使用string.count（）方法时，我收到一个错误，TypeError：期望一个字符缓冲区对象

Question

s = "That that is is that that is not is not is that it it"
sub = "s"
print "str.count(sub, 4, 40) : ", str.count(sub, 4, 40)

使用string.count()方法时收到以下错误。

错误：

TypeError: expected a character buffer object

Answer 1

不要在str类上调用该方法，而是调用字符串对象：

s = "That that is is that that is not is not is that it it"
sub = "s"
print "s.count(sub, 4, 40) : ", s.count(sub, 4, 40)