叶问题：“未命名模块”叶面图“；”folium“不是包”

Question

几天前Folium工作得很好，但现在不行了。问题是：

import folium

    ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-10-173c1173bf1c> in <module>
----> 1 import folium

~\folium.py in <module>
     13 from branca.element import CssLink, Element, Figure, JavascriptLink, MacroElement
     14 
---> 15 from folium.map import FitBounds
     16 from folium.raster_layers import TileLayer
     17 from folium.utilities import _parse_size, _tmp_html, _validate_location

ModuleNotFoundError: No module named 'folium.map'; 'folium' is not a package

即使是由pip和conda安装也无关紧要。嘿，帮帮我！你知道吗