python-2.7 - 如何删除元素并更改python中的特定元素？

Question

我正在编写一个 Python 程序来管理 FreeRadius 用户帐户。我可以在我的程序中添加新用户，但在输入目标用户的用户名和密码后无法删除用户。另外，我无法更改用户的密码。

我应该如何更改我的编码以删除用户并提供密码更改功能？

#!usr/bin/python
from Tkinter import *
import ttk
import os
import subprocess
import commands

main = Tk()

main.title("FreeRadius Windows Administration Controller GUI")
main.geometry('1280x800')

rows = 0
while rows < 50:
     main.rowconfigure(rows, weight=1)
     main.columnconfigure(rows, weight=1)
rows += 1

def startlog():
f = open('C:/FreeRADIUS.net/var/log/radius/radius.log', 'r')
file_contents = f.read()
txtarea_output.insert(INSERT, file_contents)
print (file_contents)
f.close()

def resetlog():
txtarea_output.delete(1.0,END)

def adduser():
fh = open('C:/FreeRADIUS.net/etc/raddb/users.conf', 'a')
fh.write("\n")
fh.write(createuserentry.get() + "     " + "User-Password ==  " + '"' +   createuserpwd.get() + '"')
fh.close()

def deleteuser():
with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "r")
lines = fh.readlines()
with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "a")
for line in lines:
    if deleteuserentry.get() in line:
        continue
        fh.write(line)

def cpwd():
with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "r")
lines = fh.readlines()
with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "a")
for line in lines:
    if changeuserpwd.get() in line:
        continue
        fh.write(line)


nb = ttk.Notebook(main)
nb.grid(row=1, column=0, columnspan=40, rowspan=39, sticky='NESW')

page1 = ttk.Frame(nb)
nb.add(page1, text='User Account Management')
createuser = ttk.Label(page1, text="Create User").grid(column=0, row=0,     sticky='W')
createusername = ttk.Label(page1, text="Enter new user's   username:").grid(column=0, row=1, sticky='W')
createuserentry = ttk.Entry(page1)
createuserentry.grid(row=1, column=1, columnspan=2)
createuserpassword = ttk.Label(page1, text="Enter new user's password:").grid(column=0, row=2, sticky='W')
createuserpwd = ttk.Entry(page1)
createuserpwd.grid(row=2, column=1, columnspan=2)
createuserconfirm = Button(page1, text='Create this User', borderwidth=2, command=adduser)
createuserconfirm.grid(row=3, column=0, sticky='W')


ttk.Label(page1, text="").grid(column=0, row=4, sticky='W')

deleteteuser = ttk.Label(page1, text="Delete User").grid(column=0, row=5, sticky='W')
deleteusername = ttk.Label(page1, text="Enter current user's username:").grid(column=0, row=6, sticky='W')
deleteuserentry = ttk.Entry(page1)
deleteuserentry.grid(row=6, column=1, columnspan=2)
deleteuserpassword = ttk.Label(page1, text="Enter current user's password:").grid(column=0, row=7, sticky='W')
deleteuserpwd = ttk.Entry(page1)
deleteuserpwd.grid(row=7, column=1, columnspan=2)
deleteuserconfirm = Button(page1, text='Deletete this User', borderwidth=2, command=deleteuser)
deleteuserconfirm.grid(row=8, column=0, sticky='W')

ttk.Label(page1, text="").grid(column=0, row=9, sticky='W')

changepwd = ttk.Label(page1, text="Change User's password").grid(column=0, row=10, sticky='W')
changepwdusername = ttk.Label(page1, text="Enter user's username:").grid(column=0, row=11, sticky='W')
changepwduserentry = ttk.Entry(page1)
changepwduserentry.grid(row=11, column=1, columnspan=2)
changepwduserpassword = ttk.Label(page1, text="Enter user's current password:").grid(column=0, row=12, sticky='W')
changepwduserpwd = ttk.Entry(page1)
changepwduserpwd.grid(row=12, column=1, columnspan=2)
changepwdusernewpwd = ttk.Label(page1, text="Enter user's new password:").grid(column=0, row=13, sticky='W')
changepwdusernewpwd = ttk.Entry(page1)
changepwdusernewpwd.grid(row=13, column=1, columnspan=2)
changepwduserconfirm = Button(page1, text='Change Password',   borderwidth=2, command = cpwd)
changepwduserconfirm.grid(row=14, column=0, sticky='W')

预期输出：

1. 用户被删除
2. 用户密码已更改

实际输出：无效语法

标签： python-2.7tkinter

Answer 1

您的代码存在以下语法问题：

• 没有适当的缩进。当您在问题中发布代码时，它们可能已被删除。无论如何，检查它们；
• 你的with陈述缺失as fh和:结束

此外还有其他问题：

• 删除或更改配置文件时，您应该打开它以写入，而不是附加，因为您将重新创建它。所以参数应该是w;
• 可能存在错误的删除或更改，因为您检查了整个配置行的用户名或密码，而不是解析它并检查确切的字段。如果某个用户的密码与另一个用户的名称相同，那么当您删除另一个用户时，您将同时删除这两个用户。这部分代码我没有修复，留给你

未经测试的更正代码如下：

---

#!usr/bin/python
from Tkinter import *
import ttk
import os
import subprocess
import commands

main = Tk()

main.title("FreeRadius Windows Administration Controller GUI")
main.geometry('1280x800')

rows = 0
while rows < 50:
    main.rowconfigure(rows, weight=1)
    main.columnconfigure(rows, weight=1)
    rows += 1

def startlog():
    f = open('C:/FreeRADIUS.net/var/log/radius/radius.log', 'r')
    file_contents = f.read()
    txtarea_output.insert(INSERT, file_contents)
    print (file_contents)
    f.close()

def resetlog():
    txtarea_output.delete(1.0,END)

def adduser():
    fh = open('C:/FreeRADIUS.net/etc/raddb/users.conf', 'a')
    fh.write("\n")
    fh.write(createuserentry.get() + "     " + "User-Password ==  " + '"' +   createuserpwd.get() + '"')
    fh.close()

def deleteuser():
    with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "r") as fh:
        lines = fh.readlines()
    with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "w") as fh:
        for line in lines:
            if deleteuserentry.get() in line: continue
            fh.write(line)

def cpwd():
    with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "r") as fh:
        lines = fh.readlines()
    with open('C:/FreeRADIUS.net/etc/raddb/users.conf', "w") as fh:
        for line in lines:
            if changeuserpwd.get() in line:
                fh.write(changepwduserentry.get() + "     " + "User-Password ==  " + '"' +   changepwdusernewpwd.get() + '"')
            else:
                fh.write(line)

nb = ttk.Notebook(main)
nb.grid(row=1, column=0, columnspan=40, rowspan=39, sticky='NESW')

page1 = ttk.Frame(nb)
nb.add(page1, text='User Account Management')
createuser = ttk.Label(page1, text="Create User").grid(column=0, row=0,     sticky='W')
createusername = ttk.Label(page1, text="Enter new user's   username:").grid(column=0, row=1, sticky='W')
createuserentry = ttk.Entry(page1)
createuserentry.grid(row=1, column=1, columnspan=2)
createuserpassword = ttk.Label(page1, text="Enter new user's password:").grid(column=0, row=2, sticky='W')
createuserpwd = ttk.Entry(page1)
createuserpwd.grid(row=2, column=1, columnspan=2)
createuserconfirm = Button(page1, text='Create this User', borderwidth=2, command=adduser)
createuserconfirm.grid(row=3, column=0, sticky='W')

ttk.Label(page1, text="").grid(column=0, row=4, sticky='W')

deleteteuser = ttk.Label(page1, text="Delete User").grid(column=0, row=5, sticky='W')
deleteusername = ttk.Label(page1, text="Enter current user's username:").grid(column=0, row=6, sticky='W')
deleteuserentry = ttk.Entry(page1)
deleteuserentry.grid(row=6, column=1, columnspan=2)
deleteuserpassword = ttk.Label(page1, text="Enter current user's password:").grid(column=0, row=7, sticky='W')
deleteuserpwd = ttk.Entry(page1)
deleteuserpwd.grid(row=7, column=1, columnspan=2)
deleteuserconfirm = Button(page1, text='Deletete this User', borderwidth=2, command=deleteuser)
deleteuserconfirm.grid(row=8, column=0, sticky='W')

ttk.Label(page1, text="").grid(column=0, row=9, sticky='W')

changepwd = ttk.Label(page1, text="Change User's password").grid(column=0, row=10, sticky='W')
changepwdusername = ttk.Label(page1, text="Enter user's username:").grid(column=0, row=11, sticky='W')
changepwduserentry = ttk.Entry(page1)
changepwduserentry.grid(row=11, column=1, columnspan=2)
changepwduserpassword = ttk.Label(page1, text="Enter user's current password:").grid(column=0, row=12, sticky='W')
changepwduserpwd = ttk.Entry(page1)
changepwduserpwd.grid(row=12, column=1, columnspan=2)
changepwdusernewpwd = ttk.Label(page1, text="Enter user's new password:").grid(column=0, row=13, sticky='W')
changepwdusernewpwd = ttk.Entry(page1)
changepwdusernewpwd.grid(row=13, column=1, columnspan=2)
changepwduserconfirm = Button(page1, text='Change Password',   borderwidth=2, command = cpwd)
changepwduserconfirm.grid(row=14, column=0, sticky='W')