我有两个不同的Python文件。一个是GUI细节，另一个是使用Code来使用Watchdog API监视文件夹
GUI Py文件：
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'csvExcel.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
import os
from Main_File import Watcher, DataFrameTableWidget
class Ui_MainWindow(object):
def __init__(self):
self.file_Name = None
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
self.gridLayout_2 = QtWidgets.QGridLayout()
self.gridLayout_2.setObjectName("gridLayout_2")
self.start_button = QtWidgets.QPushButton(self.centralwidget)
self.start_button.setAutoFillBackground(False)
self.start_button.setAutoDefault(False)
self.start_button.setDefault(False)
self.start_button.setFlat(False)
self.start_button.setObjectName("start_button")
self.start_button.clicked.connect(lambda: self.start_button_click())
self.gridLayout_2.addWidget(self.start_button, 0, 0, 1, 1)
self.Br_button = QtWidgets.QPushButton(self.centralwidget)
self.Br_button.setObjectName("Br_button")
self.Br_button.clicked.connect(lambda: self.browse_button())
self.gridLayout_2.addWidget(self.Br_button, 2, 0, 1, 1)
self.label = QtWidgets.QLabel(self.centralwidget)
font = QtGui.QFont()
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName("label")
self.gridLayout_2.addWidget(self.label, 2, 1, 1, 1, QtCore.Qt.AlignHCenter)
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(0)
self.tableWidget.setRowCount(0)
self.gridLayout_2.addWidget(self.tableWidget, 3, 0, 1, 2)
self.gridLayout.addLayout(self.gridLayout_2, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.start_button.setToolTip(_translate("MainWindow", "Start The Program"))
self.start_button.setText(_translate("MainWindow", "Start"))
self.Br_button.setToolTip(_translate("MainWindow", "Browse the File Location to Watch on"))
self.Br_button.setText(_translate("MainWindow", "Browse"))
self.label.setText(_translate("MainWindow", "Sensor CSV To Excel"))
def start_button_click(self):
watcher = Watcher(self.file_Name)
if self.start_button.text() == "Start":
self.start_button.setText("Stop")
w = DataFrameTableWidget(self.tableWidget)
watcher.emitter.newDataFrameSignal.connect(w.append_dataframe)
watcher.run()
elif self.start_button.text() == "Stop":
self.start_button.setText("Start")
watcher.stop_watcher()
def browse_button(self):
self.file_Name = QtWidgets.QFileDialog.getExistingDirectory(None, 'Open working directory', os.getcwd(), QtWidgets.QFileDialog.ShowDirsOnly)
print(self.file_Name)
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_())
具有看门狗实现的Python代码文件
import os
import pandas as pd
from PyQt5 import QtCore, QtWidgets
from watchdog.events import PatternMatchingEventHandler
from watchdog.observers import Observer
import time
from Append_Function import append_df_to_excel
class Emitter(QtCore.QObject):
newDataFrameSignal = QtCore.pyqtSignal(pd.DataFrame)
class Watcher:
def __init__(self, filename):
self.watch_dir = os.getcwd()
self.directory_to_watch = os.path.join(self.watch_dir, filename)
self.emitter = Emitter()
self.observer = Observer()
self.event_handler = Handler(
emitter=self.emitter,
patterns=["*.CSV"],
ignore_patterns=["*.tmp"],
ignore_directories=True
)
def run(self):
self.observer.schedule(self.event_handler, self.directory_to_watch, recursive=False)
self.observer.start()
def stop_watcher(self):
self.observer.stop()
class Handler(PatternMatchingEventHandler):
def __init__(self, *args, emitter=None, **kwargs):
super(Handler, self).__init__(*args, **kwargs)
self._emitter = emitter
self.file_name = time.strftime("%Y%m%d-%H%M%S")+".xlsx"
def on_any_event(self, event):
if event.is_directory:
return None
elif event.event_type == 'created':
# Take any action here when a file is first created.
print("Received created event - %s." % event.src_path)
if os.path.isfile(os.path.join(os.getcwd(), self.file_name)):
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=1, index_col=0))
df = pd.read_csv(event.src_path, header=1)
else:
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=0, index_col=0))
df = pd.read_csv(event.src_path, header=0)
self._emitter.newDataFrameSignal.emit(df.copy())
df.set_index(df.columns.values.tolist()[0], inplace=True)
elif event.event_type == 'modified':
print("Modified created event - %s." % event.src_path)
if os.path.isfile(os.path.join(os.getcwd(), self.file_name)):
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=1, index_col=0))
df = pd.read_csv(event.src_path, header=1)
else:
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=0, index_col=0))
df = pd.read_csv(event.src_path, header=0)
self._emitter.newDataFrameSignal.emit(df.copy())
df.set_index(df.columns.values.tolist()[0], inplace=True)
class DataFrameTableWidget(QtWidgets.QTableWidget):
@QtCore.pyqtSlot(pd.DataFrame)
def append_dataframe(self, df):
df = df.copy()
if df.columns.size > self.columnCount():
self.setColumnCount(df.columns.size)
r = self.rowCount()
self.insertRow(r)
for c, column in enumerate(df):
it = QtWidgets.QTableWidgetItem(column)
self.setItem(r, c, it)
i = self.rowCount()
for r, row in df.iterrows():
self.insertRow(self.rowCount())
for c, (column, value) in enumerate(row.iteritems()):
it = QtWidgets.QTableWidgetItem(str(value))
self.setItem(i+r, c, it)
在此文件中，您可以看到我使用了一个函数“Append_Function”实际上是将数据附加到Excel文件中（如果需要，我将编辑以添加函数代码）。
我的问题
在Watchdog实现文件中，您可以看到该DataFrameTableWidget类中有自定义Pyslot。生成数据帧时，它将变为活动状态。因此，数据框中的数据显示在QWidget表中，因为DataFrameTableWidget类继承了QTableWidget。
现在你可以看到我为我的应用程序创建了一个单独的GUI，其中包含一个表格小部件。我希望将来自pandas Data frame的数据显示到我的GUI表Widget中，而不是显示到我的WatchDog实现文件中由DataFrameTableWidget Class继承的QTableWidget中。
我在想，以某种方式从GUI初始化带有QTableWidget的DataFrameTableWidget类可能会起作用。但我不确定我是否可以将QTableWidget传递给DataFrameTaleWidget类初始化（即.init）函数，以便我可以将我的GUI表格Widget引用到我的Watchdog实现文件中。
我尽力在这里解决我的问题。但如果仍然面临问题，同时理解我将编辑并将尝试使其更清楚。
谢谢！
更新代码版本
CSV excel GUI.朋友
from PyQt5 import QtCore, QtGui, QtWidgets
import os
from Main_File import Watcher, DataFrameTableWidget
class Ui_MainWindow(object):
def __init__(self):
self.file_Name = None
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
self.gridLayout_2 = QtWidgets.QGridLayout()
self.gridLayout_2.setObjectName("gridLayout_2")
self.start_button = QtWidgets.QPushButton(self.centralwidget)
self.start_button.setAutoFillBackground(False)
self.start_button.setAutoDefault(False)
self.start_button.setDefault(False)
self.start_button.setFlat(False)
self.start_button.setObjectName("start_button")
#self.start_button.clicked.connect(lambda: self.start_button_click())
self.gridLayout_2.addWidget(self.start_button, 0, 0, 1, 1)
self.Br_button = QtWidgets.QPushButton(self.centralwidget)
self.Br_button.setObjectName("Br_button")
self.Br_button.clicked.connect(lambda: self.browse_button())
self.gridLayout_2.addWidget(self.Br_button, 2, 0, 1, 1)
self.label = QtWidgets.QLabel(self.centralwidget)
font = QtGui.QFont()
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName("label")
self.gridLayout_2.addWidget(self.label, 2, 1, 1, 1, QtCore.Qt.AlignHCenter)
#self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget = DataFrameTableWidget(self.centralwidget)
self.tableWidget.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(0)
self.tableWidget.setRowCount(0)
self.gridLayout_2.addWidget(self.tableWidget, 3, 0, 1, 2)
self.gridLayout.addLayout(self.gridLayout_2, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.start_button.setToolTip(_translate("MainWindow", "Start The Program"))
self.start_button.setText(_translate("MainWindow", "Start"))
self.Br_button.setToolTip(_translate("MainWindow", "Browse the File Location to Watch on"))
self.Br_button.setText(_translate("MainWindow", "Browse"))
self.label.setText(_translate("MainWindow", "Sensor CSV To Excel"))
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.start_button.clicked.connect(self.start_button_click)
self.watcher = Watcher()
self.watcher.emitter.newDataFrameSignal.connect(self.tableWidget.append_dataframe)
self.file_Name = ""
def start_button_click(self):
self.watcher.set_filename(self.file_Name)
if self.start_button.text() == "Start":
self.start_button.setText("Stop")
self.watcher.run()
elif self.start_button.text() == "Stop":
self.start_button.setText("Start")
self.watcher.stop_watcher()
def browse_button(self):
self.file_Name = QtWidgets.QFileDialog.getExistingDirectory(None, 'Open working directory', os.getcwd(), QtWidgets.QFileDialog.ShowDirsOnly)
print(self.file_Name)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
# MainWindow = QtWidgets.QMainWindow()
# ui = Ui_MainWindow()
# ui.setupUi(MainWindow)
# MainWindow.show()
w = MainWindow()
w.show()
sys.exit(app.exec_())
main_file.朋友
import os
import pandas as pd
from PyQt5 import QtCore, QtWidgets
from watchdog.events import PatternMatchingEventHandler
from watchdog.observers import Observer
import time
from Append_Function import append_df_to_excel
class Emitter(QtCore.QObject):
newDataFrameSignal = QtCore.pyqtSignal(pd.DataFrame)
class Watcher:
def __init__(self):
self.watch_dir = os.getcwd()
self.directory_to_watch = None
self.emitter = Emitter()
self.observer = Observer()
self.event_handler = Handler(
emitter=self.emitter,
patterns=["*.CSV"],
ignore_patterns=["*.tmp"],
ignore_directories=True
)
def set_filename(self, filename):
self.directory_to_watch = os.path.join(self.watch_dir, filename)
def run(self):
self.observer.schedule(self.event_handler, self.directory_to_watch, recursive=False)
self.observer.start()
def stop_watcher(self):
self.observer.stop()
class Handler(PatternMatchingEventHandler):
def __init__(self, *args, emitter=None, **kwargs):
super(Handler, self).__init__(*args, **kwargs)
self._emitter = emitter
self.file_name = time.strftime("%Y%m%d-%H%M%S")+".xlsx"
def on_any_event(self, event):
if event.is_directory:
return None
elif event.event_type == 'created':
# Take any action here when a file is first created.
print("Received created event - %s." % event.src_path)
if os.path.isfile(os.path.join(os.getcwd(), self.file_name)):
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=1, index_col=0))
df = pd.read_csv(event.src_path, header=1)
else:
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=0, index_col=0))
df = pd.read_csv(event.src_path, header=0)
self._emitter.newDataFrameSignal.emit(df.copy())
df.set_index(df.columns.values.tolist()[0], inplace=True)
elif event.event_type == 'modified':
print("Modified created event - %s." % event.src_path)
if os.path.isfile(os.path.join(os.getcwd(), self.file_name)):
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=1, index_col=0))
df = pd.read_csv(event.src_path, header=1)
else:
append_df_to_excel(os.path.join(os.getcwd(), self.file_name),
pd.read_csv(event.src_path, header=0, index_col=0))
df = pd.read_csv(event.src_path, header=0)
self._emitter.newDataFrameSignal.emit(df.copy())
df.set_index(df.columns.values.tolist()[0], inplace=True)
class DataFrameTableWidget(QtWidgets.QTableWidget):
@QtCore.pyqtSlot(pd.DataFrame)
def append_dataframe(self, df):
df = df.copy()
if df.columns.size > self.columnCount():
self.setColumnCount(df.columns.size)
r = self.rowCount()
self.insertRow(r)
for c, column in enumerate(df):
it = QtWidgets.QTableWidgetItem(column)
self.setItem(r, c, it)
i = self.rowCount()
for r, row in df.iterrows():
self.insertRow(self.rowCount())
for c, (column, value) in enumerate(row.iteritems()):
it = QtWidgets.QTableWidgetItem(str(value))
self.setItem(i+r, c, it)
您的代码有以下错误：
w = DataFrameTableWidget(self.tableWidget)，你只是指出Data Frame qTableWidget是QTableWidget的子代（也就是说，它将放在widget中），并且不会替换它。watcher = Watcher(self.file_Name)是一个局部变量，在完成执行start_button_click时将被删除。假设您的代码在添加GUI之前有效，我将进行以下修改：
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)更改self.tableWidget = DataFrameTableWidget(self.centralwidget)，如果你有.ui它会教你使用如何通过Qt Designer设置新的小部件。main_file.朋友
# ...
class Watcher:
def __init__(self):
self.watch_dir = os.getcwd()
self.emitter = Emitter()
self.observer = Observer()
self.event_handler = Handler(
emitter=self.emitter,
patterns=["*.CSV"],
ignore_patterns=["*.tmp"],
ignore_directories=True
)
def set_filename(self, filename):
self.directory_to_watch = os.path.join(self.watch_dir, filename)
# ...
卖弄.朋友
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'csvExcel.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
import os
from Main_File import Watcher, DataFrameTableWidget
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
self.gridLayout_2 = QtWidgets.QGridLayout()
self.gridLayout_2.setObjectName("gridLayout_2")
self.start_button = QtWidgets.QPushButton(self.centralwidget)
self.start_button.setAutoFillBackground(False)
self.start_button.setAutoDefault(False)
self.start_button.setDefault(False)
self.start_button.setFlat(False)
self.start_button.setObjectName("start_button")
self.gridLayout_2.addWidget(self.start_button, 0, 0, 1, 1)
self.Br_button = QtWidgets.QPushButton(self.centralwidget)
self.Br_button.setObjectName("Br_button")
self.Br_button.clicked.connect(lambda: self.browse_button())
self.gridLayout_2.addWidget(self.Br_button, 2, 0, 1, 1)
self.label = QtWidgets.QLabel(self.centralwidget)
font = QtGui.QFont()
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName("label")
self.gridLayout_2.addWidget(self.label, 2, 1, 1, 1, QtCore.Qt.AlignHCenter)
self.tableWidget = DataFrameTableWidget(self.centralwidget)
self.tableWidget.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(0)
self.tableWidget.setRowCount(0)
self.gridLayout_2.addWidget(self.tableWidget, 3, 0, 1, 2)
self.gridLayout.addLayout(self.gridLayout_2, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.start_button.setToolTip(_translate("MainWindow", "Start The Program"))
self.start_button.setText(_translate("MainWindow", "Start"))
self.Br_button.setToolTip(_translate("MainWindow", "Browse the File Location to Watch on"))
self.Br_button.setText(_translate("MainWindow", "Browse"))
self.label.setText(_translate("MainWindow", "Sensor CSV To Excel"))
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.start_button.clicked.connect(self.start_button_click)
self.watcher = Watcher()
self.watcher.emitter.newDataFrameSignal.connect(self.tableWidget.append_dataframe)
self.file_Name = ""
def start_button_click(self):
self.watcher.set_filename(self.file_Name)
if self.start_button.text() == "Start":
self.start_button.setText("Stop")
self.watcher.run()
elif self.start_button.text() == "Stop":
self.start_button.setText("Start")
self.watcher.stop_watcher()
def browse_button(self):
self.file_Name = QtWidgets.QFileDialog.getExistingDirectory(None, 'Open working directory', os.getcwd(), QtWidgets.QFileDialog.ShowDirsOnly)
print(self.file_Name)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())