将python csv转换成字典

Question

我对python很陌生。我需要创建一个将csv数据加载到字典中的类。

我希望能够控制键和值，所以让我们说以下代码，我可以随时提取出worker1.name或worker1.age。

class ageName(object):
'''class to represent a person'''
def __init__(self, name, age):
self.name = name
self.age = age

worker1 = ageName('jon', 40)
worker2 = ageName('lise', 22)

#Now if we print this you see that it`s stored in a dictionary
print worker1.__dict__
print worker2.__dict__
#
'''
{'age': 40, 'name': 'jon'}
#
{'age': 22, 'name': 'lise'}
#
'''
#

#when we call (key)worker1.name we are getting the (value)
print worker1.name
#
'''
#
jon
#
'''

但是我一直坚持将csv数据加载到键和值中。

[1]我要创建自己的密钥worker1 = ageName（[name]，[age]，[id]，[gender]）

[2]每个[名称]，[年龄]，[id]和[性别]都来自csv数据文件中的特定列

我真的不知道该如何处理。我尝试了许多方法，但失败了。我需要一些帮助来开始这一工作。

-—编辑这是我的原始代码

import csv

# let us first make student an object

class Student():
    def __init__(self):
        self.fname = []
        self.lname = []
        self.ID = []
        self.sport = []
        # let us read this file
        for row in list(csv.reader(open("copy-john.csv", "rb")))[1:]:
            self.fname.append(row[0])
            self.lname.append(row[1])   
            self.ID.append(row[2])
            self.sport.append(row[3])
    def Tableformat(self):
        print "%-14s|%-10s|%-5s|%-11s" %('First Name','Last Name','ID','Favorite Sport')
        print "-" * 45
        for (i, fname) in enumerate(self.fname):
           print "%-14s|%-10s|%-5s|%3s" %(fname,self.lname[i],self.ID[i],self.sport[i])
    def Table(self):
        print self.lname

class Database(Student):
    def __init__(self):
        g = 0
        choice = ['Basketball','Football','Other','Baseball','Handball','Soccer','Volleyball','I do not like sport']
        data = student.sport
        k = len(student.fname)
        print k
        freq = {}
        for i in data:
            freq[i] = freq.get(i, 0) + 1
        for i in choice:
            if i not in freq:
                freq[i] = 0
            print i, freq[i]


student = Student()
database = Database()

这是我当前的代码（不完整）

import csv
class Student(object):
    '''class to represent a person'''
    def __init__(self, lname, fname, ID, sport):
        self.lname = lname
        self.fname = fname
        self.ID = ID
        self.sport = sport
reader = csv.reader(open('copy-john.csv'), delimiter=',', quotechar='"')
student = [Student(row[0], row[1], row[2], row[3]) for row in reader][1::]
print "%-14s|%-10s|%-5s|%-11s" %('First Name','Last Name','ID','Favorite Sport')
print "-" * 45
for i in range(len(student)):
    print "%-14s|%-10s|%-5s|%3s" %(student[i].lname,student[i].fname,student[i].ID,student[i].sport)

choice = ['Basketball','Football','Other','Baseball','Handball','Soccer','Volleyball','I do not like sport']
lst = []
h = 0
k = len(student)
# 23
for i in range(len(student)):
    lst.append(student[i].sport) # merge together

for a in set(lst):
    print a, lst.count(a)

for i in set(choice):
    if i not in set(lst):
        lst.append(i)
        lst.count(i) = 0
        print lst.count(i)

Answer 1

import csv

reader = csv.reader(open('workers.csv', newline=''), delimiter=',', quotechar='"')
workers = [ageName(row[0], row[1]) for row in reader]

工人现在有所有工人的清单

>>> workers[0].name
'jon'

问题更改后添加了编辑

您使用旧样式类有什么原因吗？我在这里使用新样式。

class Student:
    sports = []
    def __init__(self, row):
       self.lname, self.fname, self.ID, self.sport = row
       self.sports.append(self.sport)
    def get(self):
       return (self.lname, self.fname, self.ID, self.sport)

reader = csv.reader(open('copy-john.csv'), delimiter=',', quotechar='"')
print "%-14s|%-10s|%-5s|%-11s" % tuple(reader.next()) # read header line from csv
print "-" * 45
students = list(map(Student, reader)) # read all remaining lines
for student in students:
    print "%-14s|%-10s|%-5s|%3s" % student.get()

# Printing all sports that are specified by students
for s in set(Student.sports): # class attribute
    print s, Student.sports.count(s)

# Printing sports that are not picked 
allsports = ['Basketball','Football','Other','Baseball','Handball','Soccer','Volleyball','I do not like sport']
for s in set(allsports) - set(Student.sports):
    print s, 0

希望这能给您一些有关python序列功能的想法。;）

编辑2，尽可能缩短…只是为了炫耀：P

女士们，先生们，7（.5）行。

allsports = ['Basketball','Football','Other','Baseball','Handball',
             'Soccer','Volleyball','I do not like sport']
sports = []
reader = csv.reader(open('copy-john.csv'))
for row in reader:
    if reader.line_num: sports.append(s[3])
    print "%-14s|%-10s|%-5s|%-11s" % tuple(s)
for s in allsports: print s, sports.count(s)