Popular recipes tagged "file" but not "python"

File browser for tkinter using idle GUI library (Python)

2017-04-03T13:37:34-07:00

Python recipe 580772 by Miguel Martínez López (browser, file, idlelib, tkinter).

Idle is installed by default on windows.

For Ubuntu, Linux Mint and Debian run:

  sudo apt-get install idle-python2.7

A tree structure is drawn on a Tkinter Canvas object. A tree item is an object with an icon and a text. The item maybe be expandable and/or editable. A tree item has two kind of icons: A normal icon and an icon when the item is selected. To create the tree structure, it's necessary to create a link between tree items, using a parent-child relationship.

The canvas is built using a idlelib.TreeWidget.ScrolledCanvas class. The frame attribute of this object contains a Frame Tkinter widget prepared for scrolling. This frame allocates a Tkinter Canvas and Tkinter Scrollbars. This is the signature:

   ScrolledCanvas(master, **options_for_the_tkinter_canvas)

It accepts exactly the same arguments than a Canvas widget.

A tree item should be a subclass of idlelib.TreeWidget.TreeItem.

The parent-child relationship between tree items is established using the idlelib.TreeWidget.TreeNode class.

This is the signature for TreeNode(canvas, parent, item):

canvas should be a ScrolledCanvas instance.
parent should be the parent item. Leave that to None to create a root node.
item should be the child item

FileTreeItem is a type of TreeItem. The only argument of a file tree item is a path.

Here there is an example of a custom tree item:

https://code.activestate.com/recipes/579077-bookmarks-browser-for-firefox/

To create your own tree items, it's required to subclass TreeItem. These are the methods that should be overrided:

GetText: It should return the text string to display.
GetLabelText: It should return label text string to display in front of text (Optional).
IsExpandable: It should return a boolean indicating whether the istem is expandable
IsEditable: It should return a boolean indicating whether the item's text may be edited.
SetText: Get the text to change if the item is is editable
GetIconName: Return name of icon to be displayed normally (Icons should be included in ICONDIR directory)
GetSelectedIconName: Return name of icon to be displayed when selected (Icons should be included in ICONDIR directory).
GetSubList: It should return a list of child items (Optional. If not defined, the element is not expandable)
OnDoubleClick: Called on a double-click on the item. (Optional)

Icons should be included in "Icons" subdirectory of path to idlelib library. If you want to use other path, just change ICONDIR variable to path to your icons:

 import idlelib
 idlelib.ICONDIR = "Your path to your icons"

Run this to find the path to idlelib module:

 python -c "import idlelib; print(idlelib.__file__)"

Recursive fc/diff for Windows, optionally copy missing/different files (Tcl)

2017-04-08T16:40:25-07:00

Tcl recipe 580776 by John Brearley (compare, file, tcl).

Utility to add recursive capability to fc.exe on Windows. Will optionally copy/update missing or older files as needed. If you have a diff.exe in your path, say from having installed TkDiff utility, the diff.exe will be used as the prirmary compare tool, with fc.exe as the backup tool.

Tkinter file autocomplete entry (Python)

2017-04-03T15:18:36-07:00

Python recipe 580771 by Miguel Martínez López (autocomplete, entry, file, tkinter). Revision 9.

I define a "File_Entry" widget to make more easier to the final user to write and search for a path. I am using my own version of combobox widget:

https://code.activestate.com/recipes/580770-combobox-autocomplete/

Context Manager for an Arbitrary Number of Files in Python (Python)

2017-03-13T13:27:50-07:00

Python recipe 580763 by Alfe (contextmanager, file, open). Revision 2.

The pattern using with together with open() to automatically close a file after leaving the context is well known. To open a fixed number you can simply nest these statements or use the comma notation. For having a context which represents an arbitrary number of open files you can use the ExitStack class, but only for Python 3.3+.

For other Python versions I'm using the following class which I named Files. The presented implementation is only for reading files (for keeping it clear). Extending it for having various file modes should not pose a problem.

Safely and atomically write to a file (Python)

2016-03-23T14:14:26-07:00

Python recipe 579097 by Steven D'Aprano (atomic, file, save). Revision 3.

Saving the user's data is risky. If you write to a file directly, and an error occurs during the write, you may corrupt the file and lose the user's data. One approach to prevent this is to write to a temporary file, then only when you know the file has been written successfully, over-write the original. This function returns a context manager which can make this more convenient.

Update: this now uses os.replace when available, and hopefully will work better on Windows.

Shortcut Utility (Python)

2015-03-29T20:45:57-07:00

Python recipe 579041 by FB36 (desktop, directories, directory, file, files, tkinter, ui, utilities, utility).

I dislike filling my desktop with shortcut icons in Windows. This code enables creating shortcuts in a CSV file.

SystemMutex (Python)

2015-01-09T10:14:15-08:00

Python recipe 578998 by Fabio Zadrozny (file, filelock, lock, mutex).

This module provides a way to create a mutex which is valid for the system (i.e.: it can be seen by multiple processes).

Note that the mutex is kept until release_mutex() is called or when it's garbage-collected.

Split file in place into two parts (Python)

2015-02-11T20:08:35-08:00

Python recipe 579025 by shavy89 (file, splitting). Revision 2.

Split file in place into two parts

Find Duplicate Files (Python)

2014-10-12T21:14:05-07:00

Python recipe 578950 by FB36 (dictionary, directories, directory, disk, file, files, utility).

Finds duplicate files which have same size and same content in the same directory or two different directories.

Python Awesome DD (Python)

2014-07-12T07:29:59-07:00

Python recipe 578907 by Mike 'Fuzzy' Partin (curses, dd, file, input, output, progress_bar). Revision 3.

Imagine if the *nix utilities 'dd', 'wget', and 'pv' had a baby. That baby would be named 'padd'. A 'dd' replacement (most commonly used options translate with no problem), that gives progress output like 'pv' and supports (currently) http(s) and ftp input sources, with more planned (sftp for one). Output support for ftp, sftp, and http(s) is also planned.

Composing a POSTable HTTP request with multipart/form-data Content-Type to simulate a form/file upload. (Python)

2014-03-08T17:34:38-08:00

Python recipe 578846 by István Pásztor (field, file, form, html, httpclient, mime, multipart, post, upload, web). Revision 5.

This code is useful if you are using a http client and you want to simulate a request similar to that of a browser that submits a form containing several input fields (including file upload fields). I've used this with python 2.x.

Wrap a a file-like object in another that calls a user callback whenever read() is called on it. (Python)

2013-09-25T01:54:53-07:00

Python recipe 578674 by Martin Miller (callback, file, oop, progress, upload).

Wraps a file-like object in another, but also calls a user callback with the number of bytes read whenever its read() method is called. Used for tracking upload progress, for example for a progress bar in a UI application.

Wrap a string in a file-like object that calls a user callback whenever read() is called on the stream (Python)

2013-09-22T21:48:03-07:00

Python recipe 578669 by Ben Hoyt (callback, file, progress, upload).

Wraps a string in a read-only file-like object, but also calls a user callback with the number of bytes read whenever read() is called on the stream. Used for tracking upload progress, for example for a progress bar in a UI application.

InMemoryZip class (Python)

2013-09-23T06:44:23-07:00

Python recipe 578667 by Thomas Lehmann (file, memory, path, zip).

Why implementing this?

transfering a file or a folder (including sub folders) to another machine
therefore zipping content to one compressed buffer
keeping the relating ZIP in memory only but ...
being able to save or load too
and being able to unzip again at target destination

Wav audio file dynamic range compressor (C)

2013-04-18T15:04:25-07:00

C recipe 578510 by Granning Stoline (audio, compressor, dynamic, file, range, wav). Revision 4.

Wav audio file dynamic range compressor

xdiff in python (Python)

2012-11-12T20:59:54-08:00

Python recipe 578324 by Hiro (file, process). Revision 2.

xdiff.py compares and output difference of file1 and file2. it finds out the lines that are unique in file1 and files2, the finding is written to file3 and file4 respectively.

Context manager to atomically replace a file (Python)

2012-06-17T12:09:49-07:00

Python recipe 578166 by Oren Tirosh (atomic, contextmanager, file, replace). Revision 3.

This context manager ensures that a file's content is either replaced atomically with new contents or left unchanged. An exception or other error will not leave it empty or with partial content.

Directory Pruner 4 (Python)

2012-06-06T22:00:00-07:00

Python recipe 578154 by Stephen Chappell (delete, directory, file, gui, utility). Revision 2.

Module providing GUI capability to prune any directory.

The code presented in this module is for the purposes of: (1) ascertaining the space taken up by a directory, its files, its sub-directories, and its sub-files; (2) allowing for the removal of the sub-files, sub-directories, files, and directory found in the first purpose; (3) giving the user a GUI to accomplish said purposes in a convenient way that is easily accessible.

make some file named year+month+day (Python)

2012-02-10T23:46:36-08:00

Python recipe 578036 by ryotaro goto (beginner, date, file, sys). Revision 6.

This program make some file named year+month+day How to use "python program argument example:argument=01,02,...,12 If you input 02,it will return files named 20120201,...,20120228

Tail a continuously growing file (like tail -f filename) (Python)

2011-05-20T16:32:59-07:00

Python recipe 577710 by Jason Morriss (file, rotate, tail).

This is my version of a "File Tail" class for Python3 (will not work on Python2 w/o a couple of modifications). My original inspiration came from the perl File::Tail module.

Transparently handles files that get rotated or truncated.

Does not take 100% CPU.
Does not take up much memory.
Is capable of handling any size log file.
Not tested on Windows

Example:

from filetail import FileTail
tail = FileTail("/var/log/syslog")
for line in tail:
    print(line, end="")