regex - Python Regular Express Lookahead multiple conditions -

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my string looks this:

string = "*[eq](@[type],'a,b,c',@[type],*[eq](@[type],d,e,f))"

the ideal output list is:

['@[type]', 'a,b,c', '@[type]', '*[eq](@[type],d,e,f)']

so can parse string as:

if @[type] in ('a,b,c') @[type] else *[eq](@[type],d,e,f)

the challenge find commas followed @, ' or *. i've tried following code doesn't work:

interm = re.search(r"\*\[eq\]\((.+)(?=,@|,\*|,\')+,(.+)\)", string) print(interm.groups())

edit:

the ultimate goal parse out 4 components of input string:

*[eq](value, target, iftrue, iffalse) 

>>> import re >>> string = "*[eq](@[type],'a,b,c',@[type],*[eq](@[type],d,e,f))" >>> re.split(r"^\*\[eq\]\(|\)$|,(?=[@'*])", string)[1:-1] ['@[type]', "'a,b,c'", '@[type]', '*[eq](@[type],d,e,f)']

although, if looking more robust solution i'd highly recommend lexical analyzer such flex.


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