1 s = "Hello" 2 s += " world!" 3 print s # Hello world! 4 print len(s) # 12 5 6 s2 = "Hello worlds!" 7 print s2 # Hello worlds! 8 print len(s2) # 13 9 print s < s2 # True 10 print s <= s2 # True 11 print s == s2 # False 12 print s != s2 # True 13 print s >= s2 # False 14 print s > s2 # False 15 16 print s[0] # H 17 print s[-1] # ! 18 19 print ord(s[0]) # 72 20 21 try: 22 print ord(s) # should raise an exception 23 except ValueError, exc: 24 print "ord(s): value is not appropriate", exc.value 25 26 l = ["Hello", "world!"] 27 s3 = " ".join(l) 28 print s3 # Hello world! 29 print len(s3) # 12 30 31 s4 = "".join(l) 32 print s4 # Helloworld! 33 print len(s4) # 11 34 35 s5 = "--".join(l) 36 print s5 # Hello--world! 37 print len(s5) # 13 38 39 print hash(s) 40 print hash(s2) 41 print hash(s3) 42 print hash(s4) 43 print hash(s5)