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How exactly do Django content types work?
...Django's content types. It feels very hackish and, ultimately, against how Python tends to do things. That being said, if I'm going to use Django then I have to work within the confines of the framework.
...
MQTT客户端内置版使用指导 · App Inventor 2 中文网
...保留消息。
电脑端与手机互发
安装 Python 3.9+，执行 python -m pip install paho-mqtt。将下面保存为 mqtt-peer.py，把命令中主题替换为手机界面显示的完整独立主题；例如：
python mqtt-peer.py fun123/component-case/你的客户端I...
How to duplicate virtualenv
...e. A requirements file is basically a file that contains a list of all the python packages you want to install (or have already installed in case of file generated by pip), and what versions they're at.
To generate a requirements file, go into your original virtualenv, and run:
pip freeze > req...
How to find list intersection?
...
this seems the most pythonic which keeps order. not sure why this isn't upvoted higher!! thx for the great solution!
– Bill D
Mar 1 '18 at 6:15
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Is there any difference between “foo is None” and “foo == None”?
... a special builtin method that determines how == is handled when used on a Python object. Here we have overridden it so that when == is used on objects of type Foo it always returns true. There isn't an equivalent method for the is operator and so the behaviour of is cannot be changed in the same wa...
Renaming a virtualenv folder without breaking it
...e scripts to use
activate_this.py instead of using the
location of the Python interpreter to
select the environment.
Note: you must run this after you've
installed any packages into the
environment. If you make an
environment relocatable, then install
a new package, you must run v...
Find which version of package is installed with pip
...w Jinja2
---
Name: Jinja2
Version: 2.7.3
Location: /path/to/virtualenv/lib/python2.7/site-packages
Requires: markupsafe
In older versions, pip freeze and grep should do the job nicely.
$ pip freeze | grep Jinja2
Jinja2==2.7.3
...
What is the difference between `sorted(list)` vs `list.sort()`?
...
In general, when a python function returns None, it is a sign, that the operations are done in place, that's why, when you want to print list.sort() it returns None.
– user1767754
Nov 19 '17 at 9:34
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How exactly does a generator comprehension work?
...ne question here. I used next(gen_name) to get the result and it worked in Python 3. Is there any specific scenario where we need to use __next__()?
– Ankit Vashistha
May 30 '18 at 6:12
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How do I activate a virtualenv inside PyCharm's terminal?
... has nothing to do with the OP's question. The problem is terminal not the Python interpreter. The venv integration has been there way before PyCharm 4. Your answer works though.
– Sam R.
Aug 3 '15 at 17:46
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