Errata for Learning Python

"Learning Python is designed to be naturally complimented by..." NOW READS: "Learning Python is designed to be naturally complemented by..."

"New testing and documentation tools such as PyDoc, PyUnit, and doctest (Chapter 11)" NOW READS: "New testing and documentation tools such as PyDoc, PyUnit, and doctest (Chapter 26)"

"Although this may be an intangible benefit, it's effect on productivity at large is an important asset." "It's" NOW READS "its."

"On the web, you'll also find a third-party system called gadfly that implements a SQL database for Python programs, a complete object-oriented database system called ZODB." NOW READS: "On the web, you'll also find a third-party system called gadfly that implements a SQL database for Python programs, and a complete object-oriented database system called ZODB."

"Be-OS". NOW READS "BeOS". "PocketPC and CE" NOW READS: "PocketPC and Windows CE"

"... Python code will be much less to write, debug, and maintain." NOW READS: "... Python code will be much less difficult to write, debug, and maintain."

"Python.net" NOW READS "Python.NET" (as on page 22).

"...type three Python statements into a text file named spam.py". NOW READS: "...type two Python statements into a text file named spam.py".

"Finally, remember to give the full path to your script file if it lives a different directory ...." NOW READS: "Finally, remember to give the full path to your script file if it lives in a different directory ...."

.. attribute title in other components two different ways. NOW READS: .. attribute title in other components in two different ways.

www.python.og NOW READS www.python.org

On line 5, "write one of the following to force Python evaluate" NOW READS: "write one of the following to force Python to evaluate" On line 10, "In the second cases" NOW READS "In the second case"

"that's why the result are displayed ..." NOW READS: "that's why the result is displayed ..."

"In general, any code that depends on / truncating an integer result may be effected..." NOW READS: "In general, any code that depends on / truncating an integer result may be affected..."

"This is covered in Chapter 4." NOW READS: "This is covered in Chapter 5."

"...Python also reclaims the old object, if it is not reference by any other name (or object)." NOW READS: "...Python also reclaims the old object, if it is not referenced by any other name (or object)."

"Unicode is normlly used to ..." NOW READS: "Unicode is normally used to ..."

"hexidecimal" NOW READS: "hexadecimal"

Repitition NOW READS Repetition.

"The first line defines a four-character string and assign it the name S." NOW READS: "The first line defines a four-character string and assigns it the name S."

"When you index a sequence object such as a string on a pair of offsets seperated by a colon..." NOW READS: "When you index a sequence object such as a string on a pair of offsets separated by a colon..."

"... you can use any of conversion codes ...." NOW READS: "... you can use any of the conversion codes ...."

%X X, but prints uppercase NOW READS: %X x, but prints uppercase

"See also the section "Numbers" in Chapter 4 for examples that convert to hexidecimal and octal strings with the %x and %o formatting target codes." NOW READS: "See also the section "Numbers" in Chapter 4 for examples that convert to hexadecimal and octal strings with the %x and %o formatting target codes."

'basic text extraction cores.' NOW READS: 'basic text extraction chores.'

""" Index, slice, length """ NOW READS: """ Index, index of index, slice, length """

For instance, the second row in Table 6-1 assigns variable L1 to a four-item list. NOW READS: For instance, the second row in Table 6-1 assigns variable L2 to a four-item list. page 105, Table 6-2, d3['food']['ham'] NOW READS: D3['food']['ham'] AND len(d1) NOW READS: len(D1) AND del d2[key] NOW READS: del D2[key]

>>> 'ham' in d3 NOW READS: >>> 'ham' in d2

"blindly overwiting values" NOW READS: "blindly overwriting values"

empty except for the two positions, (2,3,4) and (7,8,8). -> empty except for the two positions, (2,3,4) and (7,8,9). ########################################

""" Index, slice, length """ NOW READS: """ Index, index of index, slice, length """

"Many programmers also find that parenthesis tend to aid script readability." NOW READS: "Many programmers also find that parentheses tend to aid script readability."

Emded copies of X's object. Should be: Embed copies of X's object. ########################################

"exmaple" NOW READS: "example".

In the list of Python reserved words, the keyword 'Is' NOW READS 'is' and the keyword 'lamda' NOW READS 'lambda'

"In the Jython Java-based implementation or Python, ..." NOW READS: "In the Jython Java-based implementation of Python, ..."

sys.sytdout -> sys.stdout ########################################

"true of false" NOW READS: "true or false"

"here are a few of simple...." NOW READS: "here are a few simple.

"... returns a list a ...." NOW READS: "... returns a list of ..."

Reference to "Chapter 11" NOW READS "Chapter 14"

"ommitted" NOW READS: "omitted"

atributes -> attributes ########################################

...known as a docsting, into the __doc__ attribute... NOW READS: ...known as a docstring, into the __doc__ attribute...

"ommitted" NOW READS: "omitted"

"It turns out that built modules ...." NOW READS: "It turns out that built-in modules ..."

"ommitted" NOW READS: "omitted"

relevent NOW READS: relevant

categoy NOW READS: category

"in most cases, it is no longer necesary..." NOW READS: "in most cases, it is no longer necessary..."

'passsed' NOW READS 'passed'

"HTLM" NOW READS "HTML"

"Clients that used from to fetch attributes in the past won't be effected by a reload;" NOW READS: "Clients that used from to fetch attributes in the past won't be affected by a reload;"

"Package imports can also greatly simply" NOW READS: "Package imports can also greatly simplify"

irrelevent NOW READS: irrelevant

funtions NOW READS: functions

"functionalty" NOW READS "functionality"

... that code runs and is disgarded immediately... NOW READS: ... that code runs and is discarded immediately...

'rather than changing exiting code in-place' NOW READS: 'rather than changing existing code in-place'

'it doesn't effect' NOW READS: 'it doesn't affect'

"reprresentation" NOW READS: "representation"

"fully expended name" NOW READS: "fully expanded name"

"this change only effects" NOW READS: "this change only affects"

In the second sentence, "toipic" NOW READS "topic" and "libray" NOW READS "library"

-name- -> __name__ ########################################

some advance IDEs -> some advanced IDEs ########################################

-name- -> __name__ ########################################

...20% faster them 2.2 should be ...20% faster than 2.2 ########################################

yeteminently -> yet emininently ########################################

def safeint(candidate): converted = float(candidate) rounded = round(converted) if converted == rounded: return int(converted) else: raise ValueError, "%s would lose precision when cast" % candidate -> def safeint(candidate): converted = float(candidate) truncated = int(converted) if converted == truncated: return truncated else: raise ValueError, "%s would lose precision when cast" % candidate ########################################

see Chapter 7 -> see Chapter 23 ########################################

directory tree rotted -> directory tree rooted ########################################

The title of the webpage in Figure 28-1 reads "Comments and Complaints Form - Joe's Toothpase, Inc. - Netscape" There should be a 't' in "Toothpase".

Under arguments: Please add "arbitrary" and/or "extended calling" with page 212 One term is used by the book while the other is found in FAQs.

% (remainder/format) operator, 58 -> % (remainder/format) operator, 58, 87-90 ########################################

Under calling: add "arbitrary arguments" and/or "extended calling" with page 212

Under iteration: The group "iteration" doesn't include pages about iterators. Perhaps pages 233 and 236 should be added.

"PIL (Python Imaging Library), 485" The page number is way off. It should be 523.

The 'yield' statement should be in the index. Also, remove 'you' from the index!