尊敬的用户。我在QSqlTableView的数据库SQLite3中显示值时遇到问题。从代码中可以看到，我在数据库中的逗号后加载了3个字符的数字，但是通过在QSqlTableView中自动显示以使其在单元格中显示出现了QDoubleSpinBox并自动舍入了值最多2个字符。我可以重载QDoubleSpinBox或为此元素重新安装setDecimals还是在表中这样做以显示诸如real的值，请不要安装QDoubleSpinBox和通常的lineEdit吗？这是我的代码：
from PyQt5 import QtCore, QtGui, QtWidgets, QtSql
import sys
import sqlite3
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent = None):
super().__init__()
self.initUI()
self.create_table()
self.open_table()
def initUI(self):
self.my_dbtable_view = QtWidgets.QTableView(self)
self.my_dbtable_view.resize(490,200)
self.my_dbtable_view.move(5,5)
self.setGeometry(300, 300, 500, 210)
self.setWindowTitle('Title')
self.show()
def create_table(self):
connect = sqlite3.connect('test.db')
cursor = connect.cursor()
try:
cursor.execute('CREATE TABLE test_table (lenght REAL)')
new_list = [round(x * 0.001, 3) for x in range(1500000,1500500)]
for elem in new_list:
cursor.execute('INSERT INTO test_table VALUES({0})' .format(elem))
connect.commit()
cursor.close()
connect.close()
except sqlite3.OperationalError:
pass
def open_table(self):
self.con = QtSql.QSqlDatabase.addDatabase('QSQLITE')
self.con.setDatabaseName(r'.\test.db')
self.con.open()
self.stm = QtSql.QSqlTableModel(parent = None)
self.stm.setTable('test_table')
self.stm.setSort(1, QtCore.Qt.AscendingOrder)
self.stm.select()
self.stm.setHeaderData(0, QtCore.Qt.Horizontal, 'Lenght')
self.my_dbtable_view.setModel(self.stm)
self.my_dbtable_view.setColumnWidth(0, 100)
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
myapp = MainWindow()
sys.exit(app.exec_())