我对Python还比较陌生。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，所以让我们看下面的代码，我可以随时提取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
#
'''
但是我卡在了将我的CSV数据加载到键和值中。
[1] 我想创建自己的键，例如：worker1 = ageName([name],[age],[id],[gender])
[2] 每个[name]、[age]、[id]和[gender]都来自于CSV数据文件中特定的某一列。
我真的不知道如何处理这个问题。我尝试了很多方法，但都失败了。我需要一些帮助来开始解决这个问题。
---- 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()
这是我的当前代码（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)
worker1.name来获取这些值。必须使用worker1['name']形式来访问字典。那么，您真正想要哪一个呢？ - Peter Hansen