列出并读取文件逗号分隔的元素

Question

这是我的密码

#course registration
list_courses=[]
for line in open("courses.txt",'r').readlines():
    list_courses.append(line.strip())
print ("Gathering course information from file: \n",list_courses)
close("courses.txt")
list_student=[]
for line in open("students.txt",'r').readlines():
    list_student.append(line.strip())
print("Here is student info: \n",list_student)
close("students.txt")

当我试图关闭文件时，这会给我带来错误。如何结束，我基本上是读取文件的内容，并将它们存储在一个列表中。现在，稍后要关闭打开的files.There，我得到了错误。

我按照下面的建议编辑了代码。新代码是

list_courses=[]
with open("courses.txt",'r') as myfile1:
      list_courses=myfile1.readlines()
      list_courses=[x.strip() for x in list_courses]

print ("Gathering course information from file: \n",list_courses)

list_student=[]
with open("students.txt",'r') as myfile1:
      list_student=myfile1.readlines()
      list_student=[x.strip() for x in list_student]

print("Here is student info: \n",list_student)

courses.txt中的信息是

cs101,C programming
cs102,Digital logic and design
cs103,Electrical engineering
cs231,IT networks
cs232,IT Workshop
cs233,IT programming
cs301,Compilers and automata
cs302,Operating Systems
cs303,Networks
cs401,Game Theory
cs402,Systems Programming
cs403,Automata
ec101,Digitization
ec102,Analog cicuit design
ec103,IP Telephony
ec201,Wireless Network
ec202,Microwave engineering
ec203,Antenna
ec301,Maths2
ec302,Theory of Circuits
ec303,PCB design
ec401,PLC programming
ec402,Scada
ec403,VLSI

当我运行代码时，我得到输出。

Gathering course information from file: 

     ['cs101,C programming', 'cs102,Digital logic and design', 'cs103,Electrical engineering', 'cs231,IT networks', 'cs232,IT Workshop', 'cs233,IT programming', 'cs301,Compilers and automata', 'cs302,Operating Systems', 'cs303,Networks', 'cs401,Game Theory', 'cs402,Systems Programming', 'cs403,Automata', 'ec101,Digitization', 'ec102,Analog cicuit design', 'ec103,IP Telephony', 'ec201,Wireless Network', 'ec202,Microwave engineering', 'ec203,Antenna', 'ec301,Maths2', 'ec302,Theory of Circuits', 'ec303,PCB design', 'ec401,PLC programming', 'ec402,Scada', 'ec403,VLSI']

而不是我想要的是从courses.txt的第一行输入list_courses和list_courses1来进行c++编程，即list_courses=cs101 list_courses1=C编程。

因此，我尝试了一些方法，其中programe取了一行，并将存储在该行中的行作为list元素进行读取，但是在courses.txt中有一个逗号分隔了两个元素，逗号分隔的值应该是单独的列表元素。

Answer 1

这对你是有用的：

students=[]
subject=[]
with open("students.txt","r") as f:
    for line in f.readlines():
        eachl=line.split(",")
        students.append(eachl[0])
        subject.append(eachl[1][:-1])

你会得到两个名单，其中包含学生的名字和另一个科目：

学生名单如下：

['cs101', 'cs102', 'cs103', 'cs231', 'cs232', 'cs233', 'cs301', 'cs302', 'cs303', 'cs401', 'cs402', 'cs403', 'ec101', 'ec102', 'ec103', 'ec201', 'ec202', 'ec203', 'ec301', 'ec302', 'ec303', 'ec401', 'ec402', 'ec40`3]

主题列表如下：

['C programming', 'Digital logic and design', 'Electrical engineering', 'IT networks', 'IT Workshop', 'IT programming', 'Compilers and automata', 'Operating Systems', 'Networks', 'Game Theory', 'Systems Programming', 'Automata', 'Digitization', 'Analog cicuit design', 'IP Telephony', 'Wireless Network', 'Microwave engineering', 'Antenna', 'Maths2', 'Theory of Circuits', 'PCB design', 'PLC programming', 'Scada', 'VLSI']

Answer 2

你为什么不试试

students = []
courses = []

open(“courses.txt”, “r”) as f
for line in f.readlines()
    a, b = line.split(“,”)
    students.append(a)
    courses.append(b[:-1])
f.close()

这将产生两个名单学生和课程。