如何将现有变量传递到调用的pyqt5 ui文件中?

Question

我使用PyQt5作为我的接口。我想从我的主程序中导入link变量到GUI程序这样它就可以显示从主程序获取的链接.

我希望它是这样工作的:

链接被获取——>Link被放入一个变量——>链接被传递到GUI文件中——>GUI在GUI中显示图像链接。

我的代码的简化版本:

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
driver.close()
driver = webdriver.Chrome(executable_path=r"C:UsersameteDocumentschromedriver.exe")
driver.get("https://myanimelist.net/search/all?q=one%20piece&cat=all")
search = driver.find_element_by_xpath('//input[@name="q"]')
wait = WebDriverWait(driver, 20)
wait.until(EC.element_to_be_clickable((By.XPATH, '//input[@name="q"]')))
#  Clears the field
search.send_keys(Keys.CONTROL, 'a')
search.send_keys(Keys.DELETE)
#  The field is now cleared and the program can type whatever it wants
search.send_keys(Anime)
search.send_keys(Keys.RETURN)
#  Accept the cookies
wait.until(EC.element_to_be_clickable((By.XPATH, '//*[@id="qc-cmp2-ui"]/div[2]/div/button[3]'))).click()
#  Added this wait
wait.until(EC.element_to_be_clickable((By.XPATH,'//h2[@id="anime"]//ancestor::div[@class="content-left"]//article[1]/div[contains(@class, "list")][1]/div[contains(@class, "information")]/a[1]')))
wait.until(EC.element_to_be_clickable((By.XPATH,'/html/body/div[2]/div[2]/div[3]/div[2]/div[2]/div[1]/div/article[1]/div[1]/div[2]/a[1]'))).click()

#Grabs the link of the picture
piclink = driver.find_element_by_xpath('/html/body/div[2]/div[2]/div[3]/div[2]/table/tbody/tr/td[1]/div/div[1]/a/img').get_attribute('src')
print (piclink)

。UI代码

import sys
import requests
from PyQt5.QtWidgets import QApplication, QWidget, QLabel
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QImage, QPixmap

class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(537, 402)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(10, 0, 221, 291))
Image = QImage()
Image.loadFromData(requests.get(piclink).content)
self.label.setText("")
self.label.setPixmap(QtGui.QPixmap(Image))
self.label.setObjectName("label")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(240, 190, 131, 41))
self.pushButton.setObjectName("pushButton")
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setGeometry(QtCore.QRect(390, 190, 131, 41))
self.pushButton_2.setObjectName("pushButton_2")
self.label_2 = QtWidgets.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(240, 10, 281, 61))
font = QtGui.QFont()
font.setPointSize(20)
self.label_2.setFont(font)
self.label_2.setObjectName("label_2")
self.label_3 = QtWidgets.QLabel(self.centralwidget)
self.label_3.setGeometry(QtCore.QRect(290, 90, 161, 41))
font = QtGui.QFont()
font.setPointSize(22)
self.label_3.setFont(font)
self.label_3.setObjectName("label_3")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 537, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)

self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)

def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "Yes"))
self.pushButton_2.setText(_translate("MainWindow", "No"))
self.label_2.setText(_translate("MainWindow", "Is this the right anime?"))
self.label_3.setText(_translate("MainWindow",str(Titles)))


if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())

我需要传递"URlink"变量放入用户界面文件

Answer 1

问题是您没有模块化您的项目，逻辑是创建实现必要逻辑的函数或类，并且是独立的，之后将它们连接起来，以便函数和对象相互作用。另一方面，不要修改由pyuic生成的代码，而是创建另一个类，从合适的QWidget继承并填充它们。

在这种情况下，您必须在另一个线程中执行抓取和下载任务，因为它们消耗大量时间，并将信息发送给主线程。

综上所述，解决方案为:

import threading
from PyQt5.QtCore import QObject, pyqtSignal
from PyQt5.QtGui import QImage, QPixmap
from PyQt5.QtWidgets import QApplication, QMainWindow
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import requests
from gui import Ui_MainWindow

def find_link(anime):
# ...
piclink = driver.find_element_by_xpath('/html/body/div[2]/div[2]/div[3]/div[2]/table/tbody/tr/td[1]/div/div[1]/a/img').get_attribute('src')
return piclink

def download_image(link):
image = QImage()
image.loadFromData(requests.get(link).content)
return image

class AnimeManager(QObject):
finished = pyqtSignal(QImage)
def start(self, anime):
threading.Thread(target=self._do_work, args=(anime,), daemon=True).start()
def _do_work(self, anime):
link = find_link(anime)
image = download_image(link)
self.finished.emit(image)

class MainWindow(QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.anime_manager = AnimeManager()
self.anime_manager.finished.connect(self.handle_finished)
self.anime_manager.start("Pokemon")
def handle_finished(self, image):
pixmap = QPixmap.fromImage(image)
self.ui.label.setPixmap(pixmap)

if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())

注意:恢复Ui_MainWindow类。