即使在打印时安装了模块rasterion.io，也找不到它

Question

我正试着用这个[tutorial][1]来绘制geopandas。但是，每当我运行此命令时：我会发现以下错误：

Traceback (most recent call last):
  File "/home/mahin/PycharmProjects/ProfessorEick-20191013T041703Z-001/ProfessorEick/KernelDensity2D/GeoPandasPlot.py", line 2, in <module>
    import geoplot
  File "/home/mahin/miniconda3/lib/python3.7/site-packages/geoplot/__init__.py", line 1, in <module>
    from .geoplot import (
  File "/home/mahin/miniconda3/lib/python3.7/site-packages/geoplot/geoplot.py", line 17, in <module>
    import contextily as ctx
  File "/home/mahin/miniconda3/lib/python3.7/site-packages/contextily/__init__.py", line 7, in <module>
    from .place import Place, plot_map
  File "/home/mahin/miniconda3/lib/python3.7/site-packages/contextily/place.py", line 6, in <module>
    from .tile import howmany, bounds2raster, bounds2img, _sm2ll, _calculate_zoom
  File "/home/mahin/miniconda3/lib/python3.7/site-packages/contextily/tile.py", line 20, in <module>
    from rasterio.io import MemoryFile
ModuleNotFoundError: No module named 'rasterio.io'

我试过使用conda从下面的link安装rasterio，也试过使用下面的instructions。然而，这个问题仍然存在。有人知道原因吗？我的操作系统是ubuntu18.06，我使用pyccharm运行代码，python版本是3.7