zhengyao1 0c64947c6f make string.letters python3 compatible
The string.letters in python2 was supported. But in python3,
string.letters was removed. In python3, recommend using
string.ascii_letters instead. This patch fix it.

Change-Id: I7bfe2b94c0c740d9143ddddc655f8086a537f24b
Closes-Bug: #1595786
2016-06-24 18:53:53 +08:00
..
2016-06-22 09:40:40 +02:00