pandas NetworkX From_Pandas_dataframe
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NetworkX From_Pandas_dataframe
提问by user2723240
I have an error with NetworkX which says 'module' has no attribute 'from_pandas_dataframe.'
我有一个 NetworkX 错误，它说“模块”没有属性“from_pandas_dataframe”。
I have a dataframe called nflroster that is format as:
我有一个名为 nflroster 的数据框，其格式为：
Index . . . Player Team Year
0 . . . Player1 Team1 2014
1 . . .Player2 Team1 2014
2 . . . Player3 Team2 2014
.
. . . . . . .
So according to the documentation here networkx documentationthis following line should work
因此，根据此处的文档networkx 文档，以下行应该可以工作
G = nx.from_pandas_dataframe(nflroster,str, 'Team')
However when I run this in Ipy notebook I run into the error, 'module' object has no attribute 'from_pandas_dataframe'.
但是，当我在 Ipy notebook 中运行它时，我遇到了错误，“模块”对象没有属性“from_pandas_dataframe”。
I import the following
我导入以下内容
import numpy as np
import networkx as nx
import matplotlib.pyplot as plt
import pandas as pd
from pandas import DataFrame as df
采纳答案by Gustavo Avila
I had the same problem here. This is how I solved it:
我在这里遇到了同样的问题。我是这样解决的：
Try installing networkx from source instead of installing it through pip.
尝试从源代码安装 networkx，而不是通过 pip 安装。
Source Install Step by Step
一步一步的源安装
Download the source (tar.gz or zip file) from https://pypi.python.org/pypi/networkx/ or get the latest development version from https://github.com/networkx/networkx/
Unpack and change directory to the source directory (it should have the files README.txt and setup.py).
Run python setup.py install to build and install
Notice that this specific function From_Pandas_dataframewill be installed in convert_matrix.py file at the networkx folder.
请注意，此特定函数From_Pandas_dataframe将安装在 networkx 文件夹中的 convert_matrix.py 文件中。
回答by hlin117
You probably installed an incorrect version of networkx. You probably should check whether you have 1.10.0 <= see history here
回答by marianstefi20
If we look in the networkx's build folder, in __init__.py, we see an import from networkx.convert_matrix. Looking thru the convert_matrix.pyfile we can see the following allowed external dependencies:
如果我们查看 networkx 的构建文件夹，在__init__.py 中，我们会看到来自 networkx.convert_matrix 的导入。查看convert_matrix.py文件，我们可以看到以下允许的外部依赖项：
__all__ = ['from_numpy_matrix', 'to_numpy_matrix',
'from_pandas_adjacency', 'to_pandas_adjacency',
'from_pandas_edgelist', 'to_pandas_edgelist',
'to_numpy_recarray',
'from_scipy_sparse_matrix', 'to_scipy_sparse_matrix',
'from_numpy_array', 'to_numpy_array']
As you can see, from_pandas_dataframe does not exist. Although this might have been in the 1.10 version.
如您所见， from_pandas_dataframe 不存在。虽然这可能是在1.10 版本中。
So in the end, always keep a keen eye on the version number.
所以最后，请始终密切关注版本号。
回答by MaxU
yet another way to search for a method in Networkx API:
在 Networkx API 中搜索方法的另一种方法：
In [199]: [m for m in nx.__dir__() if 'pandas' in m]
Out[199]:
['from_pandas_adjacency',
'to_pandas_adjacency',
'from_pandas_edgelist',
'to_pandas_edgelist']
