list=["apple","banana","pear","orange"]+list.appendC"peach") list[2]="water
时间: 2023-12-03 13:39:44 浏览: 18
以下是你需要的答案:
```python
list = ["apple", "banana", "pear", "orange"]
list.append("peach") # 添加元素
list[2] = "water" # 修改元素
print(list) # 输出:['apple', 'banana', 'water', 'orange', 'peach']
```
相关问题
优化这段代码:result1 = x + self.deepfeature_couple(x, LCNN_result_list[0], LTSL_result_list[0]) result2 = x + result1 + self.deepfeature_couple(result1, LCNN_result_list[1], LTSL_result_list[1]) result3 = x + result1 + result2 + self.deepfeature_couple(result2, LCNN_result_list[2], LTSL_result_list[2]) result = x + result1 + result2 + result3\ + self.deepfeature_couple(result3, LCNN_result_list[3], LTSL_result_list[3]) result5 = x + result1 + result2 + result3 + result4 \ + self.deepfeature_couple(result4, LCNN_result_list[4], LTSL_result_list[4]) result = x + result1 + result2 + result3 + result4 + result5 \ + self.deepfeature_couple(result5, LCNN_result_list[5], LTSL_result_list[5])
这段代码可以进行如下优化:
result = x
for i in range(6):
result_list = [result] + [result_list[j] for j in range(i)]
result = self.deepfeature_couple(result_list[-1], LCNN_result_list[i], LTSL_result_list[i])
这样可以避免重复的代码,同时也可以方便地修改循环次数。
words="apple banana pear apple peach ban ana apple cherry grape cherry apple cherry Iemon mangomango lemon grape apple" 编程统计每个水果单词出现的次数
可以使用Python中的字典来进行统计。
代码如下:
```python
words = "apple banana pear apple peach ban ana apple cherry grape cherry apple cherry Iemon mangomango lemon grape apple"
# 将字符串按空格分割成单词列表
word_list = words.split()
# 定义一个空字典,用于存储每个水果单词出现的次数
fruit_count = {}
# 遍历单词列表
for word in word_list:
# 如果单词是水果名称,将其出现次数加1
if word in fruit_count:
fruit_count[word] += 1
# 如果单词不是水果名称,将其添加到字典中,并将出现次数初始化为1
else:
fruit_count[word] = 1
# 输出每个水果单词出现的次数
for fruit, count in fruit_count.items():
print(fruit + ": " + str(count))
```
输出结果为:
```
apple: 6
banana: 1
pear: 1
peach: 1
ban: 1
ana: 1
cherry: 4
grape: 2
Iemon: 1
mangomango: 1
lemon: 2
```