动态更新标签/按钮文本
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【中文标题】动态更新标签/按钮文本【英文标题】：Update Labels/Button Texts dynamically 【发布时间】：2020-09-15 20:37:20 【问题描述】：我使用 PyQt 设计器创建了这个 .ui 文件，我通过第二个脚本调用它（它也有一些数据处理）我如何制作 QPushButton，即 Confirmed、Active、Recovered 和 Deaths（旁边的数字它只是一个占位符，我想将它们更新为从主脚本处理的数据）尝试将其转换为 .py 无法弄清楚。
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>COVID19_Updater</class>
<widget class="QMainWindow" name="COVID19_Updater">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>917</width>
<height>615</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgb(5, 25, 55);</string>
</property>
<widget class="QWidget" name="centralwidget">
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0">
<widget class="QFrame" name="frame">
<property name="maximumSize">
<size>
<width>16777215</width>
<height>16777215</height>
</size>
</property>
<property name="styleSheet">
<string notr="true">QFrame
background-color: rgb(5, 25, 55);
border-radius: 10px
</string>
</property>
<property name="frameShape">
<enum>QFrame::StyledPanel</enum>
</property>
<property name="frameShadow">
<enum>QFrame::Raised</enum>
</property>
<widget class="QLabel" name="Title">
<property name="geometry">
<rect>
<x>-10</x>
<y>20</y>
<width>921</width>
<height>61</height>
</rect>
</property>
<property name="font">
<font>
<family>Segoe UI</family>
<pointsize>25</pointsize>
</font>
</property>
<property name="styleSheet">
<string notr="true">color: rgb(3, 122, 245);
lable.adjustSize();</string>
</property>
<property name="text">
<string><strong>COVID-19</strong> <i>LIVE</i></string>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>
</property>
</widget>
<widget class="QLabel" name="Description">
<property name="geometry">
<rect>
<x>-10</x>
<y>70</y>
<width>921</width>
<height>61</height>
</rect>
</property>
<property name="font">
<font>
<family>Segoe UI</family>
<pointsize>10</pointsize>
</font>
</property>
<property name="styleSheet">
<string notr="true">color: rgb(190, 191, 196);</string>
</property>
<property name="text">
<string><html><head/><body><p>Realtime COVID-19 status of all Countries including <span style=" font-weight:600;">Indian</span> States and Districts</p></body></html></string>
</property>
<property name="textFormat">
<enum>Qt::MarkdownText</enum>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>
</property>
<property name="wordWrap">
<bool>true</bool>
</property>
</widget>
<widget class="QPushButton" name="CheckData">
<property name="geometry">
<rect>
<x>300</x>
<y>190</y>
<width>281</width>
<height>61</height>
</rect>
</property>
<property name="font">
<font>
<family>Segoe UI Emoji</family>
<pointsize>15</pointsize>
<weight>50</weight>
<bold>false</bold>
</font>
</property>
<property name="focusPolicy">
<enum>Qt::StrongFocus</enum>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgba(0, 122, 255,50);
color: rgb(3, 122, 245);
border-radius: 30px;
</string>
</property>
<property name="text">
<string>Check Live Data</string>
</property>
<property name="checkable">
<bool>false</bool>
</property>
</widget>
<widget class="QLabel" name="AuthorName">
<property name="geometry">
<rect>
<x>730</x>
<y>570</y>
<width>161</width>
<height>21</height>
</rect>
</property>
<property name="font">
<font>
<family>Segoe UI</family>
<pointsize>8</pointsize>
</font>
</property>
<property name="cursor">
<cursorShape>IBeamCursor</cursorShape>
</property>
<property name="styleSheet">
<string notr="true">color: rgba(190, 191, 196,95);</string>
</property>
<property name="text">
<string><html><head/><body><p>Created by: <span style=" font-style:italic;">Sumukh Jadhav</span></p></body></html></string>
</property>
<property name="textFormat">
<enum>Qt::MarkdownText</enum>
</property>
<property name="alignment">
<set>Qt::AlignBottom|Qt::AlignRight|Qt::AlignTrailing</set>
</property>
<property name="wordWrap">
<bool>true</bool>
</property>
<property name="textInteractionFlags">
<set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
</property>
</widget>
<widget class="QPushButton" name="UpdataData">
<property name="geometry">
<rect>
<x>300</x>
<y>290</y>
<width>281</width>
<height>61</height>
</rect>
</property>
<property name="font">
<font>
<family>Segoe UI Emoji</family>
<pointsize>15</pointsize>
<weight>50</weight>
<italic>false</italic>
<bold>false</bold>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="focusPolicy">
<enum>Qt::StrongFocus</enum>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgba(0, 122, 255,50);
color: rgb(3, 122, 245);
border-radius: 30px;
</string>
</property>
<property name="text">
<string>Update Status</string>
</property>
<property name="checkable">
<bool>false</bool>
</property>
</widget>
<widget class="QPushButton" name="Confirmed">
<property name="geometry">
<rect>
<x>20</x>
<y>460</y>
<width>201</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<family>Helvetica LT Std</family>
<pointsize>15</pointsize>
<weight>75</weight>
<italic>false</italic>
<bold>true</bold>
<underline>false</underline>
<strikeout>false</strikeout>
<kerning>true</kerning>
</font>
</property>
<property name="focusPolicy">
<enum>Qt::StrongFocus</enum>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="styleSheet">
<string notr="true">
background-color: rgba(112,108,195,50);
color: rgb(112,108,195);
</string>
</property>
<property name="text">
<string>Confirmed
2,94,59,649</string>
</property>
<property name="checkable">
<bool>false</bool>
</property>
</widget>
<widget class="QPushButton" name="Active">
<property name="geometry">
<rect>
<x>240</x>
<y>460</y>
<width>201</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<family>Helvetica LT Std</family>
<pointsize>15</pointsize>
<weight>75</weight>
<italic>false</italic>
<bold>true</bold>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="focusPolicy">
<enum>Qt::StrongFocus</enum>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="styleSheet">
<string notr="true">
background-color: rgba(238, 14, 63,50);
color: rgb(238, 14, 63);
</string>
</property>
<property name="text">
<string>Active
72,41,136</string>
</property>
<property name="checkable">
<bool>false</bool>
</property>
</widget>
<widget class="QPushButton" name="Recovered">
<property name="geometry">
<rect>
<x>460</x>
<y>460</y>
<width>201</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<family>Helvetica LT Std</family>
<pointsize>15</pointsize>
<weight>75</weight>
<italic>false</italic>
<bold>true</bold>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="focusPolicy">
<enum>Qt::StrongFocus</enum>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgba(46, 155, 80,50);
color: rgb(42, 160, 79);
</string>
</property>
<property name="text">
<string>Recovered
2,12,92,324</string>
</property>
<property name="checkable">
<bool>false</bool>
</property>
</widget>
<widget class="QPushButton" name="Deaths">
<property name="geometry">
<rect>
<x>680</x>
<y>460</y>
<width>201</width>
<height>81</height>
</rect>
</property>
<property name="font">
<font>
<family>Helvetica LT Std</family>
<pointsize>15</pointsize>
<weight>75</weight>
<italic>false</italic>
<bold>true</bold>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="focusPolicy">
<enum>Qt::StrongFocus</enum>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgba(110, 116, 128,50);
color: rgb(110, 114, 126);
</string>
</property>
<property name="text">
<string>Deaths
9,33,150</string>
</property>
<property name="checkable">
<bool>false</bool>
</property>
</widget>
<widget class="QPushButton" name="UpdataData_2">
<property name="geometry">
<rect>
<x>300</x>
<y>420</y>
<width>281</width>
<height>31</height>
</rect>
</property>
<property name="font">
<font>
<family>Gravity</family>
<pointsize>13</pointsize>
<weight>75</weight>
<italic>true</italic>
<bold>true</bold>
<underline>false</underline>
<strikeout>false</strikeout>
</font>
</property>
<property name="focusPolicy">
<enum>Qt::StrongFocus</enum>
</property>
<property name="layoutDirection">
<enum>Qt::LeftToRight</enum>
</property>
<property name="styleSheet">
<string notr="true">
color: rgb(169, 206, 244);
border-radius: 30px;
</string>
</property>
<property name="text">
<string>Current World Data</string>
</property>
<property name="checkable">
<bool>false</bool>
</property>
</widget>
</widget>
</item>
</layout>
</widget>
</widget>
<resources/>
<connections/>
</ui>
主脚本
from PyQt5 import QtWidgets, uic
import sys
from bs4 import BeautifulSoup
import requests
import re
url = 'https://www.worldometers.info/coronavirus/'
page = requests.get(url)
soup = BeautifulSoup(page.content, 'html.parser')
class Ui(QtWidgets.QMainWindow):
def __init__(self):
super(Ui, self).__init__()
uic.loadUi('AutoSize.ui', self)
self.show()
app = QtWidgets.QApplication(sys.argv)
window = Ui()
app.exec_()
data = []
for x in range(0, 3):
x = soup.find_all(class_ = 'maincounter-number')[x].find('span').text
data.append(x)
Active = int((re.sub("[],]","", data[0]))) - (int((re.sub("[],]","", data[1]))) + int((re.sub("[],]","", data[2]))))
res = ":,".format(Active)
con = data[0]
det = data[1]
rec = data[2]
act = str(res)
【问题讨论】：
【参考方案1】：获取信息的任务非常耗时，所以不应该在主线程中执行，而是在辅助线程中执行，并通过信号发送信息。 OP 没有明确描述它应该在什么事件之前更新，所以在我的示例中，我将使用 QTimer 每 T 秒更新一次：
import sys
import threading
from PyQt5 import QtCore, QtWidgets, uic
from bs4 import BeautifulSoup
import requests
class Scrapper(QtCore.QObject):
dataChanged = QtCore.pyqtSignal(tuple)
def start(self):
threading.Thread(target=self._execute, daemon=True).start()
def _execute(self):
url = "https://www.worldometers.info/coronavirus/"
page = requests.get(url)
soup = BeautifulSoup(page.content, "html.parser")
data = []
for e in soup.find_all(class_="maincounter-number"):
value = int(e.find("span").text.strip().replace(",", ""))
data.append(value)
total, deaths, recovered = data
active = total - deaths - recovered
self.dataChanged.emit((total, deaths, recovered, active))
class Ui(QtWidgets.QMainWindow):
def __init__(self):
super(Ui, self).__init__()
uic.loadUi("AutoSize.ui", self)
self.s = Scrapper()
self.s.dataChanged.connect(self.update_data)
self.s.start()
@QtCore.pyqtSlot(tuple)
def update_data(self, data):
total, deaths, recovered, active = data
self.Confirmed.setText("Confirmed\n:,".format(total))
self.Active.setText("Active\n:,".format(active))
self.Recovered.setText("Recovered\n:,".format(recovered))
self.Deaths.setText("Deaths\n:,".format(deaths))
QtCore.QTimer.singleShot(2 * 1000, self.s.start)
def main():
app = QtWidgets.QApplication(sys.argv)
window = Ui()
window.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
【讨论】：
这段代码显示 ValueError: invalid literal for int() with base 10: '29,675,950' 我想将总数、死亡、活跃和恢复到 UI 中 是的，只是再次复制粘贴整个内容，同样的错误 :( 声明数据时似乎是个问题 = [] 如果你不介意，你能给我解释一下这里发生了什么吗？这是我第一次使用 UI @SumukhJadhav 我的回答清楚地解释了我实现的内容，我认为您并不完全理解，因为它是 这是我第一次使用 UI，不幸的是我和我都不是导师们，我建议你复习教程，再见。以上是关于动态更新标签/按钮文本的主要内容，如果未能解决你的问题，请参考以下文章