在 QtableWidget 中使用字典处理
Handle with dictionary in QtableWidget
我在我的项目中有一个从 CSV 文件导入数据的 CSV 模块。 "generateCsvData"方法将其转换为字典，我想将数据插入到许多QtableWidgets中（取决于一些处理和计算）。例如 "updateData" 可以将一个项目插入到第二个 QtableWidget 的单元格 (24,5) 中，这里的问题是，当我想执行程序和读取设置时，在调试控制台中显示：
{}
None。
我知道 python 引用全局范围结果的第一个值 = {}
class MyWindow(QMainWindow):
def __init__(self, aPath, parent=None):
super(MyWindow, self).__init__(parent)
self.delimit = '\t'
self.fileName = ""
self.result = {}
def generateCsvData(self, fileName):
f = open(fileName, 'r')
mystring = f.read()
if mystring.count(",") > mystring.count('\t'):
if mystring.count(",") > mystring.count(';'):
self.delimit = ","
elif mystring.count(";") > mystring.count(','):
self.delimit = ";"
else:
self.delimit = "\t"
elif mystring.count(";") > mystring.count('\t'):
self.delimit = ';'
else:
self.delimit = "\t"
f.close()
f = open(fileName, 'r')
with f:
f = open(fileName, 'r')
reader = csv.reader(f, delimiter=self.delimit)
header=[[head] for head in next(reader)]
for row in reader:
key = row[0] #####
print(row)
if key in self.result:
pass
self.result[key] = (row [1:])
print (self.result)
def updateData(self, k, v, n, m):
print (self.result)
#print("Value : %s" % self.result.get(k, "Never"))
item = self.result.get(k)[v]
print(item)
newItem = QTableWidgetItem(str(item))
newItem.setForeground(QBrush(QColor(255, 0, 0)))
self.ui.tableWidget_Bilan.setItem(n, m, newItem)
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow('')
main.updateData(k="11110000", v=0, n=24, m=4)
main.setMinimumSize(820, 300)
main.show()
sys.exit(app.exec_())
当我点击按钮执行 "updateData" 方法时，我得到 TypeError: updateData() missing 3 required positional arguments: 'v', 'n', and 'm'.那么在字典满后我如何使用"updateData"或任何其他方法呢？请有任何想法，谢谢！
试一试：
main.py
import csv
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class MyWindow(QMainWindow):
def __init__(self, aPath, parent=None):
super(MyWindow, self).__init__(parent)
centralWidget = QWidget()
self.setCentralWidget(centralWidget)
self.tableWidget = QTableWidget(self)
self.tableWidget.setRowCount(55)
self.tableWidget.setColumnCount(14)
conLayout = QHBoxLayout(centralWidget)
conLayout.addWidget(self.tableWidget)
self.fileName = "csv.csv" # +
self.result = {}
self.generateCsvData(self.fileName) # +
def generateCsvData(self, fileName): # +
with open(fileName, "r") as fileInput:
for i, row in enumerate(csv.reader(fileInput)):
if i:
self.result[row[0]] = (row[1:])
def updateData(self, k, v, n, m):
[print(kk, vv) for kk, vv in self.result.items()]
item = self.result.get(k)[v]
print("\nitem =`{}`".format(item))
newItem = QTableWidgetItem(str(item))
newItem.setForeground(QBrush(QColor(255, 0, 0)))
# self.ui.tableWidget_Bilan.setItem(n, m, newItem) # -
self.tableWidget.setItem(n, m, newItem) # +
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow('')
main.updateData(k="11110000", v=0, n=24, m=4)
main.setMinimumSize(820, 300)
main.show()
sys.exit(app.exec_())
csv.csv
key, item1, item2, item3, item4, item5, item6, item7, item8, item9, item10, item11, item12, item13
1111, Title 1, 12521, 94565, , , , 684651, , , 44651, , ,
1112, Title 2, 65115, , 466149, 46645, 555641, , , , 412045, 98416, ,
1113, Title 3, 243968, , , 466149, 46645, 555641, 98656, , , 412045, 98416,
11110000,Title 4,243968, , , 466149, 46645, 555641, 98656, , , 412045, 98416,
更新
import csv
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class MyWindow(QMainWindow):
def __init__(self, aPath, parent=None):
super(MyWindow, self).__init__(parent)
centralWidget = QWidget()
self.setCentralWidget(centralWidget)
self.tableWidget = QTableWidget(self)
self.tableWidget.setRowCount(55)
self.tableWidget.setColumnCount(14)
button = QPushButton("Select csv file") # +
button.clicked.connect(self.selectCsvFile) # +
conLayout = QHBoxLayout(centralWidget)
conLayout.addWidget(self.tableWidget)
conLayout.addWidget(button) # +
self.fileName = "" # - "csv.csv"
self.result = {}
def generateCsvData(self, fileName):
with open(fileName, "r") as fileInput:
for i, row in enumerate(csv.reader(fileInput)):
if i:
self.result[row[0]] = (row[1:])
if self.result: # +
self.updateData(k="11110000", v=0, n=24, m=4) # + !!!
def updateData(self, k, v, n, m):
if not self.result: return # +
[print(kk, vv) for kk, vv in self.result.items()]
item = self.result.get(k)[v]
print("\nitem =`{}`".format(item))
newItem = QTableWidgetItem(str(item))
newItem.setForeground(QBrush(QColor(255, 0, 0)))
self.tableWidget.setItem(n, m, newItem)
# +++ vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
def selectCsvFile(self):
self.fileName, _ = QFileDialog.getOpenFileName(
self,
'Open file',
'',
"Csv Files (*.csv)")
if self.fileName:
print("\n {} \n".format(self.fileName))
self.generateCsvData(self.fileName)
# +++ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow('')
# main.updateData(k="11110000", v=0, n=24, m=4) # --- !!!
main.setMinimumSize(820, 300)
main.show()
sys.exit(app.exec_())
我在我的项目中有一个从 CSV 文件导入数据的 CSV 模块。 "generateCsvData"方法将其转换为字典，我想将数据插入到许多QtableWidgets中（取决于一些处理和计算）。例如 "updateData" 可以将一个项目插入到第二个 QtableWidget 的单元格 (24,5) 中，这里的问题是，当我想执行程序和读取设置时，在调试控制台中显示： {} None。 我知道 python 引用全局范围结果的第一个值 = {}
class MyWindow(QMainWindow):
def __init__(self, aPath, parent=None):
super(MyWindow, self).__init__(parent)
self.delimit = '\t'
self.fileName = ""
self.result = {}
def generateCsvData(self, fileName):
f = open(fileName, 'r')
mystring = f.read()
if mystring.count(",") > mystring.count('\t'):
if mystring.count(",") > mystring.count(';'):
self.delimit = ","
elif mystring.count(";") > mystring.count(','):
self.delimit = ";"
else:
self.delimit = "\t"
elif mystring.count(";") > mystring.count('\t'):
self.delimit = ';'
else:
self.delimit = "\t"
f.close()
f = open(fileName, 'r')
with f:
f = open(fileName, 'r')
reader = csv.reader(f, delimiter=self.delimit)
header=[[head] for head in next(reader)]
for row in reader:
key = row[0] #####
print(row)
if key in self.result:
pass
self.result[key] = (row [1:])
print (self.result)
def updateData(self, k, v, n, m):
print (self.result)
#print("Value : %s" % self.result.get(k, "Never"))
item = self.result.get(k)[v]
print(item)
newItem = QTableWidgetItem(str(item))
newItem.setForeground(QBrush(QColor(255, 0, 0)))
self.ui.tableWidget_Bilan.setItem(n, m, newItem)
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow('')
main.updateData(k="11110000", v=0, n=24, m=4)
main.setMinimumSize(820, 300)
main.show()
sys.exit(app.exec_())
当我点击按钮执行 "updateData" 方法时，我得到 TypeError: updateData() missing 3 required positional arguments: 'v', 'n', and 'm'.那么在字典满后我如何使用"updateData"或任何其他方法呢？请有任何想法，谢谢！
试一试：
main.py
import csv
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class MyWindow(QMainWindow):
def __init__(self, aPath, parent=None):
super(MyWindow, self).__init__(parent)
centralWidget = QWidget()
self.setCentralWidget(centralWidget)
self.tableWidget = QTableWidget(self)
self.tableWidget.setRowCount(55)
self.tableWidget.setColumnCount(14)
conLayout = QHBoxLayout(centralWidget)
conLayout.addWidget(self.tableWidget)
self.fileName = "csv.csv" # +
self.result = {}
self.generateCsvData(self.fileName) # +
def generateCsvData(self, fileName): # +
with open(fileName, "r") as fileInput:
for i, row in enumerate(csv.reader(fileInput)):
if i:
self.result[row[0]] = (row[1:])
def updateData(self, k, v, n, m):
[print(kk, vv) for kk, vv in self.result.items()]
item = self.result.get(k)[v]
print("\nitem =`{}`".format(item))
newItem = QTableWidgetItem(str(item))
newItem.setForeground(QBrush(QColor(255, 0, 0)))
# self.ui.tableWidget_Bilan.setItem(n, m, newItem) # -
self.tableWidget.setItem(n, m, newItem) # +
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow('')
main.updateData(k="11110000", v=0, n=24, m=4)
main.setMinimumSize(820, 300)
main.show()
sys.exit(app.exec_())
csv.csv
key, item1, item2, item3, item4, item5, item6, item7, item8, item9, item10, item11, item12, item13
1111, Title 1, 12521, 94565, , , , 684651, , , 44651, , ,
1112, Title 2, 65115, , 466149, 46645, 555641, , , , 412045, 98416, ,
1113, Title 3, 243968, , , 466149, 46645, 555641, 98656, , , 412045, 98416,
11110000,Title 4,243968, , , 466149, 46645, 555641, 98656, , , 412045, 98416,
更新
import csv
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class MyWindow(QMainWindow):
def __init__(self, aPath, parent=None):
super(MyWindow, self).__init__(parent)
centralWidget = QWidget()
self.setCentralWidget(centralWidget)
self.tableWidget = QTableWidget(self)
self.tableWidget.setRowCount(55)
self.tableWidget.setColumnCount(14)
button = QPushButton("Select csv file") # +
button.clicked.connect(self.selectCsvFile) # +
conLayout = QHBoxLayout(centralWidget)
conLayout.addWidget(self.tableWidget)
conLayout.addWidget(button) # +
self.fileName = "" # - "csv.csv"
self.result = {}
def generateCsvData(self, fileName):
with open(fileName, "r") as fileInput:
for i, row in enumerate(csv.reader(fileInput)):
if i:
self.result[row[0]] = (row[1:])
if self.result: # +
self.updateData(k="11110000", v=0, n=24, m=4) # + !!!
def updateData(self, k, v, n, m):
if not self.result: return # +
[print(kk, vv) for kk, vv in self.result.items()]
item = self.result.get(k)[v]
print("\nitem =`{}`".format(item))
newItem = QTableWidgetItem(str(item))
newItem.setForeground(QBrush(QColor(255, 0, 0)))
self.tableWidget.setItem(n, m, newItem)
# +++ vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
def selectCsvFile(self):
self.fileName, _ = QFileDialog.getOpenFileName(
self,
'Open file',
'',
"Csv Files (*.csv)")
if self.fileName:
print("\n {} \n".format(self.fileName))
self.generateCsvData(self.fileName)
# +++ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow('')
# main.updateData(k="11110000", v=0, n=24, m=4) # --- !!!
main.setMinimumSize(820, 300)
main.show()
sys.exit(app.exec_())