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How to escape special characters in building a JSON string?
...d any JSON parser will choke on it. (Certainly JavaScript's JSON.parse and Python's json.loads do.)
– Mark Amery
Jan 31 '15 at 16:26
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how perform grep operation on all files in a directory
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In Linux, I normally use this command to recursively grep for a particular text within a dir
grep -rni "string" *
where,
r = recursive i.e, search subdirectories within the current directory
n = to print the line numbers to...
Difference between len() and .__len__()?
...eaning would be clear to beginners but a.len() would not be as clear. When Python started __len__ didn't even exist and len was a special thing that worked with a few types of objects. Whether or not the situation this leaves us makes total sense, it's here to stay.
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How do I handle the window close event in Tkinter?
How do I handle the window close event (user clicking the 'X' button) in a Python Tkinter program?
6 Answers
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How do I resize an image using PIL and maintain its aspect ratio?
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The Python 3 documentation for PIL says that thumbnail only works if the resulting image is smaller than the original one. Because of that I would guess that using resize is the better way.
– So S
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AWS ssh access 'Permission denied (publickey)' issue [closed]
...her instances, you might have to use ec2-user instead of ubuntu.
Most EC2 Linux images I've used only have the root user created by default.
See also: http://www.youtube.com/watch?v=WBro0TEAd7g
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csv.Error: iterator should return strings, not bytes
... best practices around it. I do that fairly consistently. If you're new to Python, and you get stuck in an interactive session with a file you can't do anything with, you would have appreciated my advice...
– Aaron Hall♦
Mar 9 '19 at 13:04
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How can I dynamically create derived classes from a base class
...ames in the naming scope --
now, that is not considered a good practice in Python - you either have
variable names, known at coding time, or data - and names learned in runtime
are more "data" than "variables" -
So, you could just add your classes to a dictionary and use them from there:
name = "...
How to best position Swing GUIs?
...puts 3 GUIs into the default positions as chosen by the OS - on Windows 7, Linux with Gnome & Mac OS X.
(3 lots of) 3 GUIs neatly stacked. This represents 'the path of least surprise' for the end user, since it is how the OS might position 3 instances of the default plain-text editor (or a...
What does “rc” mean in dot files
In my home folder in Linux I have several config files that have "rc" as a file name extension:
5 Answers
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