<s>
PySide	B-Language
is	O
a	O
Python	B-Language
binding	B-Application
of	O
the	O
cross-platform	B-Operating_System
GUI	B-Application
toolkit	O
Qt	B-Language
developed	O
by	O
The	O
Qt	B-Language
Company	O
,	O
as	O
part	O
of	O
the	O
Qt	B-Language
for	O
Python	B-Language
project	O
.	O
</s>
<s>
It	O
is	O
one	O
of	O
the	O
alternatives	B-Library
to	O
the	O
standard	O
library	O
package	O
Tkinter	B-Language
.	O
</s>
<s>
Like	O
Qt	B-Language
,	O
PySide	B-Language
is	O
free	B-Application
software	I-Application
.	O
</s>
<s>
PySide	B-Language
supports	O
Linux/X11	B-Application
,	O
macOS	B-Application
,	O
and	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
By	O
2009	O
,	O
Nokia	O
,	O
the	O
then	O
owners	O
of	O
the	O
Qt	B-Language
toolkit	I-Language
,	O
wanted	O
Python	B-Language
binding	B-Application
available	O
under	O
the	O
LGPL	B-Application
license	I-Application
.	O
</s>
<s>
Nokia	O
failed	O
to	O
reach	O
an	O
agreement	O
with	O
Riverbank	O
Computing	O
the	O
developers	O
of	O
PyQt	B-Language
Python	B-Language
binding	B-Application
.	O
</s>
<s>
In	O
August	O
,	O
Nokia	O
released	O
PySide	B-Language
.	O
</s>
<s>
It	O
provided	O
similar	O
functionality	O
,	O
but	O
under	O
the	O
LGPL	B-Application
.	O
</s>
<s>
'	O
Side	O
 '	O
is	O
Finnish	O
for	O
binding	B-Application
.	O
</s>
<s>
There	O
have	O
been	O
three	O
major	O
versions	O
of	O
PySide	B-Language
:	O
</s>
<s>
PySide	B-Language
version	O
1	O
was	O
released	O
in	O
August	O
2009	O
under	O
the	O
LGPL	B-Application
by	O
Nokia	O
,	O
then	O
the	O
owner	O
of	O
the	O
Qt	B-Language
toolkit	I-Language
,	O
after	O
it	O
failed	O
to	O
reach	O
an	O
agreement	O
with	O
PyQt	B-Language
developers	O
Riverbank	O
Computing	O
to	O
change	O
its	O
licensing	O
terms	O
to	O
include	O
LGPL	B-Application
as	O
an	O
alternative	O
license	O
.	O
</s>
<s>
It	O
supported	O
Qt	B-Language
4	O
under	O
the	O
operating	O
systems	O
Linux/X11	B-Application
,	O
Mac	B-Application
OS	I-Application
X	B-Operating_System
,	O
Microsoft	B-Application
Windows	I-Application
,	O
Maemo	B-Operating_System
and	O
MeeGo	B-Operating_System
,	O
while	O
the	O
PySide	B-Language
community	O
added	O
support	O
for	O
Android	B-Application
.	O
</s>
<s>
PySide2	O
was	O
started	O
by	O
Christian	O
Tismer	O
to	O
port	O
PySide	B-Language
from	O
Qt	B-Language
4	O
to	O
Qt	B-Language
5	O
in	O
2015	O
.	O
</s>
<s>
The	O
project	O
was	O
then	O
folded	O
into	O
the	O
Qt	B-Language
Project	O
.	O
</s>
<s>
It	O
added	O
support	O
for	O
Qt	B-Language
6	O
and	O
removed	O
support	O
for	O
all	O
Python	B-Language
versions	O
older	O
than	O
3.6	O
.	O
</s>
<s>
The	O
project	O
started	O
out	O
using	O
Boost.Python	O
from	O
the	O
Boost	O
C++	O
libraries	O
for	O
the	O
bindings	O
.	O
</s>
<s>
It	O
later	O
created	O
its	O
own	O
binding	B-Application
generator	O
named	O
Shiboken	O
,	O
to	O
reduce	O
the	O
size	O
of	O
the	O
binaries	O
and	O
the	O
memory	O
footprint	O
.	O
</s>
