Question

想象一下，我正在操纵Geopandas中的shapefile。然后，我想使用另一个库（例如networkx）来加载它，但是由于我的文件很大，所以我不想保存并重新加载它。有什么方法可以将其保存在内存中吗？我想它看起来像这样：

import geopandas 
from io import BytesIO 

writeBytes = BytesIO()
### load the demo
world = geopandas.read_file(geopandas.datasets.get_path('naturalearth_lowres'))
### do something trivial to the demo
world['geometry'] = world['geometry'].buffer(0.05)
### save to bytes IO so that I can do something else with it without having to save and read a file 
world.to_file(writeBytes)

运行以上命令会产生TypeError：预期的str，字节或os.PathLike对象，而不是_io.BytesIO 这是完整的回溯：

            TypeError                                 Traceback (most recent call last)
            <ipython-input-1-1ba22f23181a> in <module>
                  8 world['geometry'] = world['geometry'].buffer(0.05)
                  9 ### save to bytes IO so that I can do something else with it without having to save and read a file                                                                                           
            ---> 10 world.to_file(writeBytes)

            ~/.conda/envs/geopandas/lib/python3.7/site-packages/geopandas/geodataframe.py in to_file(self, filename, driver, schema, **kwargs)
                427         """
                428         from geopandas.io.file import to_file
            --> 429         to_file(self, filename, driver, schema, **kwargs)
                430 
                431     def to_crs(self, crs=None, epsg=None, inplace=False):

            ~/.conda/envs/geopandas/lib/python3.7/site-packages/geopandas/io/file.py in to_file(df, filename, driver, schema, **kwargs)
                125     if schema is None:
                126         schema = infer_schema(df)
            --> 127     filename = os.path.abspath(os.path.expanduser(filename))
                128     with fiona_env():
                129         with fiona.open(filename, 'w', driver=driver, crs=df.crs,

            ~/.conda/envs/geopandas/lib/python3.7/posixpath.py in expanduser(path)
                233     """Expand ~ and ~user constructions.  If user or $HOME is unknown,
                234     do nothing."""
            --> 235     path = os.fspath(path)
                236     if isinstance(path, bytes):
                237         tilde = b'~'

感谢您的协助，谢谢

Geopandas使用bytesIO或等值（python3X）将shapefile保存在内存中

0 个答案: