pyqt5使用QFile跟QDataStream进行二进制文件的读写

        Python如何想将数据写入二进制文件，需要借助于struct库才可以实现，pyqt5有内置的文件读写接口，可以直接操作二进制数据，非常方便

from PyQt5.QtCore import QFile, QIODevice, QDataStream


Value = '3FFF'
filename = 'aaa.bin'
fileDevice = QFile(filename)

f = fileDevice.open(QIODevice.ReadWrite | QIODevice.Text )      # 设置文件打开模式，返回值为bool类型
print(f)

def writeBinDemo():
    # 写入二进制文件
    try:
        dataStream = QDataStream(fileDevice)
        for x in range(64):
            dataStream.writeInt16(int(Value, 16))
    finally:
        fileDevice.close()


def readBinDemo():
    # 读取二进制文件
    try:
        dataStream = QDataStream(fileDevice)
        while not dataStream.atEnd():
            binData = dataStream.readInt16()        # 值读取16位
            print(hex(binData))

    finally:
        fileDevice.close()


if __name__ == '__main__':
    writeBinDemo()
    # readBinDemo()