added practice 2

Author: zuneee

practice2/IlinSV/file1.txt

@@ -0,0 +1,4 @@
+asdfadsfa
+dsf
+ads
+f

practice2/IlinSV/file2.txt

@@ -0,0 +1 @@
+sadfadsfadfasd

practice2/IlinSV/file3.txt

@@ -0,0 +1,4 @@
+adsfadsfasd
+fads
+f
+f

practice2/IlinSV/practice2.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+def LineCount(S):
+
+try:
+lines = (open(S,"r").readlines())
+return len(lines)
+except: 
+return -1
+
+def main(args):
+files = ["file1.txt", "file2.txt", "file3.txt"]
+count = 0;
+for i in range(3):
+if (LineCount(files[i]) != -1):
+count += LineCount(files[i])
+else:
+print "ERROR (no such file: " + files[i] + ")"
+exit(0)
+print count
+
+if __name__ == '__main__':
+ import sys
+ main(sys.argv[:])
+