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Parsing JSON with Unix tools
...as well:
Python 3:
curl -s 'https://api.github.com/users/lambda' | \
python3 -c "import sys, json; print(json.load(sys.stdin)['name'])"
Python 2:
export PYTHONIOENCODING=utf8
curl -s 'https://api.github.com/users/lambda' | \
python2 -c "import sys, json; print json.load(sys.stdin)['name...
How can I extract the folder path from file path in Python?
...hould consider using pathlib for new development. It is in the stdlib for Python3.4, but available on PyPI for earlier versions. This library provides a more object-orented method to manipulate paths <opinion> and is much easier read and program with </opinion>.
>>> import pa...
How to remove a key from a Python dictionary?
...])
[1, 3, None] # pop returns
>>> myDict
{'b': 2, 'd': 4}
or in python3, you must use a list comprehension instead:
[myDict.pop(x, None) for x in ['a', 'c', 'e']]
It works. And 'e' did not cause an error, even though myDict did not have an 'e' key.
...
what is the difference between 'transform' and 'fit_transform' in sklearn
...ea2aff> in <module>()
----> 1 pc2.transform(X)
/usr/local/lib/python3.4/dist-packages/sklearn/decomposition/pca.py in transform(self, X, y)
714 # XXX remove scipy.sparse support here in 0.16
715 X = atleast2d_or_csr(X)
--> 716 if self.mean_ is not None...
深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
... ISR 能正常工作了，我提供了完整的示例源码和磁盘映像下载：interrupt_demo
2. 保护模式下的中断机制
引入保护模式后，情形变得复杂多了，实施了权限控制机制，为了支持权限的控制增添了几个重要的数据结构，下面是与中...
UnicodeEncodeError: 'charmap' codec can't encode - character maps to , print function [du
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@MartijnPieters if you click the link then you see Python3.6 recommendation.
– jfs
Jan 13 '17 at 17:52
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Install specific git commit with pip
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For me (pip 9.0.1 in python3.5 virtualenv ) it didn't work : pip install -r requirements.txt raised 'Could not detect requirement name, please specify one with #egg='. But it worked with the format '-e git+github.com/owner/repository.git#egg=bran...
Python TypeError: not enough arguments for format string
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For python3 this "solution" is wrong -> Invalid syntax
– JonyD
Jun 17 '19 at 16:44
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Plot a bar using matplotlib using a dictionary
... penultimate line should read plt.xticks(range(len(D)), list(D.keys())) in python3, because D.keys() returns a generator, which matplotlib cannot use directly.
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How to install packages offline?
...on 3. you can create python 3 virtualenv with this command.
virtualenv -p python3 envname
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