📅  最后修改于: 2020-09-20 13:36:05             🧑  作者: Mango
count()
方法的语法为:
list.count(element)
count()
方法采用一个参数:
count()
方法返回element
出现在列表中的次数。
# vowels list
vowels = ['a', 'e', 'i', 'o', 'i', 'u']
# count element 'i'
count = vowels.count('i')
# print count
print('The count of i is:', count)
# count element 'p'
count = vowels.count('p')
# print count
print('The count of p is:', count)
输出
The count of i is: 2
The count of p is: 0
# random list
random = ['a', ('a', 'b'), ('a', 'b'), [3, 4]]
# count element ('a', 'b')
count = random.count(('a', 'b'))
# print count
print("The count of ('a', 'b') is:", count)
# count element [3, 4]
count = random.count([3, 4])
# print count
print("The count of [3, 4] is:", count)
输出
The count of ('a', 'b') is: 2
The count of [3, 4] is: 1