打印出 __str__() 函数以获取列表类型对象的位置
Issue printing out __str__() function for location of a list type object
当为 Manager() class 打印出 str() 函数时,员工列表打印出对象在内存中的位置,而不是在类型中(海峡)格式。经理的其余部分 str 打印出来很好,但我不知道如何打印员工列表。我现在只是使用 GUI 来测试代码的各个方面。
预先感谢您的宝贵时间。
Image of incorrect output on GUI
import random
from random import randint
from tkinter import *
import tkinter as tk
from tkinter import ttk
class Employees(object):
'''
'''
num_emps = 0
def __init__(self, first_name, last_name, pay, emp_id):
self.first_name = first_name
self.last_name = last_name
self.pay = pay
self.emp_id = self.IdMaker()
Employees.num_emps += 1
def get_first_name(self): #Retrieves First Name
return self.first_name
def get_last_name(self): #Retrieves Last Name
return self.last_name
def get_full_name(self): #Retrieves Full Name
return '{} {}'.format(self.first_name, self.last_name)
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name}'.format(self=self)
#####---ID CLASS---#####
class IdMaker():
'''
'''
def __init__(self):
self.emp_id = 'emp_' + ''.join(str(random.randint(0, 9)) for x in range(12))
self.food_id = 'food_' + ''.join(str(random.randint(0, 9)) for x in range(12))
self.sanitation_id = 'sani_' + ''.join(str(random.randint(0, 9)) for x in range(12))
self.dinnerWare_id = 'dWare_' + ''.join(str(random.randint(0, 9)) for x in range(12))
def __str__(self):
if isinstance(self.emp_id, object):
return '{self.emp_id}'.format(self=self)
elif isinstance(self.food_id, object):
return 'food_{self.food_id}'.format(self=self)
elif isinstance(self.sanitation_id, object):
return 'sani_{self.sanitation_id}'.format(self=self)
elif isinstance(self.dinnerWare_id, object):
return 'sani_{self.dinnerWare_id}'.format(self=self)
else:
print('No such object')
#-----------------------------------------------------------------------------
class Manager(Employees):
def __init__(self, first_name, last_name, pay, emp_id, employees=None):
super().__init__(first_name, last_name, pay, emp_id)
# if schedule is None: #Schedule
# self.schedule = {}
# else:
# self.schedule = schedule
if employees is None: #Employees working for Manager
self.employees = []
else:
self.employees = employees
def add_emp(self, emp):
if emp not in self.employees:
self.employees.append(emp)
def remove_emp(self, emp):
if emp in self.employees:
self.employees.remove(emp)
def print_emps(self):
for emp in self.employees:
print(emp.get_full_name())
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay} - {self.employees}'.format(self=self)
class FOH(Manager):
def __init__(self, first_name, last_name, pay, emp_id):
Employees.__init__(self, first_name, last_name, pay, emp_id)
self.pay = pay
# if schedule is None: #Schedule
# self.schedule = {}
# else:
# self.schedule = schedule
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay}'.format(self=self)
class BOH(Manager):
def __init__(self, first_name, last_name, pay, emp_id):
Employees.__init__(self, first_name, last_name, pay, emp_id)
self.pay = pay
# if schedule is None: #Schedule
# self.schedule = {}
# else:
# self.schedule = schedule
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay}'.format(self=self)
foh_1 = FOH('Rebecca', 'Peters', 60000, None)
foh_2 = FOH('Becca', 'Peters', 60000, None)
boh_3 = BOH('Beckles', 'Peters', 60000, None)
mgr_1 = Manager('Sean', 'Sheaffer', 90000, None, [foh_1, foh_2, boh_3])
# mgr_1.add_emp([foh_2])
# mgr_1.add_emp([boh_3])
mgr_2 = Manager('Becky', 'Peters', 100000, None, [boh_3])
mgr_2.print_emps()
mgr_1.print_emps()
#####---GUI CLASS---#####
root = Tk()
root.title('DigiSous')
root.geometry("600x200")
# Creates tab control
tabControl = ttk.Notebook(root)
class GUI(Manager):
def __init__(self, master, first_name, last_name, pay, emp_id):
super().__init__(first_name, last_name, pay, emp_id)
my_frame = Frame(master)
my_frame.pack()
#Find Employees working for Manager
self.find_mgr_emps = Button(master, text="Employees", command=self.manager_emps)
self.find_mgr_emps.pack(pady=20)
self.find_mgr_emps_Entry = Entry(master, width=90, borderwidth=5)
self.find_mgr_emps_Entry.pack(pady=10)
def manager_emps(self):
self.find_mgr_emps_Entry.delete(0, END)
mgr_emps = mgr_1
self.find_mgr_emps_Entry.insert(0, mgr_emps)
#-----------------------------------------------------------------------------
e = GUI(root, None, None, None, None)
root.mainloop()
每当您打印列表时,您将看到这些对象的 __repr__
而不是 __str__
,因此一种方法可能是重写 __repr__
方法以获得您想要的输出,例如:
def __repr__(self):
return str(self)
另一种方法是在按如下方式格式化字符串时使用列表推导式:
class Manager(Employees):
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay} - {[str(x) for x in self.employees]}'.format(self=self)
当为 Manager() class 打印出 str() 函数时,员工列表打印出对象在内存中的位置,而不是在类型中(海峡)格式。经理的其余部分 str 打印出来很好,但我不知道如何打印员工列表。我现在只是使用 GUI 来测试代码的各个方面。
预先感谢您的宝贵时间。
Image of incorrect output on GUI
import random
from random import randint
from tkinter import *
import tkinter as tk
from tkinter import ttk
class Employees(object):
'''
'''
num_emps = 0
def __init__(self, first_name, last_name, pay, emp_id):
self.first_name = first_name
self.last_name = last_name
self.pay = pay
self.emp_id = self.IdMaker()
Employees.num_emps += 1
def get_first_name(self): #Retrieves First Name
return self.first_name
def get_last_name(self): #Retrieves Last Name
return self.last_name
def get_full_name(self): #Retrieves Full Name
return '{} {}'.format(self.first_name, self.last_name)
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name}'.format(self=self)
#####---ID CLASS---#####
class IdMaker():
'''
'''
def __init__(self):
self.emp_id = 'emp_' + ''.join(str(random.randint(0, 9)) for x in range(12))
self.food_id = 'food_' + ''.join(str(random.randint(0, 9)) for x in range(12))
self.sanitation_id = 'sani_' + ''.join(str(random.randint(0, 9)) for x in range(12))
self.dinnerWare_id = 'dWare_' + ''.join(str(random.randint(0, 9)) for x in range(12))
def __str__(self):
if isinstance(self.emp_id, object):
return '{self.emp_id}'.format(self=self)
elif isinstance(self.food_id, object):
return 'food_{self.food_id}'.format(self=self)
elif isinstance(self.sanitation_id, object):
return 'sani_{self.sanitation_id}'.format(self=self)
elif isinstance(self.dinnerWare_id, object):
return 'sani_{self.dinnerWare_id}'.format(self=self)
else:
print('No such object')
#-----------------------------------------------------------------------------
class Manager(Employees):
def __init__(self, first_name, last_name, pay, emp_id, employees=None):
super().__init__(first_name, last_name, pay, emp_id)
# if schedule is None: #Schedule
# self.schedule = {}
# else:
# self.schedule = schedule
if employees is None: #Employees working for Manager
self.employees = []
else:
self.employees = employees
def add_emp(self, emp):
if emp not in self.employees:
self.employees.append(emp)
def remove_emp(self, emp):
if emp in self.employees:
self.employees.remove(emp)
def print_emps(self):
for emp in self.employees:
print(emp.get_full_name())
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay} - {self.employees}'.format(self=self)
class FOH(Manager):
def __init__(self, first_name, last_name, pay, emp_id):
Employees.__init__(self, first_name, last_name, pay, emp_id)
self.pay = pay
# if schedule is None: #Schedule
# self.schedule = {}
# else:
# self.schedule = schedule
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay}'.format(self=self)
class BOH(Manager):
def __init__(self, first_name, last_name, pay, emp_id):
Employees.__init__(self, first_name, last_name, pay, emp_id)
self.pay = pay
# if schedule is None: #Schedule
# self.schedule = {}
# else:
# self.schedule = schedule
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay}'.format(self=self)
foh_1 = FOH('Rebecca', 'Peters', 60000, None)
foh_2 = FOH('Becca', 'Peters', 60000, None)
boh_3 = BOH('Beckles', 'Peters', 60000, None)
mgr_1 = Manager('Sean', 'Sheaffer', 90000, None, [foh_1, foh_2, boh_3])
# mgr_1.add_emp([foh_2])
# mgr_1.add_emp([boh_3])
mgr_2 = Manager('Becky', 'Peters', 100000, None, [boh_3])
mgr_2.print_emps()
mgr_1.print_emps()
#####---GUI CLASS---#####
root = Tk()
root.title('DigiSous')
root.geometry("600x200")
# Creates tab control
tabControl = ttk.Notebook(root)
class GUI(Manager):
def __init__(self, master, first_name, last_name, pay, emp_id):
super().__init__(first_name, last_name, pay, emp_id)
my_frame = Frame(master)
my_frame.pack()
#Find Employees working for Manager
self.find_mgr_emps = Button(master, text="Employees", command=self.manager_emps)
self.find_mgr_emps.pack(pady=20)
self.find_mgr_emps_Entry = Entry(master, width=90, borderwidth=5)
self.find_mgr_emps_Entry.pack(pady=10)
def manager_emps(self):
self.find_mgr_emps_Entry.delete(0, END)
mgr_emps = mgr_1
self.find_mgr_emps_Entry.insert(0, mgr_emps)
#-----------------------------------------------------------------------------
e = GUI(root, None, None, None, None)
root.mainloop()
每当您打印列表时,您将看到这些对象的 __repr__
而不是 __str__
,因此一种方法可能是重写 __repr__
方法以获得您想要的输出,例如:
def __repr__(self):
return str(self)
另一种方法是在按如下方式格式化字符串时使用列表推导式:
class Manager(Employees):
def __str__(self):
return '{self.emp_id}: {self.first_name} {self.last_name} |Pay - ${self.pay} - {[str(x) for x in self.employees]}'.format(self=self)