age = 21
name = "ali"
print "your age=" + str(age) + "your age=" + str(age) + "your age=" + str(age)
print "your age=%d, your age=%d, your age=%d," % (age,age,age)
print "your name=%s" % (name)
print "your age=%d, your name is %s" % (age, name)
print "%d%s%d%s" % (age, name, age, name)
print "%c" % (65)

a1 = "aa"
a2 = "ab"
a3 = "b"
print a1 < a2
print a2 < a3
print a3 < a2