📄 appendixc.htm
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<font face="Times New Roman, Times, Serif" color="#ff0000" size="2">Page
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<td><font face="Times New Roman, Times, Serif" size="3"><b>Reserved
Identifiers</b></font></td>
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<td><font face="Times New Roman, Times, Serif" size="3">Certain classes
of identifiers (variable or function names) have special meanings. These
are</font></td>
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<td><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
<b>_<br>
</b></font><font face="Times New Roman, Times, Serif" size="3">This
variable is used in the interactive interpreter mode <i>only.</i> When
it exists, it stores the result of the last evaluation; the variable
lives in the </font>
<font face="Courier New, Courier, Mono New, Courier, Mono" size="3">__builtin__</font><font face="Times New Roman, Times, Serif" size="3">
module. If it does not exist, it has no special meaning and is not
defined. Leave this one to Python.</font></td>
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<td><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
<b>_*<br>
</b></font><font face="Times New Roman, Times, Serif" size="3">Any
variable beginning with an underscore is not imported by </font>
<font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
from module import *</font><font face="Times New Roman, Times, Serif" size="3">.
It's OK to create your own variables that begin with one underscore, but
you should, by convention, use it only in the module where you created
it.</font></td>
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<td><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
<b>__*__<br>
</b></font><font face="Times New Roman, Times, Serif" size="3">Any name
beginning and ending with two underscores is defined by Python: includes
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<font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
__main__</font><font face="Times New Roman, Times, Serif" size="3">,
</font>
<font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
__import__</font><font face="Times New Roman, Times, Serif" size="3">,
</font>
<font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
__add__</font><font face="Times New Roman, Times, Serif" size="3">, and
so on. You can implement some of the functions yourself (see Appendix
D), but never create variables with a name like this.</font></td>
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<td><font face="Courier New, Courier, Mono New, Courier, Mono" size="3">
<b>__*<br>
</b></font><font face="Times New Roman, Times, Serif" size="3">Used in
class-private name mangling; you won't really need this because it's a
fairly advanced concept, but you can find out more about it at </font>
<font face="Times New Roman, Times, Serif" color="#0000ff" size="3">
<a href="http://www.python.org/" target="_BLANK"><u>
http://www.python.org/</u></a></font><font face="Times New Roman, Times, Serif" size="3">.</font></td>
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<td><font face="Times New Roman, Times, Serif" size="3"><b>Built-in
Names</b></font></td>
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<td><font face="Times New Roman, Times, Serif" size="3">The </font>
<font face="Courier New, Courier, Mono New, Courier, Mono" size="3">__builtin__</font><font face="Times New Roman, Times, Serif" size="3">
module contains a minimum set of function names that you should never
try to use, either as function names or variable names. You <i>can</i>
redefine them, but you won't like the results. Redefining these names
falls under the category of ''things that ought not to be done." The
following is the full list. Find out more at the usual place, </font>
<font face="Times New Roman, Times, Serif" color="#0000ff" size="3">
<a href="http://www.python.org/" target="_BLANK"><u>
http://www.python.org/</u></a></font><font face="Times New Roman, Times, Serif" size="3">.</font><font face="Times New Roman, Times, Serif" color="#ffff00" size="3"><!-- break --></font></td>
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<td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">
<b>__import__()<br>
abs()<br>
apply()<br>
buffer()<br>
callable()<br>
chr()</b></font></td>
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<font face="Times New Roman, Times, Serif" color="#ff0000" size="2">Page
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<td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">
<b>cmp()<br>
coerce()<br>
compile()<br>
complex()<br>
delattr()<br>
dir()<br>
divmod()<br>
eval()<br>
execfile()<br>
filter()<br>
float()<br>
getattr()<br>
globals()<br>
hasattr()<br>
hash()<br>
hex()<br>
id()<br>
input()<br>
intern()<br>
int()<br>
isinstance()<br>
issubclass()<br>
len()<br>
list()<br>
locals()<br>
long()<br>
map()<br>
max()<br>
min()<br>
oct()<br>
open()<br>
ord()</b></font></td>
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<td><font face="Courier New, Courier, Mono New, Courier, Mono" size="2">
<b>pow()<br>
range()<br>
raw_input()<br>
reduce()<br>
reload()<br>
repr()<br>
round()<br>
setattr()<br>
slice()<br>
str()<br>
tuple()<br>
type()<br>
vars()<br>
xrange()</b></font></td>
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