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What exactly are iterator, iterable, and iteration?
...ich defines a __getitem__ method that can take sequential indexes starting from zero (and raises an IndexError when the indexes are no longer valid). So an iterable is an object that you can get an iterator from.
An iterator is an object with a next (Python 2) or __next__ (Python 3) method.
Whene...
What is the simplest way to get indented XML with line breaks from XmlDocument?
When I build XML up from scratch with XmlDocument , the OuterXml property already has everything nicely indented with line breaks. However, if I call LoadXml on some very "compressed" XML (no line breaks or indention) then the output of OuterXml stays that way. So ...
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What is the best practice for dealing with passwords in git repositories?
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The typical way to do this is to read the password info from a configuration file. If your configuration file is called foobar.config, then you would commit a file called foobar.config.example to the repository, containing sample data. To run your program, you would create a local...
Why is it recommended to have empty line in the end of a source file?
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Apart from the fact that it is a nicer cursor position when you move to the end of a file in a text editor.
Having a newline at the end of the file provides a simple check that the file has not been truncated.
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How to make a Python script run like a service or daemon in Linux
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Here's a nice class that is taken from here:
#!/usr/bin/env python
import sys, os, time, atexit
from signal import SIGTERM
class Daemon:
"""
A generic daemon class.
Usage: subclass the Daemon class and override the run() method
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Squash my last X commits together using Git
...<after-this-commit> is either the SHA1 hash or the relative location from the HEAD of the current branch from which commits are analyzed for the rebase command. For example, if the user wishes to view 5 commits from the current HEAD in the past the command is git rebase -i HEAD~5.
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How to get a password from a shell script without echoing
...chars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name ...]
Read a line from the standard input and split it into fields.
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-p prompt output the string PROMPT without a trailing newline before
attempting to read
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-s do not echo input coming from a terminal
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Parse date string and change format
... without having to specify the format like you do with datetime.strptime.
from dateutil.parser import parse
dt = parse('Mon Feb 15 2010')
print(dt)
# datetime.datetime(2010, 2, 15, 0, 0)
print(dt.strftime('%d/%m/%Y'))
# 15/02/2010
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Ignore .pyc files in git repository
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Put it in .gitignore. But from the gitignore(5) man page:
· If the pattern does not contain a slash /, git treats it as a shell
glob pattern and checks for a match against the pathname relative
to the location of the .gitignore fi...
Token Authentication vs. Cookies
...kie in every response back to the client. This means the next request made from the client will include this cookie and will thus be recognized by the server. This way the server can maintain a session with the stateless client, knowing mostly everything about the app's state, but stored in the serv...