On 1/27/2017 6:12 PM, Ian Kelly wrote:
On Jan 27, 2017 2:13 PM, "bob gailer" <bgai...@gmail.com> wrote:
On 1/26/2017 8:05 PM, Sandeep Nagar wrote:
Hi
As I mentioned, a scaled down version is available for free at
bookmuft.Com which can be used to judge in this case.
Maybe I am blind, but I don't see any mention of bookmuft.Co.
I pulled up the PDF from bookmuft.com (which I also do not see mentioned in
the original post).
2.1 page 15:
"For example, suppose line 5 of a python program has syntax error, in this
case the program will executes all commands till line 4 and will then show
an error."
This is a run-on sentence, which is to say, two sentences. Change
'suntax,' to 'syntax.' and 'in' to ' In'.
This is factually incorrect. A program with a syntax error will not be
executed at all.
The description of the Python interpreter is also pretty far from the
truth. The interpreter does not read Python source code one line at a time
as described. The interpreter only reads Python bytecode. At the point that
the interpreter starts reading bytecode, the Python compiler has already
compiled the entire source file into bytecode.
This description only applies to CPython. Other Python implementations may
work differently.
Page 17:
"When the programs compose of hundreds and thousands of lines, a
compilation process will yield a faster result because the object code
needs to be only compiled once and then run directly on microprocessor.
Whereas an interpreted code will check for interpretations each time it
needs to be processed."
"When programs are composed of ..."
Again, it's only Python byte code that is interpreted. The actual Python
source is compiled and does not need to be reprocessed each time a line of
code is executed.
3.2, page 21:
"logical: This type of data stores boolean values True or False boolean
values and can be operated by boolean operators like AND, OR etc."
The type is named "bool", not "logical".
"Most programming languages use the values 1 or 0 for boolean values but
python differs in this approach."
It's not really important, but I disagree with that assessment of "most
programming languages", at least in regard to modern or high-level ones.
3.3, page 22:
"There are four types of numeric data types" (listing int, long, float and
complex)
In 3.x, 'int' was delected and 'long' was renamed 'int'.
I strongly suggest that the next version be written for 3.x with
2.x-only info either deleted or relegated to footnotes (or parenthetical
notes).
--
Terry Jan Reedy
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