
Pyomo	B-Application
is	O
developed	O
as	O
part	O
of	O
the	O
COIN-OR	B-Application
project	O
.	O
</s>
<s>
Pyomo	B-Application
is	O
a	O
popular	O
open-source	O
software	O
package	O
that	O
is	O
used	O
by	O
a	O
variety	O
of	O
government	O
agencies	O
and	O
academic	O
institutions	O
.	O
</s>
<s>
Pyomo	B-Application
allows	O
users	O
to	O
formulate	O
optimization	O
problems	O
in	O
Python	B-Language
in	O
a	O
manner	O
that	O
is	O
similar	O
to	O
the	O
notation	O
commonly	O
used	O
in	O
mathematical	O
optimization	O
.	O
</s>
<s>
Pyomo	B-Application
supports	O
an	O
object-oriented	O
style	O
of	O
formulating	O
optimization	O
models	O
,	O
which	O
are	O
defined	O
with	O
a	O
variety	O
of	O
modeling	O
components	O
:	O
sets	O
,	O
scalar	O
and	O
multidimensional	O
parameters	O
,	O
decision	O
variables	O
,	O
objectives	O
,	O
constraints	O
,	O
equations	O
,	O
disjunctions	O
and	O
more	O
.	O
</s>
<s>
Optimization	O
models	O
can	O
be	O
initialized	O
with	O
python	B-Language
data	O
,	O
and	O
external	O
data	O
sources	O
can	O
be	O
defined	O
using	O
spreadsheets	B-Application
,	O
databases	O
,	O
various	O
formats	O
of	O
text	O
files	O
.	O
</s>
<s>
Pyomo	B-Application
supports	O
both	O
abstract	O
models	O
,	O
which	O
are	O
defined	O
without	O
data	O
,	O
and	O
concrete	O
models	O
,	O
which	O
are	O
defined	O
with	O
data	O
.	O
</s>
<s>
In	O
both	O
cases	O
,	O
Pyomo	B-Application
allows	O
for	O
the	O
separation	O
of	O
model	O
and	O
data	O
.	O
</s>
<s>
Pyomo	B-Application
supports	O
dozens	O
of	O
solvers	B-Application
,	O
both	O
open	O
source	O
and	O
commercial	O
,	O
including	O
many	O
solvers	B-Application
supported	O
by	O
AMPL	B-Language
,	O
PICO	O
,	O
CBC	O
,	O
CPLEX	B-Application
,	O
IPOPT	B-Algorithm
,	O
and	O
GLPK	B-Application
.	O
</s>
<s>
Pyomo	B-Application
can	O
either	O
invoke	O
the	O
solver	B-Application
directly	O
or	O
asynchronous	O
with	O
a	O
solver	B-Application
manager	O
.	O
</s>
<s>
Solver	B-Application
managers	O
support	O
remote	O
,	O
asynchronous	O
execution	O
of	O
solvers	B-Application
,	O
which	O
supports	O
parallel	O
execution	O
of	O
Pyomo	B-Application
scripts	O
.	O
</s>
<s>
Solver	B-Application
interaction	O
is	O
performed	O
with	O
a	O
variety	O
of	O
solver	B-Application
interfaces	O
,	O
depending	O
on	O
the	O
solver	B-Application
being	O
used	O
.	O
</s>
<s>
solver	B-Application
interface	O
is	O
supported	O
with	O
AMPL	B-Language
's	O
nl	B-Application
(	O
format	O
)	O
.	O
</s>
<s>
The	O
following	O
software	O
packages	O
integrate	O
Pyomo	B-Application
as	O
a	O
library	O
to	O
support	O
optimization	O
modeling	O
and	O
analysis	O
:	O
</s>
<s>
SolverStudio	B-Operating_System
lets	O
you	O
use	O
Excel	O
to	O
edit	O
,	O
save	O
and	O
solve	O
optimisation	O
models	O
built	O
using	O
a	O
variety	O
of	O
modeling	O
languages	O
,	O
including	O
Pyomo	B-Application
.	O
</s>
<s>
Pyomo	B-Application
is	O
bundled	O
with	O
the	O
software	O
.	O
</s>
<s>
This	O
model	O
is	O
formulated	O
and	O
optimized	O
using	O
Pyomo	B-Application
.	O
</s>
<s>
MinPower	O
uses	O
Pyomo	B-Application
to	O
formulate	O
and	O
optimize	O
these	O
power	O
system	O
models	O
.	O
</s>
<s>
,	O
offering	O
similar	O
functionality	O
to	O
Pyomo	B-Application
.	O
</s>
