1, 使用文件
#vim /etc/motd
"1 hello world"
2 ...... yes
3 no you are a shadiao
4 hahh maye you are right
ddddddddddddddddddddddddddddddddddd
ccccccccccccc
vvv
1 2，python脚本
2 [root@localhost python]# vim 7.py
3
4 f=open("/etc/motd")
5 alllines = [line.strip() for line in f]
6 f.close()
7 linestr = ''
8 lenline = 0
9 for eachline in alllines:
10 lenstr = len(eachline)
11 if lenstr > lenline:
12 lenline = lenstr
13 linestr = eachline
14 print ("The longest str is %s" % linestr)
15 print ("The number is %d" % lenline)
3，运行结果
[root@localhost python]# python 7.py
The longest str is ddddddddddddddddddddddddddddddddddd
The number is 35
