pyqt5 构建一个删除电脑凭据的gui程序

# _*_ coding: utf-8 _*_
__author__ = 'pythonwu'
__date__ = "2018/12/25 12:28"

import subprocess
import json
import sys
from PyQt5.QtWidgets import QApplication,QWidget,QLineEdit,QLabel,QTextEdit,QPushButton,QPlainTextEdit
from PyQt5.QtGui import QIcon
from PyQt5 import QtGui,QtCore


info = 'target='
cmdconsole = []
def popen(cmd):
    try:
        popen = subprocess.Popen(cmd,stdout=subprocess.PIPE)
        popen.wait()
        lines = popen.stdout.readlines()
        return [line.decode('gbk') for line in lines]
    except BaseException as e:
        return -1


cmdpress = popen('cmdkey /list')
# print(cmdpress)
cmdformate = []

for i in range(len(cmdpress)-1,-1,-1):
    if cmdpress[i] == '
':
        cmdpress.remove('
')
        for j in cmdpress:
            # print(j)
            j.strip()
            cmdformate.append(j.strip())

# print(cmdformate)
for i in range(len(cmdformate)-1,-1,-1):
    if cmdformate[i] == '':
        cmdformate.remove('')
print(cmdformate)

for i in cmdformate:
    if i.find(info)== -1:
        pass
    else:
        cmdconsole.append(i[i.find(info)+7:])
print(cmdconsole)
cmdstr = str()
for i in cmdconsole:
    cmdstr +=i+'
'

class Example(QWidget):

    def __init__(self):
        super(Example, self).__init__()
        # self.setWindowFlags(QtCore.Qt.WindowMinimizeButtonHint)
        self.setWindowFlags(QtCore.Qt.WindowCloseButtonHint)
        self.initUI()


    def initUI(self):

        self.lbl = QLabel(self)
        labelEnd = QLabel(self)
        qle = QPlainTextEdit(self)
        btAdd = QPushButton('添加',self)
        btDelOne = QPushButton('删除',self)
        btDelAll = QPushButton('清空',self)
        btBackup = QPushButton('备份',self)
        btReback = QPushButton('还原',self)
        btClose = QPushButton('关闭',self)

        qle.move(18,80)
        qle.resize(319,224)
        qle.setPlainText(cmdstr)
        qle.setReadOnly(True)
        qle.setMouseTracking(True)

        btAdd.move(350,80)
        btDelOne.move(350,120)
        btDelAll.move(350,160)
        btBackup.move(18,470)
        btReback.move(200,470)
        btClose.move(350,470)

        labelEnd.move(18,358)
        labelEnd.setText('使用说明：

添加：新增凭据 
删除：单个删除
清空:删除所有凭据
')
        self.lbl.move(18,29)
        self.lbl.setText("Windows 可以存储服务器、网站和程序的登陆凭据。当重新访问其中任何一个
地方时，Windows将尝试让你自动登陆。")
        self.setStyleSheet("QLabel{font-size:12px;font-weight:normal;font-family:Arial;}")
        self.resize(456,512)
        self.setWindowTitle('存储的用户名和密码')

        self.show()




if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())

# for i in cmdpress:
#     i.lstrip()
#     cmdformate.extend(i)
# print(cmdformate)


# c = ['1','3','5','5']
# for i in range(len(c)-1,-1,-1):
#     if c[i] == '1':
#         c.pop(i)
# print(c)

# i = []
# c = [' 1 222 2 ','3','5','5']
# for l in c:
#     l.strip()
# print(i)


效果图：

代码草稿，看情况放重写后的代码