python+pyqt5编写md5生成器

本文实例为大家分享了python+pyqt5编写md5生成器的具体代码，供大家参考，具体内容如下

学了一下pyqt5，写一个小程序来实践一下。

下图是程序界面：

下面是代码：

import hashlib, os, sys

from PyQt5.QtGui import QFont, QIcon
from PyQt5.QtWidgets import (QFileDialog,
QGridLayout, QLineEdit, QTextEdit,QLabel, QWidget, QToolTip,
QPushButton, QApplication)
from PyQt5.QtCore import QCoreApplication

#小文件的处理函数
def get_md5_small(file_path):
md5 = None
if os.path.exists(file_path) and os.path.isfile(file_path):
 with open( file_path, 'rb' ) as f:
  md5_obj = hashlib.md5()
  md5_obj.update( f.read() )
  hash_code = md5_obj.hexdigest()

md5 = str(hash_code).lower()

return md5

#大文件的处理函数
def get_md5_big(file_path):
md5 = None
if os.path.exists(file_path) and os.path.isfile(file_path):
 with open( file_path, 'rb' ) as f:
  md5_obj = hashlib.md5()
  while True:
   d = f.read(8096)
   if not d:
    break
   md5_obj.update(d)
  hash_code = md5_obj.hexdigest()
  md5 = str( hash_code ).lower()

return md5

class MainBody(QWidget):
def __init__(self):
 super(MainBody, self).__init__()
 self.init()

def init(self):
 #布局
 grid = QGridLayout()
 self.setLayout(grid)
 grid.setSpacing(10)

#文件路径
 self.m_tedit = QTextEdit()
 self.m_tedit.setToolTip( u'可以拖拽文件到这里来' )
 grid.addWidget(self.m_tedit, 1, 0, 2, 3)

#四个按钮
 self.m_select_btn = QPushButton(u'选择文件')
 self.m_select_btn.clicked.connect( self.select_func )

self.m_generate_btn = QPushButton(u'生成')
 self.m_generate_btn.clicked.connect( self.generate_func )

self.m_clear_btn = QPushButton(u'清空')
 self.m_clear_btn.clicked.connect( self.clear_func )

self.m_copy_btn = QPushButton(u'复制')
 self.m_copy_btn.clicked.connect( self.copy_func )

grid.addWidget(self.m_select_btn, 3, 0)
 grid.addWidget(self.m_generate_btn, 3, 1)
 grid.addWidget(self.m_clear_btn, 3, 2)
 grid.addWidget(self.m_copy_btn, 5, 1)

#md5的输出区域
 self.m_output = QLineEdit()
 grid.addWidget(self.m_output, 4, 0, 1, 3)

self.setGeometry(300,300,300,200)
 self.setWindowTitle(u"md5生成器")
 self.setWindowIcon(QIcon('icon.png'))
 self.show()

#选择文件
def select_func(self):
 filename, ok = QFileDialog.getOpenFileName(self, "Open file", "C:/Users/Administrator/Desktop")
 print(os.path.getsize(filename))
 self.m_tedit.setText( filename )
 self.m_output.clear()

#生成md5按钮
def generate_func(self):
 path = self.m_tedit.toPlainText()
 if path.startswith( 'file:///' ):
  path = path[8:]

if os.path.exists(path) and os.path.isfile(path):
  #200M以上的当作大文件
  if os.path.getsize(path) >= 200*1024*1204:
   md5 = get_md5_big( path )
  else:
   md5 = get_md5_small( path )
  self.m_output.setText( md5 )

def clear_func(self):
 self.m_tedit.clear()
 self.m_output.clear()

#复制
def copy_func(self):
 clipboard = QApplication.clipboard()
 clipboard.setText( self.m_output.text() )

if __name__ == "__main__":
app = QApplication(sys.argv)
mb = MainBody()
sys.exit( app.exec_() )

最后用 pyinstaller 打包成 exe 文件

来源：https://blog.csdn.net/u012755940/article/details/78273819