当用户输入no时，我正试图突破外部while循环(大写；我使用上限函数(。当前当用户输入一个"；否"；while循环再次运行，如果您输入"while"；否"；然后while循环再次退出。
该问题与课程类有关；主程序"；。为了解决这个问题，我创建了一个单独的"；主程序"；初始化Course类。
我对为什么会发生这种情况感到困惑，并想知道是否可以提供一些澄清。
在Python 3.8.6 上运行
class Course(object):
# init method or constructor that creates a Course object
def __init__(self, name, number, section, term_year, students):
self.name = name
self.number = number
self.section = section
self.term_year = term_year
self.students = students
#methods to edit specific course object attributes:
#edit the course name
def edit_name(self, name):
self.name = name
#edit the course number
def edit_number(self, number):
self.number = number
#edit the course section
def edit_section(self, section):
self.section = section
#edit the course term and year
def edit_term_year(self, term_year):
self.term_year = term_year
#edit the course number of students
def edit_students(self, students):
self.students = students
#methods to display the course object attributes
#display all attributes
def display_course(self):
return( self.name+" "+ self.number + " " + self.section + " " +self.term_year+ " " + str(self.students))
#display the course name
def display_course_name(self):
return( self.name)
#display the course number
def display_course_number(self):
return( self.number)
#display the course section
def display_course_section(self):
return( self.section)
#display the course term and year
def display_course_term_year(self):
return( self.term_year)
#display the number of students
def display_course_students(self):
return( self.students)
#function to delete the course object
def delete_course(self):
del self
from Course import Course
Courses = []
loop = True
while loop:
print(loop)
#store the number of courses the user would like to add
number = int(input("How many courses would you like to add? "))
#iterate through the number of courses the user would like to enter
if number > 0:
for x in range(number):
print(x)
#store user input for each course
name = input("Enter course name: ")
number = input("Enter course number: ")
section = input("Enter course section: ")
term_year = input("Enter course term and year: ")
students = input("Enter number of student for course: ")
print("n")
#store each course into an array
Courses.append([name,number,section,term_year,students])
answer = input("Would you like to add anymore courses?").upper()
print(answer)
while True:
if answer in ('YES','NO'):
break
else:
answer = input('Incorrect option. Type "YES" to add more courses or "NO" to continue": ').upper()
if answer == 'NO':
loop = False
break
print(loop)
print(Courses)
当前输出如下：
True
How many courses would you like to add? 0
Would you like to add anymore courses?no
NO
[]
True
How many courses would you like to add? 0
Would you like to add anymore courses?no
NO
[]
在复制粘贴您的代码并使用类似的python版本后，我无法重现您的问题。
与@balderman提到的类似，你在哪里打印了一个空列表？我想你的答案中少了几行代码。
$ python test.py
True
How many courses would you like to add? 0
Would you like to add anymore courses?NO
NO