无法理解生成的错误

Question

错误部分--> student_grade_system = StudentGradeSystem(sys.argv1)

错误的地方--> 追溯（最近一次通话）：文件 "C:\Users\Daphnie\Desktop\Python_code\student_grade\grade_system.py"，第 111 行，位于主要的（）文件 "C:\Users\Daphnie\Desktop\Python_code\student_grade\grade_system.py"，第 105 行，在 main 中 student_grade_system = StudentGradeSystem(sys.argv1) IndexError：列表索引超出范围 代码：

import sys
from student import Student
class StudentGradeSystem(object):
def __init__(self, score_file):
    self._score_file = score_file
    self._students = []
    self._class_avg = 0.0
    self._kor_avg = 0.0
    self._eng_avg = 0.0
    self._math_avg = 0.0
    self._register_students()

def _register_students(self):
    with open(self._score_file, "rt") as fp:
        lines = fp.readlines()
        for line in lines:
            items = (line.strip()).split(",")
            num = items[0]
            name = items[1]
            kor = int(items[2])
            eng = int(items[3])
            math = int(items[4])
            student = Student(num, name, kor, eng, math)
            self._students.append(student)

def _calculate_student_order(self):
    temp_students = sorted(self._students, key = lambda x: x.total, reverse = True)
    order = 1
    for student in temp_students:
        student.order = order
        order = order + 1
    self._students = temp_students

def _calculate_class_avg(self):
    total = 0
    for student in self._students:
        total = total + student.total
    self._class_avg = total / len(self._students)

def _calculate_kor_avg(self):
    total = 0
    for student in self._students:
        total = total + student.kor
    self._kor_avg = total / len(self._students)

def _calculate_eng_avg(self):
    total = 0
    for student in self._students:
        total = total + student.eng
    self._eng_avg = total / len(self._students)

def _calculate_math_avg(self):
    total = 0
    for student in self._students:
        total = total + student.math
    self._math_avg = total / len(self._students)

def _calculate_class_information(self):
    self._calculate_class_avg()
    self._calculate_kor_avg()
    self._calculate_eng_avg()
    self._calculate_math_avg()

def process(self):
    self._calculate_student_order()
    self._calculate_class_information()

def output_result(self, output_file):
    student_output_format = "번호: {:2}, 이름: {}, 국어: {}, 영어: {}, 수학: {}, 총점: {}, 평균: {:.2f}, 등수: {}\n"

    with open(output_file, "wt") as fp:
        for student in self._students:
            student_output = student_output_format.format(student.num, student.name, student.kor, student.eng,
                    student.math, student.total, student.avg, student.order)
            fp.write(student_output)

        fp.write("\n")
        fp.write("반 평균: %.2f\n" % self._class_avg)
        fp.write("국어 평균: %.2f\n" % self._kor_avg)
        fp.write("영어 평균: %.2f\n" % self._eng_avg)
        fp.write("수학 평균: %.2f\n" % self._math_avg)
    print("성적 처리가 끝났습니다.")


def main():
student_grade_system = StudentGradeSystem(sys.argv[1])
student_grade_system.process()
student_grade_system.output_result(sys.argv[2])
if __name__ == "__main__":
main()
input("end")

Answer 1

你到底有什么不明白的？错误消息非常清楚：您在第 105 行有一个 IndexError（您试图访问列表、元组或其他类似索引序列中不存在的项目），即

student_grade_system = StudentGradeSystem(sys.argv[1])

这一行只有一个索引访问 - sys.argv[1] - 所以它显然是罪魁祸首。由于您的程序显然需要传递一些参数，因此您有责任确保 1. 它们已记录在案，并且 2. 已有效地传递给程序（这里显然不是这种情况）。

无法理解生成的错误

Unable to understand the error generated

python

indexing

range