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No Multiline Lambda in Python: Why not?
I've heard it said that multiline lambdas can't be added in Python because they would clash syntactically with the other syntax constructs in Python. I was thinking about this on the bus today and realized I couldn't think of a single Python construct that multiline lambdas clash with. Given that ...
CSV file written with Python has blank lines between each row
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In Python 2, open outfile with mode 'wb' instead of 'w'. The csv.writer writes \r\n into the file directly. If you don't open the file in binary mode, it will write \r\r\n because on Windows text mode will translate each \n in...
What is the most efficient string concatenation method in python?
Is there any efficient mass string concatenation method in Python (like StringBuilder in C# or StringBuffer in Java)? I found following methods here :
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pip installing in global site-packages instead of virtualenv
...es folder instead of the one in the virtualenv folder. Here's how I set up Python3 and virtualenv on OS X Mavericks (10.9.1):
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Import error: No module name urllib2
...mentation:
The urllib2 module has been split across several modules in Python 3 named urllib.request and urllib.error. The 2to3 tool will automatically adapt imports when converting your sources to Python 3.
So you should instead be saying
from urllib.request import urlopen
html = urlopen("ht...
Chain-calling parent initialisers in python [duplicate]
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The way you are doing it is indeed the recommended one (for Python 2.x).
The issue of whether the class is passed explicitly to super is a matter of style rather than functionality. Passing the class to super fits in with Python's philosophy of "explicit is better than implicit".
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Simpler way to put PDB breakpoints in Python code?
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You can run your program into pdb from the command line by running
python -m pdb your_script.py
It will break on the 1st line, then you'll be able to add a breakpoint wherever you want in your code using the break command, its syntax is:
b(reak) [[filename:]lineno | function[, conditio...
How do you calculate program run time in python? [duplicate]
How do you calculate program run time in python?
5 Answers
5
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解决python3报错：TypeError: a bytes-like object is required, not \'str...
解决python3报错：TypeError: a bytes-like object is required, not 'str'问题原因：python3和Python2在套接字返回值解码上有区别，也就是说报错的这段代码在python2上可以正常使用。解决思路：python bytes和str两种类型可以通过函数encode()和decode() ...
【生成Python】AppInventor2中文网已支持代码块转换Python源码！ - App Inv...
--------------开发Python代码转换功能的缘由--------------------
某电教馆“古老的”（至少10年之前）的招标需求，部分节选如下：
Python代码转换功能就属于其中一个，可不止这一个需求引人注意，还有好几个细节就算放在2025年的...