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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
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Let's get one thing out of the way first. The explanation that yield from g is equivalent to for v in g: yield v does not even begin to do justice to what yield from is all about. Because, let's face it, if all yield from does is expand the for loop, then it does not warrant adding yield from ...
`from … import` vs `import .` [duplicate]
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It depends on how you want to access the import when you refer to it.
from urllib import request
# access request directly.
mine = request()
import urllib.request
# used as urllib.request
mine = urllib.request()
You can also alias things yourself when you import for simplicity or to avoid ma...
What is the usefulness of `enable_shared_from_this`?
I ran across enable_shared_from_this while reading the Boost.Asio examples and after reading the documentation I am still lost for how this should correctly be used. Can someone please give me an example and explanation of when using this class makes sense.
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How to rsync only a specific list of files?
...rver. I figured rsync would be able to do this for me using the --include-from option. Without the --exclude="*" option, all the files in the directory are being synced, with the option, no files are.
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How does Duff's device work?
...ed]
do { // [skipped]
*to = *from++; // [skipped]
case 7: *to = *from++; // [skipped]
case 6: *to = *from++; // [skipped]
case 5: *to = *from++; // [skipped]
case 4: *to = *from++; // Start here. Copy 1 byte...
Remove a file from a Git repository without deleting it from the local filesystem
...ve added *log to my .gitignore , and now I want to remove the log files from my repository.
10 Answers
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Sending mail from Python using SMTP
I'm using the following method to send mail from Python using SMTP. Is it the right method to use or are there gotchas I'm missing ?
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Python module for converting PDF to text [closed]
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Try PDFMiner. It can extract text from PDF files as HTML, SGML or "Tagged PDF" format.
The Tagged PDF format seems to be the cleanest, and stripping out the XML tags leaves just the bare text.
A Python 3 version is available under:
https://github.com/pdfm...
Should I inherit from std::exception?
...ecommend that application-specific exception classes in C++ should inherit from std::exception . I'm not clear on the benefits of this approach.
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What's the correct way to sort Python `import x` and `from x import y` statements?
...sorting.So its all about choice what you use.
According to few references from reputable sites and repositories also popularity, Alphabetical ordering is the way.
for eg like this:
import httplib
import logging
import random
import StringIO
import time
import unittest
from nova.api import opensta...