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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def tostr(object, encoding=None):
 """ get a unicode safe string representation of an object """

    if isinstance(object, basestring):
        if encoding is None:
            return object
        else:
            return object.encode(encoding)
    if isinstance(object, tuple):
        s = ['(']
        for item in object:
            if isinstance(item, basestring):
                s.append(item)
            else:
                s.append(tostr(item))
            s.append(', ')
        s.append(')')
        return ''.join(s)
    if isinstance(object, list):
        s = ['[']
        for item in object:
            if isinstance(item, basestring):
                s.append(item)
            else:
                s.append(tostr(item))
            s.append(', ')
        s.append(']')
        return ''.join(s)
    if isinstance(object, dict):
        s = ['{']
        for item in object.items():
            if isinstance(item[0], basestring):
                s.append(item[0])
            else:
                s.append(tostr(item[0]))
            s.append(' = ')
            if isinstance(item[1], basestring):
                s.append(item[1])
            else:
                s.append(tostr(item[1]))
            s.append(', ')
        s.append('}')
        return ''.join(s)
    try:
        return unicode(object)
    except:
        return str(object)