Python RuntimeWarning:在双\u标量中遇到无效值

算法的步骤：

1-用p和Q初始化

2-算法的主要过程在（循环）的第一个

开始时开始

这是我为上述步骤编写的程序：


但当我运行上述程序时，我会遇到以下错误：

>>> ================================ RESTART ================================
>>> 
step 0
step 1
step 2
step 3

Warning (from warnings module):
  File "C:\Python34\mf.py", line 42
    Q[k][j] = float(Q[k][j]) + alpha * (2 * eij * P[i][k] - beta * Q[k][j])
RuntimeWarning: overflow encountered in double_scalars

Warning (from warnings module):
  File "C:\Python34\mf.py", line 41
    P[i][k] = float(P[i][k]) + alpha * (2 * eij * Q[k][j] - beta * P[i][k])
RuntimeWarning: invalid value encountered in double_scalars

Warning (from warnings module):
  File "C:\Python34\mf.py", line 41
    P[i][k] = float(P[i][k]) + alpha * (2 * eij * Q[k][j] - beta * P[i][k])
RuntimeWarning: overflow encountered in double_scalars

Warning (from warnings module):
  File "C:\Python34\mf.py", line 42
    Q[k][j] = float(Q[k][j]) + alpha * (2 * eij * P[i][k] - beta * Q[k][j])
RuntimeWarning: invalid value encountered in double_scalars
step 4
[[ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]
 ..., 
 [ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]]
>>> 

最好知道
DS.csv
@romeric的内容。excel窗口的标题是“DS.csv”。哈米德：你确定CSV解释正确吗？你是否打印了
R
，或者至少打印了其中的一部分，以查看它的外观是否符合要求？@swenzel完全没有注意到这一点。将
R
数组更改为随机数组不会发出任何溢出警告，因此我认为
csv
读取不正确。此外，您正在将文件行作为字符串读取并将其转换为浮点。检查像
1E-07
这样的值是否正确转换。我尝试了矩阵的一部分，得到了正确的结果。对于我遇到的错误数据量，内存如何？如何增加python的内存缓冲区或堆栈？！？最好知道
DS.csv
@romeric的内容。excel窗口的标题是“DS.csv”。哈米德：你确定CSV解释正确吗？你是否打印了
R
，或者至少打印了其中的一部分，以查看它的外观是否符合要求？@swenzel完全没有注意到这一点。将
R
数组更改为随机数组不会发出任何溢出警告，因此我认为
csv
读取不正确。此外，您正在将文件行作为字符串读取并将其转换为浮点。检查像
1E-07
这样的值是否正确转换。我尝试了矩阵的一部分，得到了正确的结果。对于我遇到的错误数据量，内存如何？如何增加python的内存缓冲区或堆栈？！？
>>> ================================ RESTART ================================
>>> 
step 0
step 1
step 2
step 3

Warning (from warnings module):
  File "C:\Python34\mf.py", line 42
    Q[k][j] = float(Q[k][j]) + alpha * (2 * eij * P[i][k] - beta * Q[k][j])
RuntimeWarning: overflow encountered in double_scalars

Warning (from warnings module):
  File "C:\Python34\mf.py", line 41
    P[i][k] = float(P[i][k]) + alpha * (2 * eij * Q[k][j] - beta * P[i][k])
RuntimeWarning: invalid value encountered in double_scalars

Warning (from warnings module):
  File "C:\Python34\mf.py", line 41
    P[i][k] = float(P[i][k]) + alpha * (2 * eij * Q[k][j] - beta * P[i][k])
RuntimeWarning: overflow encountered in double_scalars

Warning (from warnings module):
  File "C:\Python34\mf.py", line 42
    Q[k][j] = float(Q[k][j]) + alpha * (2 * eij * P[i][k] - beta * Q[k][j])
RuntimeWarning: invalid value encountered in double_scalars
step 4
[[ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]
 ..., 
 [ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]
 [ nan  nan  nan ...,  nan  nan  nan]]
>>>