Troy's Code a class | Python Fiddle

from student import Student ## From the File import the thing inside it
import csv

class Class:
    """
    This file is used to create a 'class' of 'students.' It will take a csv of names and 'used' values
    and will create a list of students. This list of students will be able to be quiered by student
    name for info, and the students will be editable. At the end of execution, it is possible to write the
    class to a CSV file for storage.
    """
    def __init__(self, classFile="class.txt"):
        """ Dictionaries are Hashmaps and lists are just Linked Lists. 
        classDict ={} provides a O(1) lookup for students
        calssList =[] provides a list example for working with data """
        self._classDict = {}
        self._classList = []
        studentInfo = self._importClass(classFile)
        for entry in studentInfo:
            if len(entry) < 2: print "Entry with less than 2 fields";continue ## eliminates empty entries
            elif len(entry) > 2: print "Error with text file: ",entry
            else: self.addStudent(entry[0],entry[1])
                
    def _importClass(self, fileName):
        """
        This handles reading from a csv. Returns the raw data. Will be in the format: 
        list of list of data, meaning: 
        [
        [data,data,data],
        [data,data,data],
        ...
        ] 
        Also known as 2 D aray. The lists contained will have the student information. 
        """
        importedData = []
        with open(str(fileName),'rb') as F: 
            r = csv.reader(F,delimiter = ',')
            for row in r: 
                importedData.append(row)
        return importedData
    
    def _exportClass(self, fileName):
        with open (str(fileName),'wb') as F: 
            W = csv.writer(F,delimiter=',')
            W.writerow(["Name", "Has Been Picked?"])
            for student in self._classList:
                W.writerow([student.whoIs(),bool(eval(student.wasPicked()))])

def backupClass(self, fileName="class.txt"):
        self._exportClass(fileName)

def addStudent(self, Name, wasPicked=False):
        newStudent = Student(Name, wasPicked)
        self._classDict[Name] = newStudent
        self._classList.append(newStudent)
    
    def lookupStudent(self, Name):
        if Name in self._classDict: 
            return self._classDict[Name]
        else: 
            return None

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