Python: How can I obtain the filesize of a selected file in PyQt5?

Question

In PyQt5, it is possible to select a file using QFileDialog. I understand how to obtain the file name, but how might one obtain the filesize?

If you have a filename, you can get file size via [methods from python library](https://stackoverflow.com/questions/2104080/how-to-check-file-size-in-python). Or you need something else? — Stanislav Ivanov, Aug 13 '17 at 19:58
How does one in general get the size of a file? I guess that would also work here. — NoDataDumpNoContribution, Aug 17 '17 at 10:45

eyllanesc · Accepted Answer · 2017-08-13T20:20:46.870

4

Without opening the file:

You must use the QFileInfo class and the size() method:

filename, _ = QFileDialog.getOpenFileName(None, 'Open file')
if filename != "":
    info = QFileInfo(filename)
    size = info.size()
    print(info)

Opening the file:

filename, _ = QFileDialog.getOpenFileName(None, 'Open file')
if filename != "":
    file = QFile(filename)
    if file.open(QFile.ReadOnly):
        print(file.size())

edited Aug 13 '17 at 20:20

answered Aug 13 '17 at 20:02

eyllanesc

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Better than a few previous answers. Implementation is something that helps more than simple explanation. – Blue Square Aug 13 '17 at 20:18
I recommend taking the time to see if the answer they propose is correct. Comments are not answers. – eyllanesc Aug 13 '17 at 20:22
Thanks, I'm new to Stack Overflow. – Blue Square Aug 13 '17 at 20:38

score 1 · Answer 2 · answered Aug 13 '17 at 19:59

1

From the documentation:

The file dialog has two view modes ... Detail also displays a list of file and directory names, but provides additional information alongside each name, such as the file size and modification date. Set the mode with setViewMode():

dialog.setViewMode(QFileDialog::Detail);

answered Aug 13 '17 at 19:59

Milk

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Ok, then you want to use `QFileInfo` on the filename – Milk Aug 13 '17 at 20:03

Python: How can I obtain the filesize of a selected file in PyQt5?

2 Answers2