How to determine if a line of python code is a continuation of the line above it

[Hans Georg Krauthaeuser]

Sandra-24 wrote:
> I'm not sure how complex this is, I've been brainstorming a little, and
> I've come up with:
> 
> If the previous line ended with a comma or a \ (before an optional
> comment)
> 
> That's easy to cover with a regex
> 
> But that doesn't cover everything, because this is legal:
> 
> l = [
>      1,
>      2,
>      3
>      ]
> 
> and with dictionaries and tuples as well.
> 
> Not sure how I would check for that programmatically yet.
> 
> Is there any others I'm missing?
> 
> Thanks,
> -Sandra
> 
Sandra,

in a similar situation I used 'inspect' and 'compile' like so:


import inspect

def func(*arg, **kwarg):
    return get_cmd()

def get_cmd():
    frame = inspect.currentframe()
    outerframes = inspect.getouterframes(frame)
    caller = outerframes[1][0]
    ccframe = outerframes[2][0]
    ccfname = outerframes[2][1]
    ccmodule = inspect.getmodule(ccframe)
    slines, start = inspect.getsourcelines(ccmodule)
    clen = len(slines)
    finfo = inspect.getframeinfo(ccframe, clen)
    theindex = finfo[4]
    lines = finfo[3]
    theline = lines[theindex]
    cmd = theline
    for i in range(theindex-1, 0, -1):
        line = lines[i]
        try:
            compile (cmd.lstrip(), '<string>', 'exec')
        except SyntaxError:
            cmd = line + cmd
        else:
            break
    return cmd

if __name__ == '__main__':
    a=0
    b="test"
    c=42

    cmd=func(a)
    print cmd
    cmd=func(a,
    b,
    c)
    print cmd



output:
    cmd=func(a)

    cmd=func(a,
    b,
    c)

Regards
Hans Georg