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How to fix “Attempted relative import in non-package” even with __init__.py
I'm trying to follow PEP 328 , with the following directory structure:
18 Answers
18
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布局列表框使用指导 · App Inventor 2 中文网
...入完整工程
第 2 步：了解界面和模板
第 3 步：完整代码块
第 4 步：按表专项测试
常见问题
工程校验与下一步
使用示例
手动设置行组件
事件处理
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How do you validate a URL with a regular expression in Python?
...n and have been beating my head against the following problem for the past 3 days.
12 Answers
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Getting list of parameter names inside python function [duplicate]
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333
Well we don't actually need inspect here.
>>> func = lambda x, y: (x, y)
>>>...
Why does += behave unexpectedly on lists?
...gt;> a1 = a2 = [1, 2]
>>> b1 = b2 = [1, 2]
>>> a1 += [3] # Uses __iadd__, modifies a1 in-place
>>> b1 = b1 + [3] # Uses __add__, creates new list, assigns it to b1
>>> a2
[1, 2, 3] # a1 and a2 are still the same list
>>> b2
[...
How to get the input from the Tkinter Text Widget?
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132
To get Tkinter input from the text box, you must add a few more attributes to the normal .get()...
How to check version of python modules?
...lar package you're interested in:
Linux:
$ pip freeze | grep lxml
lxml==2.3
Windows:
c:\> pip freeze | findstr lxml
lxml==2.3
For an individual module, you can try the __version__ attribute, however there are modules without it:
$ python -c "import requests; print(requests.__version__)"
2.14...
“Inner exception” (with traceback) in Python?
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138
Python 2
It's simple; pass the traceback as the third argument to raise.
import sys
class MyE...
How do I get list of methods in a Python class?
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347
An example (listing the methods of the optparse.OptionParser class):
>>> from optpar...
Catch a thread's exception in the caller thread in Python
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edited May 13 '10 at 20:54
community wiki
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