Question

我创建了以下类：

SchoolId    SchoolYear  TermCode  TermBegin    TermEnd     TermCodeId
   8CFD1    2016         TM1        08/29/2016  10/07/2016  F375E7
   8CFD1    2016         TM2        10/10/2016  11/25/2016  898EF5
   8CFD1    2016         TM3        11/28/2016  02/01/2017  F5140C
   8CFD1    2016         TM4        02/02/2017  03/10/2017  DD95B1
   8CFD1    2016         TM5        03/13/2017  05/05/2017  BE3635
   8CFD1    2016         TM6        05/08/2017  06/09/2017  2B94F0
   8CFD1    2016         YR         08/29/2016  10/07/2016  d97C9C
   8CFD1    2016         YR         10/10/2016  11/25/2016  e30980
   8CFD1    2016         YR         11/28/2016  02/01/2017  ef5de2
   8CFD1    2016         YR         02/02/2017  03/10/2017  bbe78f
   8CFD1    2016         YR         03/13/2017  05/05/2017  ca28a7
   8CFD1    2016         YR         05/08/2017  06/09/2017  2340c1

当我在以下函数中调用此类时：

class Student:
    def __init__(self, name, id, email):
        self.__name = name
        self.__id = id
        self.__email_id = email
        self.__marks = []

#accessors
    def get_name(self):
        return self.__name

    def get_email(self):
        return self.__email_id

    def get_id(self):
        return self.__id

    def get_marks(self):
        return self.__marks

#mututators
    def set_name(self, name):
        self.__name = name

    def set_id(self, id):
        self.__id = id

    def set_email(self, email):
        self.__email_id = email

    def set__marks(self, marks):
        self.__marks = marks

#formatted string representation of the student
    def __str__(self):
        return "%s: %s, %s, marks: %s" % (self.__id, self.__name, self.__email_id, self.__marks)

#appends the marks to the end of the marks list
    def append_marks(self, marks):
        self.__marks.append(marks)

它没有正确打印文本。出于某种原因，除了最后一个学生之外，它会混淆一切的格式。

示例：

def read_classlist():
        #This function reads the classlist from file.
        global studentslist
        studentslist = []
        try:
                file=input("Enter name of the classlist file: ")
                with open(file) as f:
                        for line in f:
                                data=line.split(",")
                                s=Student(data[0],data[1],data[2])
                                studentslist.append(s)
                print("Completed reading of file %s" % file)
                for student in studentslist:
                        print(student)
                display_separator()
                menu()
                return
        except IOError:
                print("File %s could not be opened" % file)
                display_separator()
                menu()
                return

我无法弄清楚为什么它会在电子邮件后创建一个新行。它为每个数据文件执行此操作，但显示的最后一个学生将始终是正确的。

我不太明白。

任何帮助都会很棒！

Answer 1

我认为你应该改变这一行

data=line.split(",")

到

data=line.rstrip().split(",")

这将从您的数据中删除返回到新行字符\n，并且您将获得所需的输出。

打印时格式化问题

1 个答案: