Python Cookbook
| [SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] u'<?xml' (XML declaration) UDP (User Datagram Protocol) passing messages with reliability of using to detect inactive computers on a network uiToolkit unbounded iterators, wrapping to restrict output undefined variables, testing for underscore (_) unichr Unicode characters, printing to standard output plain strings, converting to Unicode strings 2nd 3rd XML, autodetecting encoding in XML, default encoding in unique Unix algorithms, measuring efficiency commands, capturing output and error streams from crossplatform debugging and debugging dynamically loaded C extensions measuring disk usage for network interface, checking status UNIX Network Programming, Volume 1\: Networking APIs - Sockets and XTI, Second Edition unpack (Perl) contrasted with struct.unpack (Python) unpacking update upper (string object method) uppercase, conversion to lowercase upperOpen urllib urllib and urllib2 modules urlopen user feedback during data entry, giving via Qt user interfaces avoiding lambda in writing callback functions building GTK GUIs interactively building toolkit-independent GUIs CLIs creating color scales creating dialog boxes with Tkinter creating menus with Tkinter embedding GIFs inline using Tkinter giving the user feedback during data entry with Qt GUIs Publish/Subscribe broadcasting to loosen coupling between GUIs and business logic systems supporting multiple values per row in a Tkinter listbox Tkinter wxPython Notebook with panels using list comprehensions instead of map and filter UTF-16 encoding UTF-8 2nd |