Python读取txt文件

Python读取txt文件，有两种方式：

(1)逐行读取

1 data=open("data.txt")
2 line=data.readline()
3 while line:
4       print line
5       line=data.readline()

(2)一次全部读入内存

1 data=open("data.txt")
2 for line in data.readlines():
3       print line