How to save a list as numpy array in python

Question

Is possible to construct a NumPy array from a python list

User · Accepted Answer

First of all  I d recommend you to go through NumPy s  Quickstart tutorial  which will probably help with these basic questions  You can directly create an array from a list as  import numpy as np a   np array   2 3 4     Or from a from a nested list in the same way  import numpy as np a   np array    2 3 4    3 4 5

User · Answer

Yes it is   a   numpy array  1 2 3

User · Answer

you mean something like this    from numpy  import array a   array  your list

User · Answer

Here is a more complete example   import csv import numpy as np  with open  filename   rb   as csvfile       cdl   list  csv reader csvfile delimiter   t         print  Number of records       str len cdl     then later  npcdl   np array cdl    Hope this helps

User · Answer

You can use numpy asarray  for example to convert a list into an array    gt  gt  gt  a    1  2   gt  gt  gt  np asarray a  array  1  2

User · Answer

import numpy as np          other code   some list comprehension  t  nodel  nodenext i  j    for j in idx               for each link  find the node lables               t is the list of node labels    Convert the list to a numpy array using the array method specified in the numpy library   t np array t    This may be helpful  https   numpy org devdocs user basics creation html

User · Answer

You want to save it as a file   import numpy as np  myList    1  2  3   np array myList  dump open  array npy    wb          and then read   myArray   np load open  array npy    rb

User · Answer

maybe   import numpy as np a   1 1   2 2   b np asarray a  print type b     output    lt class  numpy ndarray  gt

User · Answer

I suppose  you mean converting a list into a numpy array  Then   import numpy as np    b is some list  then         a   np array b  reshape lengthDim0  lengthDim1     gives you a as an array of list b in the shape given in reshape

[python] How to save a list as numpy array in python?

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