练习6 字符串和文本

x = "There are %d types of people." % 10
binary = "binary"
do_not = "don't"
y = "Those who know %s and those who %s."% (binary,do_not)

print x
print y

print "I said: %r." % x
print "I also said: '%s'." % y

hilarious = False
joke_evaluation = "Is n't that joke so funny?! %r"
print joke_evaluation % hilarious

w = "This is the left side of ..."
e = "a string with a right side."

print w + e