我学Java的时候也用Swing做了一个文件搜索的小程序,但界面真的挺丑的,现在学了点python,感觉python是最简单的语言,没有之一。 (大家没事都可以来学的,真的很简单有趣哦)
我采用的是pyqt5,所以需要先安装Pyqt5模块
直接cmd命令输入
1
|
pip install pyqt5
|
闲言少叙,上代码!!
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
# -*- coding: utf-8 -*-
# @Time : 2018\9\15 20:39
# @Author : Tang weiyang
# @File : FileSearch02.py
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import QIcon
import sys
import os
import threading
class fileSearchThread(QThread):
sinOut = pyqtSignal( str )
# 自定义信号,执行run()函数时,从相关线程发射此信号
def __init__( self ,key):
super ().__init__()
self .key = key
def run( self ):
threads = []
path = [r "c:\\", r" d:\\ ", r" e:\\ ", r" f:\\"]
#通过多线程对windows下的多个盘符进行文件的遍历查找
for each in path:
t = threading.Thread(target = self .search, args = ( self .key,each,))
threads.append(t)
t.start()
for i in range ( len (threads)): #将主线程阻塞
threads[i].join()
print ( "搜索结束" )
def search( self ,keyword, path):
for dirpath, dirnames, filenames in os.walk(path):
for filename in filenames:
if filename.__contains__(keyword):
print (os.path.join(dirpath, filename))
self .sinOut.emit(os.path.join(dirpath, filename))
for folder in dirnames:
if folder.__contains__(keyword):
print (os.path.join(dirpath,folder))
self .sinOut.emit(os.path.join(dirpath,folder))
class fileSearch(QListWidget):
def __init__( self ):
super ().__init__()
self .Ui()
def Ui( self ):
self .key = QLineEdit()
self .bt = QPushButton( "搜索" )
self .result = QListWidget()
self .bt.clicked.connect( self .ButtonClicked) #按钮单击信号绑定到槽
# self.line.editingFinished.connect(self.Action)
self .key.editingFinished.connect( self .ButtonClicked)
grid = QGridLayout()
grid.setSpacing( 10 ) # 创建标签之间的空间
grid.addWidget( self .key, 1 , 0 ) # (1,0)表示显示的位置
grid.addWidget( self .bt, 1 , 1 )
grid.addWidget( self .result, 2 , 0 , 5 , 2 ) # 指定组件的跨行和跨列的大小,指定这个元素跨5行显示
self .setLayout(grid)
for i in range ( 1 , 100 ):
self .result.addItem( "搜索" + str (i) + "个项目" )
self .result.itemClicked.connect( self .Clicked)
self .setGeometry( 300 , 300 , 500 , 500 )
self .setWindowTitle( '文件搜索' )
self .setWindowIcon(QIcon( 'icon.jpg' ))
self .show()
def Clicked( self , item):
QMessageBox.information( self , "ListWidget" , "You clicked: " + item.text())
os.startfile(item.text()) #打开文件
def ButtonClicked( self ):
# 创建新线程,将自定义信号sinOut连接到slotAdd()槽函数
keyword = self .key.text()
self .result.clear()
self .thread = fileSearchThread(keyword)
self .thread.sinOut.connect( self .slotAdd)
self .thread.start()
def slotAdd( self ,filename):
self .result.addItem( str (filename))
if __name__ = = '__main__' :
app = QApplication(sys.argv)
ex = fileSearch()
sys.exit(app.exec_())
|
这个小程序可以搜索本地所有的文件,时间大概在10秒左右,点击文件的地址,就可以打开这个文件.多线程这个有点卡壳,然后写的很变扭.
这个小程序还有一个小感悟:
涉及到GUI的程序最好要将UI界面和数据处理(还包括大批量文件的读取,循环计算),否则会导致UI界面无响应,这一点可以参考我的代码,通过一个多线程很好解决这个问题
线程之间的信息传递,可以通过信号和槽完成,
1
2
3
|
sinOut = pyqtSignal( str ) #自定义一个信号槽
self .thread.sinOut.connect( self .slotAdd) #信号绑定到槽
self .sinOut.emit(os.path.join(dirpath,folder)) #发射信号
|
pyqt的布局真的很好用,GridLayout真的超级好用
效果图如下
补充:pyqt5多线程-简单例子
一、主要代码逻辑
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
from PyQt5 import QtWidgets, QtCore
from testqt.TEST_QT_FROM import Ui_Dialog
import sys
from PyQt5.QtCore import *
import time
# 继承QThread
class Runthread(QtCore.QThread):
# python3,pyqt5与之前的版本有些不一样
# 通过类成员对象定义信号对象
_signal = pyqtSignal( str )
def __init__( self ):
super (Runthread, self ).__init__()
def __del__( self ):
self .wait()
def run( self ):
print ( "run 666" )
self ._signal.emit( "run 666" ); # 信号发送
class TestQtFromC(QtWidgets.QWidget, Ui_Dialog):
text = ""
def __init__( self ):
super (TestQtFromC, self ).__init__()
self .setupUi( self )
#click
def timer_click( self ):
self .thread = Runthread() # 创建线程
self .thread._signal.connect( self .callbacklog) # 连接信号
self .thread.start() # 开始线程
# callback
def callbacklog( self , msg):
self .text = self .text + time.strftime( "%Y-%m-%d %H:%M:%S " , time.localtime()) + msg + "\n"
print ( self .text)
# 回调数据输出到文本框
self .textEdit.setText( self .text);
if __name__ = = "__main__" :
app = QtWidgets.QApplication(sys.argv)
mTestQtFromC = TestQtFromC()
mTestQtFromC.show()
sys.exit(app.exec_())
|
以上为个人经验,希望能给大家一个参考,也希望大家多多支持服务器之家。如有错误或未考虑完全的地方,望不吝赐教。
原文链接:https://blog.csdn.net/weiyang_tang/article/details/82748111