PyQt5 – 计算你活了多少秒的计算器

在这篇文章中，我们将看到如何创建计算器来计算一个人活了多少秒。下面是这个计算器的样子

概念： 我们可以通过获取出生日期和出生时间与现在的日期和时间之间的差值，在Python数据时间对象的帮助下，获得以秒为单位的年龄，它将保持闰年的计数，我们可以得到日期之间的天数和秒数。然后这些天数可以转换成秒数，得到总秒数。

GUI实施步骤：

1.创建一个标题标签，显示计算器的名称

2.创建标签以显示用户选择出生日期和出生时间

3.创建一个QCalendarWidget对象让用户选择出生日期

4.创建一个QTimeEdit对象来获取出生时间

5.创建一个按钮来计算以秒为单位的年龄

6.创建一个标签来显示计算出的年龄（以秒为单位）

后台实现：

1.使日历成为未来日期块，即设置当前日期为最大日期

2.为按钮添加动作

3.在按钮动作中，从日历中获取日期，从QTimeEdit中获取时间

4.从日期中获取日、月和年，从时间编辑中获取小时和分钟

5.为当前日期和出生日期创建一个数据时间对象

6.从这两个日期中获取差值，并得到天数和秒数

7.将天数转换为秒数，并将其添加到原始秒数中

8.通过标签显示计算出的秒值

以下是实施方案

# importing libraries
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import datetime
import sys
 
 
class Window(QMainWindow):
 
    def __init__(self):
        super().__init__()
 
        # setting title
        self.setWindowTitle("Python ")
 
        # width of window
        self.w_width = 400
 
        # height of window
        self.w_height = 500
 
        # setting geometry
        self.setGeometry(100, 100, self.w_width, self.w_height)
 
        # calling method
        self.UiComponents()
 
        # showing all the widgets
        self.show()
 
    # method for components
    def UiComponents(self):
 
        # creating head label
        head = QLabel("Age in Seconds Calculator", self)
 
        head.setWordWrap(True)
 
        # setting geometry to the head
        head.setGeometry(0, 10, 400, 60)
 
        # font
        font = QFont('Times', 15)
        font.setBold(True)
        font.setItalic(True)
        font.setUnderline(True)
 
        # setting font to the head
        head.setFont(font)
 
        # setting alignment of the head
        head.setAlignment(Qt.AlignCenter)
 
        # setting color effect to the head
        color = QGraphicsColorizeEffect(self)
        color.setColor(Qt.darkCyan)
        head.setGraphicsEffect(color)
 
        # creating a label
        b_label = QLabel("Select Birthday and Time", self)
 
        # setting properties  label
        b_label.setAlignment(Qt.AlignCenter)
        b_label.setGeometry(50, 95, 300, 25)
        b_label.setStyleSheet("QLabel"
                              "{"
                              "border : 1px solid black;"
                              "background : rgba(70, 70, 70, 25);"
                              "}")
        b_label.setFont(QFont('Times', 9))
 
        # creating a calendar widget to select the date
        self.calendar = QCalendarWidget(self)
 
        # setting geometry of the calendar
        self.calendar.setGeometry(50, 120, 300, 180)
 
        # setting font to the calendar
        self.calendar.setFont(QFont('Times', 6))
 
        # getting current date
        date = QDate.currentDate()
 
        # blocking future dates
        self.calendar.setMaximumDate(date)
 
        # creating a time edit object to receive time
        self.time = QTimeEdit(self)
 
        # setting properties to the time
        self.time.setGeometry(50, 300, 300, 30)
        self.time.setAlignment(Qt.AlignCenter)
        self.time.setFont(QFont('Times', 9))
 
 
        # creating a push button
        calculate = QPushButton("Calculate Time", self)
 
        # setting geometry to the push button
        calculate.setGeometry(125, 360, 150, 40)
 
        # adding action to the calculate button
        calculate.clicked.connect(self.calculate_action)
 
        # creating a label to show percentile
        self.result = QLabel(self)
 
        # setting properties to result label
        self.result.setAlignment(Qt.AlignCenter)
        self.result.setGeometry(50, 420, 300, 60)
        self.result.setWordWrap(True)
        self.result.setStyleSheet("QLabel"
                                  "{"
                                  "border : 3px solid black;"
                                  "background : white;"
                                  "}")
        self.result.setFont(QFont('Arial', 11))
 
 
    def calculate_action(self):
 
        # getting birth date day
        birth = self.calendar.selectedDate()
 
        # getting year and month day of birth day
        birth_year = birth.year()
        birth_month = birth.month()
        birth_day = birth.day()
 
        # getting time of from the time edit
        time = self.time.time()
 
        # getting hour and seconds
        hour = time.hour()
        minute = time.minute()
 
        # getting today date
        current = QDate.currentDate()
 
        # getting year and month day of current day
        current = datetime.datetime.now()
 
 
        # converting  date into date object
        birth_date = datetime.datetime(birth_year, birth_month, birth_day, hour, minute, 0)
 
        # getting difference in both the dates
        difference = current - birth_date
 
        # getting difference in days
        days = difference.days
 
        # setting seconds
        seconds = difference.seconds
 
        # converting days into second and adding them
        seconds = seconds + days * 24 * 60 * 60
 
 
 
        # setting this value with the help of label
        self.result.setText("Age in seconds : " + str(seconds))
 
  
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())