Oscon2009 Python On Symbian

Python
for
S60
 Easy,
rapid
prototyping
of
mobile
 applica:ons
on
the
S60
pla;orm
 Herb
Jellinek,
Supported
So@ware
LLC
 jellinek
at
newscenter
dot
com


July
2009


Copyright
©
2009,
Herb
Jellinek


1


Python?
 •  General‐purpose
object‐oriented
 programming
language
 •  Allows
edit‐compile‐test
as
well
as
completely
 interac:ve
execu:on
 •  Language,
libraries,
and
paOerns
of
use
 encourage
readability
and
produc:vity
 •  Open
source
project
with
a
large
user
 community
 July
2009


Copyright
©
2009,
Herb
Jellinek


2


What
is
Python
for
S60?
 •  Nokia’s
port
of
the
Python
run:me
to
the
S60
 smartphone
pla;orm
 •  Python
core
language
 •  Rich
set
of
capabili:es
 –  Large
set
of
standard
Python
libraries,
plus
 –  Mobile‐specific
API


•  AKA
PyS60


July
2009


Copyright
©
2009,
Herb
Jellinek


3


Why
PyS60?
 •  Easy
to
get
started
 •  Can
test
applica:on
ideas
and
pla;orm
features
 •  Provides
access
to
many
pla;orm
features
out
of
the
box
 –  Network,
file
system,
messaging,
contacts
database
 –  Bluetooth,
camera,
loca:on/GPS,
sensor
framework
 –  Etc.


•  •  •  •  •  •  •  • 

More
func:onality
than
Java
and
Flash
Lite
run:mes
(no
“sandbox”)
 Can
extend
with
na:ve
modules
for
addi:onal
capabili:es
 Quick
edit/test/edit
cycle
on
real
device
or
emulator
 Interac:ve
Bluetooth
console
 Runs
on
a
large
number
of
devices
 Open
source
project
with
ac:ve
developer
community
 Tools
are
free
and
run
on
most
major
OSes

 Great
for
demonstra:ng
product
ideas
to
senior
management!


July
2009


Copyright
©
2009,
Herb
Jellinek


4


Why
not
PyS60?
 •  Not
supported
on
other
mobile
device
 pla;orms
 •  More
overhead,
lower
performance
than
 na:ve
Symbian
C++
 •  Must
install
Python
on
the
phone
manually
–
a
 slightly
cumbersome
process


July
2009


Copyright
©
2009,
Herb
Jellinek


5


Geing
Started
 •  Choose
a
pla;orm
 –  PyS60
1.4.5
(stable
release,
Python
2.2.2
base)
or
 –  PyS60
1.9.6
(beta
release,
Python
2.5.1
base)


•  Choice
depends
on
your
technical
 requirements
and/or
taste
for
adventure


July
2009


Copyright
©
2009,
Herb
Jellinek


6


Geing
Started
 •  (assume
PyS60
1.4.5
and
S60
3rd
Edi:on
FP1
device)
 •  Download
from
hOp://sourceforge.net/projects/pys60/:
 Component


Name


Example


Python
run:me


PythonForS60_1_4_5_xE dFPy.sis


PythonForS60_1_4_5_3rdEd.sis


Python
script
shell
 PythonScriptShell_1_4_5 _xEdFPy.sis


PythonScriptShell_1_4_5_3rdEd. sis


Documenta:on


PythonForS60_1_4_5_do c.pdf


Release
notes


release_notes_1_4_5.txt


July
2009


Copyright
©
2009,
Herb
Jellinek


7


Geing
Started
 •  Transfer
run:me
and
script
shell
to
phone
 –  PythonForS60_1_4_5_3rdEd.sis
 –  PythonScriptShell_1_4_5_3rdEd.sis
 –  When
Installer
asks
to
install,
say
yes!


•  Order
maOers;
install
run:me
first
 •  Create
E:\Python
directory
on
phone
for
 scripts
 •  Can
also
run
on
S60
Emulator
 July
2009


Copyright
©
2009,
Herb
Jellinek


8


Examples
 •  •  •  •  •  • 

Hello,
World
–
Console
 Hello,
World
–
from
script
menu
 Hello,
World
–
appuifw
 Text
Messaging
 Telephony
 GPS


July
2009


Copyright
©
2009,
Herb
Jellinek


9


Hello,
World
 •  Open
Bluetooth
console
and
type
this:
 print u”Hello, world!”

July
2009


Copyright
©
2009,
Herb
Jellinek


10


Hello,
World


July
2009


Copyright
©
2009,
Herb
Jellinek


11


Hello,
World
 •  Create
helloworld.py
and
copy
to
E:\Python:
 print u“Hello, world!”

July
2009


Copyright
©
2009,
Herb
Jellinek


12


Run
Your
Script


July
2009


Copyright
©
2009,
Herb
Jellinek


13


Hello,
World
á
la
PyS60
 •  Use
the
appuifw
module
to
set
the
:tle
and
 pop
up
a
note
 import appuifw appuifw.app.title = u"The Universal Program" appuifw.note(u"Hello, world!")

July
2009


Copyright
©
2009,
Herb
Jellinek


14


Hello,
World
á
la
PyS60


July
2009


Copyright
©
2009,
Herb
Jellinek


15


A
Bit
More
UI
 import appuifw, e32 def quit(): appLock.signal() textObj = appuifw.Text() textObj.font = "title" textObj.set(u”Hello, World!”) appLock = e32.Ao_lock() appuifw.app.exit_key_handler = quit appuifw.app.body = textObj appLock.wait()

July
2009


Copyright
©
2009,
Herb
Jellinek


16


A
Bit
More
UI


July
2009


Copyright
©
2009,
Herb
Jellinek


17


Using
Pla;orm
API’s:
Text
Messaging
 •  inbox
module
accesses
messages
in
device
 inbox


July
2009


>>> import inbox >>> inb = inbox.Inbox() >>> messages = inb.sms_messages() >>> for m in messages: ... print inb.address(m) ... Wessling Susana AT&T email gateway Wessling Susana Wessling Susana AT&T email gateway AT&T email gateway 18314307294 >>> Copyright
©
2009,
Herb
Jellinek


18


Using
Pla;orm
API’s:
Telephony
 import appuifw, telephone, e32, audio appLock=e32.Ao_lock() def quit(): appLock.signal() appuifw.app.exit_key_handler=quit lastNumber=None def callState((state, number)): global lastNumber if (state == telephone.EStatusRinging): lastNumber = number if (state == telephone.EStatusDisconnecting): audio.say(u”Call was from %s” % lastNumber) # register the callback telephone.call_state(callState) appLock.wait() July
2009


Copyright
©
2009,
Herb
Jellinek


19


Using
Pla;orm
API’s:
GPS


Source code and details forthcoming at developer.symbian.org/wiki/index.php?title=Location_Based_Services July
2009


Copyright
©
2009,
Herb
Jellinek


20


Time‐saving
Tips
 •  Add
the
Python
script
shell
and
File
Manager
 to
the
Ac:ve
Standby
Apps
(name
varies)


•  Allows
you
to
run/restart
Python
and
 manipulate
scripts
quickly
 July
2009


Copyright
©
2009,
Herb
Jellinek


21


Time‐saving
Tips
 •  Use
Nokia
PC
Suite
or
Bluetooth
file
browser
 on
dev
computer


July
2009


Copyright
©
2009,
Herb
Jellinek


22


Time‐saving
Tips
 •  Consider
using
a
source
code
control
system
 for
those
“what
was
I
thinking?”
moments


July
2009


Copyright
©
2009,
Herb
Jellinek


23


Conclusion
 •  •  •  •  •  •  • 

Python
for
S60
(PyS60)
 Shallow
learning
curve
 Quick,
easy
experimenta:on
and
development
 Advantages
and
disadvantages
 Comparison
with
other
S60
pla;orms
 Examples
 So
much
more
to
explore
 –  Modules,
libraries,
packaging,
best
prac:ces,
code
 signing,
…


July
2009


Copyright
©
2009,
Herb
Jellinek


24


Thank
You
 •  Ques:ons?


July
2009


Copyright
©
2009,
Herb
Jellinek


25


Contact
 •  Herb
Jellinek,
Supported
So@ware,
LLC
 •  jellinek
at
newscenter
dot
com


July
2009


Copyright
©
2009,
Herb
Jellinek


26