environment/lib/python2.7/site-packages/IPython/utils/text.py
def fields(self, *fields):
        """ Collect whitespace-separated fields from string list

        Allows quick awk-like usage of string lists.

        Example data (in var a, created by 'a = !ls -l')::
            -rwxrwxrwx  1 ville None      18 Dec 14  2006 ChangeLog
            drwxrwxrwx+ 6 ville None       0 Oct 24 18:05 IPython

        a.fields(0) is ['-rwxrwxrwx', 'drwxrwxrwx+']
        a.fields(1,0) is ['1 -rwxrwxrwx', '6 drwxrwxrwx+']
        (note the joining by space).
        a.fields(-1) is ['ChangeLog', 'IPython']

        IndexErrors are ignored.

        Without args, fields() just split()'s the strings.
        """
        if len(fields) == 0:
            return [el.split() for el in self]

        res = SList()
        for el in [f.split() for f in self]:
            lineparts = []

            for fd in fields:
                try:
                    lineparts.append(el[fd])
                except IndexError:
                    pass
            if lineparts:
                res.append(" ".join(lineparts))

        return res
def fields(self, *fields):
        if len(fields) == 0:
            return [el.split() for el in self]

        res = SList()
        for el in [f.split() for f in self]:
            lineparts = []

            for fd in fields:
                try:
                    lineparts.append(el[fd])
                except IndexError:
                    pass
            if lineparts:
                res.append(" ".join(lineparts))

        return res
def fields ( self , * fields ) : if len ( fields ) == 0 : return [ el . split ( ) for el in self ] res = SList ( ) for el in [ f . split ( ) for f in self ] : lineparts = [ ] for fd in fields : try : lineparts . append ( el [ fd ] ) except IndexError : pass if lineparts : res . append ( " " . join ( lineparts ) ) return res
Collect whitespace-separated fields from string list

        Allows quick awk-like usage of string lists.

        Example data (in var a, created by 'a = !ls -l')::
            -rwxrwxrwx  1 ville None      18 Dec 14  2006 ChangeLog
            drwxrwxrwx+ 6 ville None       0 Oct 24 18:05 IPython

        a.fields(0) is ['-rwxrwxrwx', 'drwxrwxrwx+']
        a.fields(1,0) is ['1 -rwxrwxrwx', '6 drwxrwxrwx+']
        (note the joining by space).
        a.fields(-1) is ['ChangeLog', 'IPython']

        IndexErrors are ignored.

        Without args, fields() just split()'s the strings.
Collect whitespace - separated fields from string list