ANN: New Book: Programming in Python 3

[Thomas Heller]

Steve Holden schrieb:
> Thomas Heller wrote:
>> Question from a non-native english speaker: is this now valid english?
>> 
>>   "One of Python’s great strengths"
>>                 ^
>>   "and also teaches Python’s functional programming features"
>>                           ^
>>   "The book’s approach is wholly practical"
>>            ^
> It always has been valid English. The apostrophe is only omitted from
> personal pronouns (hers, its, and so on).

I see, thanks.  But, is the apostrophe optional in the above fragments?

Thomas