python读取文件内容方法

1) readline 每次读一行,返回序列

2) readlines 一次全部读出,返回序列

3) numpy 的genfromtxt,返回为np的矩阵格式

      import numpy as np
      f=file(\'sample.txt\',\'r\')
      ll=np.genfromtxt(\'sample.txt\',dtype=None)
      lline=f.readlines()
      
      print ll,lline
      for line in lline
          print line
          singleline=f.readline()    
          source=line.rstrip()# 去除换行符
          name = source.split(\' \')[0]
          ra = source.split(\' \')[1]
          dec = source.split(\' \')[2]
          ........