参考的东东http://edu.51cto.com/lesson/id-19492.html
例子1,格式化数据写入文件:
fid=open('filename.txt','a')
datafmt='{0}\t{1}'.format(10,10)
fid.write(datafmt)
例子2,从文件里读取数据并将其变成整型数据:
fid = open('filename.txt','r')
line = fd.readline()
line=line.split()
for i in line:
<span style="white-space:pre"> </span>print i
fd.clpse()