'|Length| value specifying the space between the left margin and the
left side of the paragraph. |None| indicates the left indent value is
inherited from the style hierarchy. Use an |Inches| value object as
a convenient way to apply indentation in units of inches.'

@property
def left_indent(self):

    pPr = self._element.pPr
    if (pPr is None):
        return None
    return pPr.ind_left
