Python中能够根据输入的某个学生姓名查询出该生的成绩信息，然后能按专业班级输出某门课程的最高分的学生信息，最后能输出某班某门成绩的平均成绩，已经按照专业班级对某门课程的成绩从高到低排序

这个问题需要通过一个数据结构来实现，例如使用字典来存储学生的信息。每个学生的信息可以包括姓名、专业、班级和成绩等内容。假设有以下数据：

students = {
    "Tom": {"major": "Computer Science", "class": "CS101", "score": {"Math": 80, "English": 90, "Programming": 85}},
    "Jerry": {"major": "Computer Science", "class": "CS102", "score": {"Math": 75, "English": 85, "Programming": 90}},
    "Bob": {"major": "Electrical Engineering", "class": "EE101", "score": {"Math": 85, "Physics": 80, "Circuit": 90}}
}

根据输入的学生姓名查询该生的成绩信息，可以使用以下代码实现：

name = input("Please enter student's name: ")
if name in students:
    print("Name: ", name)
    print("Major: ", students[name]["major"])
    print("Class: ", students[name]["class"])
    print("Score: ", students[name]["score"])
else:
    print("Student not found.")

按专业班级输出某门课程的最高分的学生信息，可以使用以下代码实现：

course = input("Please enter course name: ")
max_score = 0
max_student = ""
for name in students:
    if course in students[name]["score"]:
        if students[name]["score"][course] > max_score:
            max_score = students[name]["score"][course]
            max_student = name
if max_student != "":
    print("Course: ", course)
    print("Max score: ", max_score)
    print("Student: ", max_student)
else:
    print("Course not found.")

输出某班某门成绩的平均成绩，并按专业班级对某门课程的成绩从高到低排序，可以使用以下代码实现：

course = input("Please enter course name: ")
class_name = input("Please enter class name: ")
total_score = 0
count = 0
class_scores = {}
for name in students:
    if students[name]["class"] == class_name and course in students[name]["score"]:
        score = students[name]["score"][course]
        total_score += score
        count += 1
        if students[name]["major"] not in class_scores:
            class_scores[students[name]["major"]] = {}
        class_scores[students[name]["major"]][name] = score
if count > 0:
    avg_score = total_score / count
    print("Course: ", course)
    print("Class: ", class_name)
    print("Average score: ", avg_score)
    print("Scores:")
    for major in class_scores:
        print(major)
        sorted_scores = sorted(class_scores[major].items(), key=lambda x: x[1], reverse=True)
        for item in sorted_scores:
            print(item[0], item[1])
else:
    print("No record found.")