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vim line numbers - how to have them on by default?
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vim .vimrc and add the commands you want at open.
Here's a site that explains the vimrc and how to use it.
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ContinuousSpeech 连续语音识别扩展：持续语音识别无需重复启动 · App Inventor 2 中文网
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How do I check whether a file exists without exceptions?
...odule offers an object-oriented approach (backported to pathlib2 in Python 2.7):
from pathlib import Path
my_file = Path("/path/to/file")
if my_file.is_file():
# file exists
To check a directory, do:
if my_file.is_dir():
# directory exists
To check whether a Path object exists indepen...
Remove an item from a dictionary when its key is unknown
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I believe dictionary comprehensions were added in Python 2.7.
– mithrandi
Mar 27 '11 at 5:58
2
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ComponentGroup 组件组扩展：监控内容变化和批量启用禁用组件 · App Inventor 2 中文网
... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
How do I get the full path of the current file's directory?
...is in a file.
References
pathlib in the python documentation.
os.path 2.7, os.path 3.8
os.getcwd 2.7, os.getcwd 3.8
what does the __file__ variable mean/do?
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How do I install Python packages on Windows?
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The above worked for me (Windows7 x64, python 2.7) but to install pip I had to follow the instructions @ pip.pypa.io/en/latest/installing.html
– Paolo Stefan
Aug 7 '14 at 7:56
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__lt__ instead of __cmp__
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In Python 2.7+/3.2+ you can use functools.total_ordering instead of building your own ComparableMixim. As suggested in jmagnusson's answer
– Day
Jun 28 '12 at 16:51
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sprintf like functionality in Python
...u are looking for, along with its mini-language.
Silly example for python 2.7 and up:
>>> print "{} ...\r\n {}!".format("Hello", "world")
Hello ...
world!
For earlier python versions: (tested with 2.6.2)
>>> print "{0} ...\r\n {1}!".format("Hello", "world")
Hello ...
world!
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how does multiplication differ for NumPy Matrix vs Array classes?
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The main reason to avoid using the matrix class is that a) it's inherently 2-dimensional, and b) there's additional overhead compared to a "normal" numpy array. If all you're doing is linear algebra, then by all means, feel free t...