问题描述
我为我的 jupyter 笔记本安装了 libpgm
pip 安装 libpgm
然后按如下方式运行几次导入
import sys
import json
import libpgm
from libpgm.nodedata import NodeData
from libpgm.graphskeleton import GraphSkeleton
from libpgm.hybayesiannetwork import HyBayesianNetwork
我有一个错误
Traceback (most recent call last):
File "C:\Users\19413\conda\lib\site-packages\IPython\core\interactiveshell.py",line 3343,in run_code
exec(code_obj,self.user_global_ns,self.user_ns)
File "<ipython-input-7-80536a116c64>",line 4,in <module>
from libpgm.nodedata import NodeData
File "C:\Users\19413\conda\lib\site-packages\libpgm\nodedata.py",line 91
print "Error: NodeData did not recognize input file format."
^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print("Error: NodeData did not recognize input file format.")?
有谁知道是什么导致了错误?
非常感谢您的帮助
解决方法
好吧,错误报告的最后一行准确地说明了导致错误的原因:
Missing parentheses in call to 'print'. Did you mean print("Error: NodeData did not recognize input file format.")?
与 Python 2 不同,Python 3 要求将所有打印语句括在括号中。我不熟悉 libpgm
库,但在我看来这 has been fixed five years ago。请确保您使用此库的最新版本或使用 Python 2 运行您的代码。