<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _make_style_str(styledict):
 """ Make an SVG style string from the dictionary. See also _parse_style_str also. """

    s = ''
    for key in list(styledict.keys()):
        s += "%s:%s;" % (key, styledict[key])
    return s