numpyを使うとpythonでデータをメモリに取り込むことができます.

# -*- coding: utf-8 -*-
#~ #----------------------------------------------------------------------
#~ module:wlab
#~  Filename:wloadsave.py
#~  Function :
#~  def str2num(LineString,comment='#'):
#~  def file2list(Filename,comment='#',SkipHeadLine=0):
#~  def str2list(String,comment='#',SkipHeadLine=0):
#~  def dlmread(Filename,comment='#',dtype=numpy.float64,SkipHeadLine=0):
#~  def dlmwrite(Filename, X, fmt='%16.8e',delimiter=' ', newline='
',header=''):
#~    :
#~                (   )
#~      matlab  dlmread dlmwrite  
#~                 str2num,str2list
#~  Data: 2013-08-08,   
#~  Author:   
#~  Email:[email protected]
#~ #----------------------------------------------------------------------
import numpy
import scipy
#~ #----------------------------------------------------------------------
def str2num(LineString,comment='#'):
    """
    #~ >>>NumArray=str2num(LineString,comment='#')
    #~          Double            
    #~  '#'        ,    
    #~     numpy.array  
    """

    from StringIO import StringIO
    import re,numpy

    NumArray=numpy.empty([0],numpy.float64)
    NumStr=LineString.strip()
    #~ ignore comment string
    for cmt in comment:
        CmtRe=cmt+'.*$'
        NumStr=re.sub(CmtRe, " ", NumStr.strip(), count=0, flags=re.IGNORECASE)

    #~ delete all non-number characters,replaced by blankspace.
    NumStr=re.sub('[^0-9.e+-]', " ", NumStr, count=0, flags=re.IGNORECASE)

    #~ Remove incorrect combining-characters for double type.
    NumStr=re.sub('[.e+-](?=\s)', " ", NumStr.strip(), count=0, flags=re.IGNORECASE)
    NumStr=re.sub('[.e+-](?=\s)', " ", NumStr.strip(), count=0, flags=re.IGNORECASE)
    NumStr=re.sub('[e+-]$', " ", NumStr.strip(), count=0, flags=re.IGNORECASE)
    NumStr=re.sub('[e+-]$', " ", NumStr.strip(), count=0, flags=re.IGNORECASE)

    if len(NumStr.strip())>0:
        StrIOds=StringIO(NumStr.strip())
        NumArray= numpy.genfromtxt(StrIOds)

    return NumArray
#~ #----------------------------------------------------------------------
def file2list(Filename,comment='#',SkipHeadLine=0):
    """
    #~  >>>NumList=file2list(Filename,comment='#',SkipHeadLine=0)
    #~            
    #~           Double            
    #~   '#'        ,    
    #~            ：SkipHeadLine
    #~         numpy.array  
    #~    numpy.array     
    #~    :                 
    """

    from StringIO import StringIO
    import re,numpy
    file=open(Filename, 'r')
    String = file.read()
    file.close()

    NumList=[]
    StringList=String.split('
')#          
    LineNum=0
    for Line in StringList:
        LineNum=LineNum+1
        if (LineNum>SkipHeadLine):
            NumArray=str2num(Line,comment)
            if len(NumArray)>0:
                NumList.append(NumArray)

    return  NumList

#~ #----------------------------------------------------------------------
def str2list(String,comment='#',SkipHeadLine=0):
    """
    #~  >>>NumList=str2list(String,comment='#',SkipHeadLine=0):
    #~            
    #~           Double            
    #~   '#'        ,    
    #~            ：SkipHeadLine
    #~         numpy.array  
    #~    numpy.array     
    #~    :                 
    """

    from StringIO import StringIO
    import re,numpy

    NumList=[]
    StringList=String.split('
')#          
    LineNum=0
    for Line in StringList:
        LineNum=LineNum+1
        if (LineNum>SkipHeadLine):
            NumArray=str2num(Line,comment)
            if len(NumArray)>0:
                NumList.append(NumArray)

    return  NumList

#~ #----------------------------------------------------------------------
def dlmread(Filename,comment='#',dtype=numpy.float64,SkipHeadLine=0):
    """
    #~  Load Data From Txt-File.
    #~  >>>NumpyArray= dlmread(Filename,comment='#',dtype=numpy.float64,SkipHeadLine=0)
    #~        :";",",",    (  \t)  
    #~   #          ,     
    #~            ：SkipHeadLine
    #~  Return Value:      (numpy.ndarray)
    #~                 ,         ,       ,     
    #~    ：
    #~        ，   #          ,     
    #~ >>> x=dlmread(Filename)
    #~   #！          ,     
    #~ >>> x=dlmread(Filename,comment='#!')
    #~        ，      
    """

    import numpy
    NumList=file2list(Filename,comment='#',SkipHeadLine=SkipHeadLine)
    #~   NumList    
    if (len(NumList)>0):
        dlsize=[]#        
        for dL in NumList:
            dlsize.append(dL.size)
         #~   dlsize   
        MinColumnSize=min(dlsize)#       
        MaxColumnSize=max(dlsize)#       
        #~        
        NumpyArray=numpy.empty([len(NumList),MinColumnSize],dtype=dtype)

        row=range(0,len(NumList))
        colum=range(0,MinColumnSize)

        for i in row:
            for j in colum:
                NumpyArray[i][j]=NumList[i][j]
    else:
        NumpyArray=[]

    return NumpyArray

#~ #----------------------------------------------------------------------
def dlmwrite(Filename, X, fmt='%16.8e',delimiter=' ', newline='
',header=''):
    """
    #~ Save Data To Txt-File.
    #~ >>> dlmwrite(Filename, X, fmt='%16.8e',delimiter=' ', newline='
',header=''):
    """
    import numpy
    numpy.savetxt(Filename, X, fmt=fmt, delimiter=delimiter, newline=newline,header=header)
    return

#~ #----------------------------------------------------------------------
def tests():
    x=numpy.random.randn(3,4)
    print(x)
    Filename='x.txt'
    header='look at this file'
    dlmwrite(Filename,x,header=header)
    y=dlmread(Filename)
    print(y)
    return  'wlab tests finished!'

#~ #     
if __name__ == '__main__':
    x=numpy.random.randn(3,4)
    print(x)
    Filename='x.txt'
    header='look at this file'
    dlmwrite(Filename,x,header=header)
    y=dlmread(Filename)
    print(y)