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How to sum all the values in a dictionary?
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phihag's answer (and similar ones) won't work in python3.
For python 3:
d = {'key1': 1,'key2': 14,'key3': 47}
sum(list(d.values()))
Update!
There are complains that it doesn't work! I just attach a screenshot from my terminal. Could be some mismatch in versions etc.
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NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一篇关于AT&T的汇编入门文章)
3.2 如何安装NASM？
下载地址：http://www.nasm.us/
可以下载源码包或者rpm包，rpm –iUh *.rpm
四、Linux汇编介绍
4.1 DOS和Linux汇编主要不同的地方
DOS汇编中，大部分工作依靠21号中断(int ...
How to update Python?
...s to point to dominant (e.g. 2.7), shortcut to other (e.g. in BASH $ ln /c/Python33/python.exe python3).
The answer depends:
If OP has 2.7.x and wants to install newer version of 2.7.x, then
if using MSI installer from the official Python website, just install over old version, installer will ...
How do you extract a column from a multi-dimensional array?
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I can't find any documentation for arange() in Python3 outside of numpy. Anyone?
– Kevin W Matthews
Aug 17 '19 at 21:45
add a comment
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Loop backwards using indices in Python?
...are multiple ways.
Better Way
For pythonic way, check PEP 0322.
This is Python3 pythonic example to print from 100 to 0 (including 100 & 0).
for i in reversed(range(101)):
print(i)
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Why doesn't print work in a lambda?
... a SyntaxError, python doesn't let you assign a value to print in 2.xx; in python3 you could say
lambda: print('hi')
and it would work because they've changed print to be a function instead of a statement.
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numpy matrix vector multiplication [duplicate]
...r Solutions
Also know there are other options:
As noted below, if using python3.5+ the @ operator works as you'd expect:
>>> print(a @ b)
array([16, 6, 8])
If you want overkill, you can use numpy.einsum. The documentation will give you a flavor for how it works, but honestly, I didn't...
【解决】Python：ModuleNotFoundError: No module named \'google.protobuf...
...入dist-packages目录，刷新__init__.py文件：
cd /usr/local/lib/python3/dist-packages
touch google/__init__.py
参考资料：https://stackoverflow.com/questions/38680593/importerror-no-module-named-google-protobuf
python,protobuf
How can I check the extension of a file?
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Use pathlib From Python3.4 onwards.
from pathlib import Path
Path('my_file.mp3').suffix == '.mp3'
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Python setup.py develop vs install
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It works with python3, but don't forget to remove any current pip installation you may have, as they will clash together (it happened to me at the moment).
– Léo Germond
Apr 7 '17 at 12:38
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