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Spread a statement over various lines


Am 18.09.2019 um 22:22 schrieb Chris Angelico:
> On Thu, Sep 19, 2019 at 6:20 AM Ralf M. <Ralf_M at t-online.de> wrote:
>>
>> Am 17.09.2019 um 20:59 schrieb Manfred Lotz:
>>> I have a function like follows
>>>
>>> def regex_from_filepat(fpat):
>>>       rfpat = fpat.replace('.', '\\.') \
>>>                         .replace('%', '.')  \
>>>                         .replace('*', '.*')
>>>
>>>       return '^' + rfpat + '$'
>>>
>>>
>>> As I don't want to have the replace() functions in one line my
>>> question is if it is ok to spread the statement over various lines as
>>> shown above, or if there is a better way?
>>>
>>> Thanks.
>>>
>>
>> Not related to your question, but:
>> You seem to try to convert a Windows wildcard pattern to a regex
>> pattern. However, wildcards sometimes behave a bit different than what
>> you assume. I know for instance that *.* matches any filename, even if
>> the filename doesn't contain a dot.
> 
> Hmm, why do you assume it's a Windows wildcard pattern specifically?
> 
> ChrisA
> 
I think I jumped to that conclusion because the example didn't treat [ ] 
as special characters. [ ] are special in a unix shell, but not at a cmd 
prompt. Thinking it over, [ ] would need a much differnt treatment and 
might be left out of the example for that reason, though.

Also I may be biased: I mostly use Windows, Linux only occasionally.

Ralf M.