1.4
Executing
Scripts
iPython
may
be
started
in
different
ways,
depending
on
your
operating
system.
•
on
Linux
by
running
ipython
--pylab
in
a
shell
•
on
Windows
by
creating
a
shortcut,
for
which
you
choose
the
command
python.exe
-c
"import
sys;
from
IPython.ipapi
import
launch_new_instance;
sys.exit(launch_new_instance())"
•
on
Mac
OS
X
by
running
ipython
--pylab
in
Terminal
Executing
Scripts
You
often
want
to
execute
the
contents
of
a
file.
•
Use
the
command
cd
in
IPython
in
order
to
move
to
the
directory
where
your
file
is
located
•
To
execute
the
contents
of
a
file
named
f
ile.
py
just
run
the
command
execfile('file.py')
in
the
IPython
shell.
Getting
Help
Here
are
some
tips
on
how
to
use
IPython:
•
To
get
help
on
an
object
just
type
?
after
the
object's
name
and
then
return
•
Use
the
arrow
keys
to
reuse
the
last
executed
commands
•
You
may
use
the
tab
key
for
completion
(i.e.,
you
write
the
first
letter
of
a
variable
or
method,
and
IPython
shows
you
a
menu
with
all
the
possible
completions)
•
Use
Ctrl+D
to
quit
•
Use
iPython's
magic
functions.
You
find
a
list
and
explanations
by
applying
the
func-
tion
%itiagic
at
command
prompt.
You
can
find
out
more
about
IPython
from
the
online
documentation
[14].
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