<s>
PyEphem	B-Application
is	O
a	O
library	O
that	O
implements	O
astronomical	O
algorithms	O
for	O
the	O
Python	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
It	O
is	O
free	O
under	O
the	O
LGPL	B-Application
.	O
</s>
<s>
The	O
library	O
is	O
written	O
in	O
Python	B-Language
and	O
C	O
,	O
with	O
code	O
for	O
calculating	O
positions	O
of	O
bodies	O
taken	O
from	O
XEphem	B-Application
by	O
permission	O
.	O
</s>
