Begin with list of grades = ['A', 'B', 'A', 'C', 'B', 'A']. use python node to Count the numbers of each grade.
时间: 2023-03-31 14:01:06 浏览: 130
好的,这个问题我可以回答。可以使用 Python 的 Counter 函数来计算每个成绩出现的次数,代码如下:
```python
from collections import Counter
grades = ['A', 'B', 'A', 'C', 'B', 'A']
grade_counts = Counter(grades)
print(grade_counts)
```
输出结果为:
```
Counter({'A': 3, 'B': 2, 'C': 1})
```
这表示成绩 A 出现了 3 次,成绩 B 出现了 2 次,成绩 C 出现了 1 次。
相关问题
Begin with list of `grades = ['A', 'B', 'A', 'C', 'B', 'A']`. **Count** the numbers of **each** grade.
好的,我可以回答这个问题。根据给出的列表 `grades = ['A', 'B', 'A', 'C', 'B', 'A']`,我们可以统计每个等级出现的次数。其中,A 等级出现了 3 次,B 等级出现了 2 次,C 等级出现了 1 次。因此,A 等级出现了 3 次,B 等级出现了 2 次,C 等级出现了 1 次。
Begin with a list of grades = ['A', 'B', 'X', 'C', 'B', 'A']. Use a method to find the index number of the item 'X'. Then replace this item with 'A'.
这个问题可以回答。要找到 'X' 的索引号,可以使用 grades.index('X') 方法。然后,使用 grades[grades.index('X')] = 'A' 将 'X' 替换为 'A'。最终的 grades 列表应该是 ['A', 'B', 'A', 'C', 'B', 'A']。
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