大约有 8,700 项符合查询结果（耗时：0.0225秒） [XML]
Binary Data in JSON String. Something better than Base64
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Python 3.4 includes base64.b85encode() and b85decode() now. A simple encode+decode timing measurement shows that b85 is more than 13 times slower than b64. So we have a 7% size win, but 1300% performance loss.
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Match linebreaks - \n or \r\n?
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In Python:
# as Peter van der Wal's answer
re.split(r'\r\n|\r|\n', text, flags=re.M)
or more rigorous:
# https://docs.python.org/3/library/stdtypes.html#str.splitlines
str.splitlines()
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What's is the difference between train, validation and test set, in neural networks?
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its python :x i just cant get a stop criteria.. the values converge.. but always with some flutuation..
– Daniel
Jun 6 '10 at 15:42
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How to display full (non-truncated) dataframe information in html when converting from pandas datafr
...d.set_option('display.max_colwidth', -1)
set_option docs
For example, in iPython, we see that the information is truncated to 50 characters. Anything in excess is ellipsized:
If you set the display.max_colwidth option, the information will be displayed fully:
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All falsey values in JavaScript
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touché. it's a value you might expect to be falsey and isn't, which is still worth being aware of, and I think, merits mention on a comprehensive list
– MrMcPlad
Oct 4 '17 at 21:43
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Stop pip from failing on single package when installing with requirements.txt
...put your requirements.txt file in it.
Copy the code above and save it as a python file in the same directory. Remember to use .py extension, for instance, install_packages.py
Run this file using a cmd: python install_packages.py
All the packages mentioned will be installed in one go without stopping...
How to save username and password with Mercurial?
...p and running on Ubuntu in about 2 minutes.
>> sudo apt-get install python-pip
>> sudo pip install keyring
>> sudo pip install mercurial_keyring
**Edit your .hgrc file to include the extension**
[extensions]
mercurial_keyring =
https://www.mercurial-scm.org/wiki/KeyringExtensi...
Why does C++ compilation take so long?
...nificantly longer to compile a C++ file than it would to run a normal size Python script. I'm currently using VC++ but it's the same with any compiler. Why is this?
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Verify if a point is Land or Water in Google Maps
...o avoid calls to possibly costly external APIs. Here is my shot at this in python, using the python example mentionned by TomSchober. Basically it looks up the coordinates on a pre-made 350MB file containing all land coordinates, and if the coordinates exist in there, it prints them.
import ogr
fro...
Progress indicator during pandas operations
...For recent syntax recommendation, see tqdm Pandas documentation here: pypi.python.org/pypi/tqdm#pandas-integration
– Manu CJ
Nov 27 '17 at 10:11
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