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Changes in import statement python3
...─ derived.py
Now, your derived.py requires something from base.py. In Python 2, you could do it like this (in derived.py):
from base import BaseThing
Python 3 no longer supports that since it's not explicit whether you want the 'relative' or 'absolute' base. In other words, if there was a Pyt...
绘画动画组件 · App Inventor 2 中文网
... 球形精灵
可以放置在 画布 上的圆形“精灵”，它可以对触摸和拖动做出反应，
与其他精灵（图像精灵 和其他 球形精灵）及画布的边缘进行交互，并根据其属性值移动。
例如，让一个球形精灵每 500 毫秒（半秒）向画布的...
How do I determine if my python shell is executing in 32bit or 64bit?
...
One way is to look at sys.maxsize as documented here:
$ python-32 -c 'import sys;print("%x" % sys.maxsize, sys.maxsize > 2**32)'
('7fffffff', False)
$ python-64 -c 'import sys;print("%x" % sys.maxsize, sys.maxsize > 2**32)'
('7fffffffffffffff', True)
sys.maxsize was introd...
What's the function like sum() but for multiplication? product()?
Python's sum() function returns the sum of numbers in an iterable.
8 Answers
8
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What is sys.maxint in Python 3?
...resent a maximum integer, and I've read to use "sys.maxint" . However, in Python 3 when I call it I get:
6 Answers
...
django import error - No module named core.management
...tting this error, look at your manage.py.
The first line should define the python executable used to run the script.
This should be the path to your virtualenv's python, but it is something wrong like /usr/bin/python, which is not the same path and will use the global python environment (and package...
Java “Virtual Machine” vs. Python “Interpreter” parlance?
It seems rare to read of a Python "virtual machine" while in Java "virtual machine" is used all the time.
13 Answers
...
Standard Android Button with a different color
...sily. Put something like the following code in a file named custom_button.xml and then set background="@drawable/custom_button" in your button view:
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:st...
What is Python buffer type for?
There is a buffer type in python, but I don't know how can I use it.
2 Answers
2
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Python extending with - using super() Python 3 vs Python 2
...
super() (without arguments) was introduced in Python 3 (along with __class__):
super() -> same as super(__class__, self)
so that would be the Python 2 equivalent for new-style classes:
super(CurrentClass, self)
for old-style classes you can always use:
class Cl...