Ульяна Illiterate

>>> def read_blocks(fname, block_size):
...     with open(fname, 'rb') as fin:
...         while True:
...             data = fin.read(block_size)
...             if data:
...                 yield data
...             else:
...                 break
... 
>>> out = read_blocks('/etc/passwd', 8)
>>> 
>>> list(out)[:5]
[b'root:x:0', b':0:root:', b'/root:/b', b'in/bash\n', b'bin:x:1:']
>>> 
>>> out = read_blocks('/etc/passwd', 10)
>>> 
>>> list(out)[:5]
[b'root:x:0:0', b':root:/roo', b't:/bin/bas', b'h\nbin:x:1:', b'1:bin:/bin']
>>>

class HBox4(QGridLayout):
    def __init__(self, parent=None):
        super(HBox4, self).__init__(parent)
        self.table = TableWidget()
        self.addWidget(self.table, *(0,0))
        self.addWidget(TabDemo(), *(0,1))
    def update(self,data):
        self.table.update(data)

class TableWidget(QTableWidget):
    def __init__(self, parent=None, data=[]):
        super(TableWidget, self).__init__(parent)
        #data = []
        self.setColumnCount(1)
        self.setRowCount(len(data))
        for i, entry in enumerate(data, start=1):
            self.setRowCount(i)
            item = QTableWidgetItem()
            item.setText(str(entry))
   def update(self,data):
        self.clearContents ()
        #тут очищаем таблицу, затем тот же код, что и в init
        self.setColumnCount(1)
        self.setRowCount(len(data))
        for i, entry in enumerate(data, start=1):
            self.setRowCount(i)
            item = QTableWidgetItem()
            item.setText(str(entry))

#
d = []
with open(file, 'r') as f:
    for i in f:
        print(i)
        d.append(i)

byte_count = 8
with open("myfile", "rb") as f:
    byte = f.read(byte_count)
    while byte != b"":
        # Do stuff with byte.

        byte = f.read(byte_count)

d = []
with open("file", "rb") as f:
    number = f.read(8)
    d.append(number)
    while number != "":
        number = f.read(8)
        d.append(number)