Professional IronPython

TABlE A-1 
(continued)
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Missing CPython Libraries
 
❘
 
425
lIBrAry NAmE 
PurPoSE
stringprep.py 
Provides methods for preparing Unicode strings for Internet use according to the 
requirements of RFC 3454 (
http://www.faqs.org/rfcs/rfc3454.html
). You 
can find out more about this module at 
http://docs.python.org/library/
stringprep.html
.
subprocess.py 
and 
subprocess
.pyc
Allows a Python application to spawn subprocesses and then interact with 
them through their input, output, and error pipes. The host application also 
receives the subprocess’s return code. This module replaces several older 
modules including 
os.system
, 
os.spawn*
, 
os.popen*
, 
popen2.*
, and 
commands.*
. You can read more about this module at 
http://docs.python
.org/library/subprocess.html
.
symtable.py 
The 
ast
module generates symbol tables right before Python generates byte 
codes. This module provides access to the symbol tables so that you can examine 
them in detail. You can read more about this module at 
http://docs.python
.org/library/symtable.html
.
tty.py 
This module provides terminal mode support. In order to use this module, the appli-
cation must have access to the 
termios
module. This module currently works reli-
ably only on Linux systems, even if you use a CPython implementation on Windows, 
so it isn’t surprising that IronPython doesn’t implement this module yet. You can read 
more about this module at 
http://docs.python.org/library/tty.html
.
webbrowser
.py and 
webbrowser
.pyc
This module provides Web browser controller support for applications. In most 
cases, all you need to do is perform a little configuration and then open the file for 
viewing. The behavior of this module varies on different platforms so you need to 
exercise some care when using it. This module doesn’t directly support Internet 
Explorer, but does support the other major browsers. It does indirectly support 
Internet Explorer through the 
WindowsDefault
option. You can read more about 
this module at 
http://docs.python.org/library/webbrowser.html
.
CPython includes a number of compiled (
.pyc
) modules that don’t appear in IronPython. Even 
though these are technically missing modules, the fact that you have a source code original makes 
it possible to access the functionality these modules provide. Table A-2 provides a list of the missing 
compiled modules.
TABlE A-2: 
Missing Compiled Modules
__future__.pyc 
_abcoll.pyc 
abc.pyc 
BaseHTTPServer.pyc
bdb.pyc 
bisect.pyc 
code.pyc 
codecs.pyc
codeop.pyc 
collections.pyc 
ConfigParser.pyc 
copy.pyc
continues
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