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abs function (built-in) 
abs method (operator module) 
__abs__ special method 
absdate attribute (DateTime class) 
absdays attribute (DateTime class) 
abspath function (os.path module) 
abstime attribute (DateTime class) 
AbstractFormatter class (formatter module) 
AbstractWriter class (formatter module) 
absvalues method
    DateTime class 
    DateTimeDelta class 
accept method (socket object) 
Access database 
access function (os module) 
accumulate attribute (ufunc object) 
acos function
    cmath module 
    math module 
acosh function
    cmath module 
    math module 
acquire method
    Condition class 
    lock object 
    Semaphore object 
Active Server Pages (ASP) 
ActivePython 
ActiveScripting extension 
ActiveState
    Python Cookbook 
    Python IDEs offered by 
actual method (Font object) 
add method
    Menu object 
    operator module 
    Stats object 
__add__ special method  2nd 
add_cascade method (Menu object) 
add_checkbutton method (Menu object) 
add_command method (Menu object) 
add_data method (Request object) 
add_header method
    Message object 
    Request object 
add_password method (HTTPPasswordMgrWithDefaultRealm object) 
add_payload method (Message object) 
add_radiobutton method (Menu object) 
add_separator method (Menu object) 
addstr method (Window object) 
after method (Widget object) 
after_cancel method (Widget object) 
after_idle method (Widget object) 
alias command (pdb module) 
allclose function (Numeric module) 
Alternative Readline for Windows 
Amiga, installing Python 
ampersand (&), bitwise AND 
anchor_bgn method (HTMLParser object) 
anchor_end method (HTMLParser object) 
anchorlist attribute (HTMLParser object) 
__and__ special method 
and_ method (operator module) 
angle brackets (<>)
    event names 
    HTML comments 
anydbm module 
anygui toolkit 
Apache servers
    FastCGI for 
    installing Python CGI scripts 
    PyApache/mod_python for 
    Webware/mod_webkit for 
append method (list object) 
appendChild method (Node object) 
Apple Macintosh  [See Macintosh]
applets, Jython  2nd 
apply function (built-in) 
April attribute (mx.DateTime module) 
arange function (Numeric module) 
Archaeopterix, Python IDE offered by 
archive files, packages distributed as 
argmax function (Numeric module) 
argmin function (Numeric module) 
args attribute (exception object) 
args command (pdb module) 
argsort function (Numeric module) 
arguments 
    calling functions 
argv attribute (sys module) 
arithmetic progression
    retrieving list of integers in 
    returning sequence with items in 
ArithmeticError exception 
ARPA module 
array function
    array module 
    jarray module 
    Numeric module 
array module 
    array function 
    Numeric module and 
    type codes for 
array object (Numeric module) 
    astype method 
    broadcasting 
    byteswap method 
    byteswapped method 
    comparing 
    copy method 
    flat method 
    fromfile method 
    fromlist method 
    fromstring method 
    imag method 
    imaginary method 
    indexing 
    iscontiguous method 
    itemsize method 
    masked 
    operations on 
    real method 
    savespace method 
    shape attribute 
    shape method 
    slicing 
    spacesaver method 
    storing 
    tofile method 
    tolist method  2nd 
    tostring method  2nd 
    type codes 
    typecode method 
array type (array module) 
array2string function (Numeric module) 
arrayrange function (Numeric module) 
arrays 
article method (NNTP object) 
as_string method (Message object) 
ASCII/ISO integer code 
ascii_letters attribute (string module) 
ascii_lowercase attribute (string module) 
ascii_uppercase attribute (string module) 
asctime function (time module) 
asin function
    cmath module 
    math module 
asinh function
    cmath module 
    math module 
ASP (Active Server Pages) 
assert statement 
assert_ method (TestCase object) 
assertEqual method (TestCase object) 
AssertionError class (built-in)
    assert statement 
AssertionError exception 
assertNotEqual method (TestCase object) 
assertRaises method (TestCase object) 
assignment statements  2nd  3rd 
    to array slices 
    augmented 
    plain 
asterisk (*) 
    double asterisk (**)
        raising to a power 
    from statement 
    multiplication 
    regular expressions 
    string formatting 
asterisk-question mark (*?), regular expressions 
astype method (array object) 
async_chat class (asynchat module) 
    collect_incoming_data method 
    found_terminator method 
    push method 
    set_terminator method 
asynchat module 
    performance characteristics 
asynchronous programming  [See sockets, event-driven programs]
asyncore module 
    dispatcher class 
    loop function 
    performance characteristics 
at sign (@), struct format strings 
atan/atan2 functions
    cmath module 
    math module 
atanh function
    cmath module 
    math module 
atexit module 
    register function 
atof function (locale module) 
atoi function (locale module) 
Attr class (minidom module) 
    ownerElement attribute 
    specified attribute 
AttributeError exception  2nd 
    array object 
AttributeList class (minidom module) 
attributes  2nd 
    binding 
        class attributes 
        instance attributes 
    of class objects 
    DBAPI-compliant modules 
    deleting 
        ÒdeletingÓ class attributes 
    documentation strings 
    of file object 
    of module object 
    overriding 
    path-string (os module) 
    references  2nd 
    Tkinter module 
    ufunc object 
    unbinding
        class attributes 
        instance attributes 
attributes attribute (Node object) 
Attributes object (xml.sax package)
    getNameByQName method 
    getQNameByName method 
    getQNames method 
    getValueByQName method 
augmented assignment statements 
August attribute (mx.DateTime module) 
authentication
    SMTP servers 
    URL access to network protocols 
author argument (distutils setup function) 
author_email argument (distutils setup function) 
average function (Numeric module)