done task 3 anded only task3.py

task3.py

+def f():
+	t=open('mat.txt','r')
+	l = [map(int, line.split(' ')) for line in t ]
+	r=l[0][0];
+	c=l[0][1];
+
+	b=[['None']*c for _ in range(r)]
+	b=l[1:];
+	trans=[list(i) for i in zip(*b)]
+	f=open("transpose.txt","wb")
+	f.write(str(c)+" "+str(r)+'\n')
+	for i in range(c):
+		s=""
+		for j in range(r):
+			s=s+str(trans[i][j])+" "
+		f.write(s+'\n')
+	f.close()
+f()