Errata
Page xviii - In Script i.1, change the line "for j in range(len(heads)):" to "for j in range(flips):".
Page 26 - In Figure 2.1, change the fourth line from "s, 1st" to "s, lst".
Page 33 - Change the final tip to "If expr is a string expression, print expr is equivalent to sys.stdout.write(expr + '\n')".
Page 41 - In Table 2.5, change the description of the not operator to "Returns 0 (zero) if x is true, 1 otherwise."
Page 55 - Change the second sentence to "...shows how many times (y) the base, x, is multiplied by itself.
Page 62 - Change the fourth paragraph from the bottom to "Type round(x,n) to round x to n digits...".
Page 69 - Change the second sentence to "A string is an ordered sequence of...".
Page 77 - Delete the extra right-bracket at the end of the encode() function syntax: s.encode(encoding [,errors]).
Page 81 - Delete the first sentence of the second tip.
Page 122 - Change the caption of Figure 5.6 to "...may be indexed with s[i][j][k]... ".
Page 136 - Change the first operation in the left column of Table 5.1 to s[i] = x.
Page 158 - Delete the second gray arrow in the last line of Figure 6.5.
Page 160 - Change the caption of Figure 6.8 to "...if the key doesn't exist...".
Page 161 - Change the first sentence to "...containing all of a dictionary's values."
Page 176 - In Scripts 6.2 and 6.3, change "count = n/2" to "count = int(sqrt(n))".
Page 185 - Change the Python statement in the caption of Script 7.5 from "x=x+1" to "x=x-1".
Page 189 - Change the caption of Figure 7.14 to "The hex digits are 0...9, A...F, and...".
Page 240 - Delete the extra comma in the apply() function syntax: apply(func[,args[,kwargs]]).
Page 245 - The if statement in the first tip is "if (func(i) or (i and (func is None))):"
Page 248 - Change "cond3" to "condN ".
Page 249 - In Figure 8.36, change the style of the statement "print intersection" to be boldface.
Page 266 - In the next-to-last tip, change "from __future__ import true_division" to "from __future__ import division".
Page 275 - Change the parenthetical remark in first sentence to "(...and each function call, for example)".
Page 284 - Change the exec statement syntax to exec "code" [in globals[,locals]].
Page 289 - Change the second sentence to "If the line is shorter than size, the entire line is returned."
Page 322 - Change the syntax quotes in step 2 of "To pickle an object" to straight quotes.
Page 328 - Change the parenthetical remark in last sentence of the SystemExit description to "(the finally clauses of try statements)".
Page 336 - Change the backslashes in Figure 11.10 to double-backslashes (escape sequences): "E:\\temp\\log.tmp".
Page 342 - Change the last paragraph to "try_block and except_block1, except_block2,..., except_blockN are indented blocks...".
Page 357 - In Table 12.3, the __class__ attribute returns the instance's class itself, not the name of the class.
Page 369 - Change the quotes in Figure 12.18 to straight quotes.
Page 406 - Change "PYTYHONPATH" to "PYTHONPATH" (two places).
Page 407 - Change "PYTYHONPATH" to "PYTHONPATH" (one place).