python字符串转浮点数组 python 工具 字符串转numpy浮点数组的实现

import numpy
import scipy
def str2num(LineString,comment='#'):
 
  from io import StringIO as StringIO
  import re,numpy
 
  NumArray=numpy.empty([0],numpy.int16)
  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


if __name__ == "__main__":
  str = input("Enter your input: ");
  donser=str2num(str)
  print(donser)