def _join_seq(d, k, v):
    '''Add a sequence value to env dict'''

    if k not in d:
        d[k] = list(v)

    elif isinstance(d[k], list):
        for item in v:
            if item not in d[k]:
                d[k].insert(0, item)

    elif isinstance(d[k], string_types):
        v.append(d[k])
        d[k] = v
def _join_seq(d, k, v):
    '''Add a sequence value to env dict'''

    if k not in d:
        d[k] = list(v)

    elif isinstance(d[k], list):
        for item in v:
            if item not in d[k]:
                d[k].insert(0, item)

    elif isinstance(d[k], string_types):
        v.append(d[k])
        d[k] = v
def _join_seq ( d , k , v ) : if k not in d : d [ k ] = list ( v ) elif isinstance ( d [ k ] , list ) : for item in v : if item not in d [ k ] : d [ k ] . insert ( 0 , item ) elif isinstance ( d [ k ] , string_types ) : v . append ( d [ k ] ) d [ k ] = v
Add a sequence value to env dict
Add a sequence value to env dict