Newbie: Check first two non-whitespace characters

[Karim]

On 31/12/2015 19:54, Karim wrote:
>
>
> On 31/12/2015 19:18, otaksoftspamtrap at gmail.com wrote:
>> I need to check a string over which I have no control for the first 2 
>> non-white space characters (which should be '[{').
>>
>> The string would ideally be: '[{...' but could also be something like
>> '  [  {  ....'.
>>
>> Best to use re and how? Something else?
>
> Use pyparsing it is straight forward:
>
> >>> from pyparsing import Suppress, restOfLine
>
> >>> mystring = Suppress('[') + Suppress('{') + restOfLine
>
> >>> result = mystring.parse(' [ { .... I am learning pyparsing' )
>
> >>> print result.asList()
>
> ['.... I am learning pyparsing']
>
> You'll get your string inside the list.
>
> Hope this help see pyparsing doc for in depth study.
>
> Karim

Sorry the method to parse a string is parseString not parse, please 
replace by this line:

 >>> result = mystring.parseString(' [ { .... I am learning pyparsing' )

Regards