pyhton打印所有存在不及格科目的学生记录
时间: 2023-09-23 15:02:34 浏览: 55
可以使用以下代码实现:
```
students = [
{'name': 'Tom', 'score': 85},
{'name': 'Jerry', 'score': 60},
{'name': 'Lucy', 'score': 70},
{'name': 'Tim', 'score': 45},
{'name': 'Bob', 'score': 90},
]
for student in students:
if student['score'] < 60:
print(student['name'], '不及格')
```
这段代码可以打印出所有存在不及格科目的学生记录。
相关问题
python输出成绩不及格的科目及姓名。
在Python中,你可以通过字典数据结构来存储学生的成绩信息,并遍历检查哪些学生的某个科目的分数低于及格线。这里是一个简单的例子:
```python
# 定义学生信息和及格分数线
students = {
'张三': {'数学': 85, '语文': 90, '英语': 70},
'李四': {'数学': 95, '语文': 80, '英语': 65},
'王五': {'数学': 78, '语文': 88, '英语': 55}
}
# 设定及格分数线
passing_score = 60
def check_failing_subjects(students):
failing_students = {}
for student, subjects in students.items():
failing_subjects[student] = [subject for subject, score in subjects.items() if score < passing_score]
return failing_students
result = check_failing_subjects(students)
print("不及格的学生及其科目:")
for student, subjects in result.items():
if subjects:
print(f"{student}: {', '.join(subjects)}")
用Python,已知两个Excel表格:学生信息表、期末考试成绩表打印所有存在不及格科目(单科<60分)的学生记录; ④ 获取指定科目的最高分、最低分以及平均分。⑤ 计算出3班女生语文成绩的平均分;
要完成这些任务,我们需要使用pandas库处理Excel文件并分析数据。以下是每一步的具体步骤:
### 1. 导入必要的库和读取Excel文件
```python
import pandas as pd
# 假设文件路径分别为'student_info.xlsx' 和 'exam_scores.xlsx'
student_info = pd.read_excel('student_info.xlsx')
exam_scores = pd.read_excel('exam_scores.xlsx')
```
### 2. 打印所有存在不及格科目(单科<60分)的学生记录
```python
# 假设'语文'、'数学'和'英语'是各科的成绩字段
def check_failing(subjects, threshold):
failing_students = {}
for subject in subjects:
failing_students[subject] = (student_info['姓名'][exam_scores[subject] < threshold])
return failing_students
failing_records = check_failing(['语文', '数学', '英语'], 60)
for subject, students in failing_records.items():
print(f"{subject}不及格的学生:{students}")
```
### 3. 获取指定科目的最高分、最低分以及平均分
```python
# 示例获取语文的统计信息
subject = '语文'
high_score = exam_scores.loc[exam_scores['语文'].idxmax(), '姓名']
low_score = exam_scores.loc[exam_scores['语文'].idxmin(), '姓名']
average_score = exam_scores['语文'].mean()
print(f"语文最高分:{high_score}, 最低分:{low_score}, 平均分:{average_score}")
```
### 4. 计算出3班女生语文成绩的平均分
假设'班级'和'性别'字段在数据表中可用:
```python
class_3_female_scores = exam_scores[(exam_scores['班级'] == '3') & (exam_scores['性别'] == '女')]['语文']
avg_class_3_female = class_3_female_scores.mean()
print(f"3班女生语文平均分:{avg_class_3_female}")
```
### 结合以上代码块,整体代码如下:
```python
# ... 之前的部分代码 ...
# 3班女生语文平均分
class_3_female_scores = exam_scores[(exam_scores['班级'] == '3') & (exam_scores['性别'] == '女')]['语文']
avg_class_3_female = class_3_female_scores.mean()
print(f"3班女生语文平均分:{avg_class_3_female}")
# ... 之前获取指定科目统计信息的部分代码 ...
```
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