Question

Lesson 5: Floating Point Numbers, Successive Refinement, Finding Roots

Answer 1

On my computer (Windows 7 x64) running Python 3.2.2 some of the output generator by Prof. Guttag did not match my own. For example when raising to the 2 *** 1000 does not print the L in my case. There were other differences.

I'm attaching the handout for this lecture pasted and formatted from the PDF.

Hope this helps.

Answer 2

Just a quick question, which version of Python was used in the lecture?

Answer 3

?

Answer 4

" ...sys.maxint is always set to the maximum plain integer value for the current platform..."
http://docs.python.org/library/stdtypes.html#numeric-types-int-float-long-complex

AMD Athlon II x4 645
Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)] on win32
my maxint is 2147483647 which is 7FFF FFFF ... all but bit 31

Answer 5

and one more makes it 'long' 2147483648L

Answer 6

In 2.7.2 I get the same answer although in 3.2.2 I get the following:

>>> import sys
>>> sys.maxint
Traceback (most recent call last):
File "<pyshell#7>", line 1, in <module>
sys.maxint
AttributeError: 'module' object has no attribute 'maxint'
>>>

Answer 7

i wonder why?