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Difference between open and codecs.open in Python
There are two ways to open a text file in Python:
8 Answers
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How to get a reference to current module's attributes in Python
...re it is defined, not the module
from which it is called).
http://docs.python.org/library/functions.html#globals
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UnicodeDecodeError when redirecting to file
...n a file. In order to be displayed or properly "understood" (by, say, the Python interpreter), streams of bytes are decoded into characters. A few encodings (UTF-8, UTF-16,…) are defined by Unicode for its list of characters (Unicode thus defines both a list of characters and encodings for these ...
How to check if a python module exists without importing it
I need to know if a python module exists, without importing it.
13 Answers
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How to check if a string in Python is in ASCII?
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Inefficient or not, the more pythonic method is the try/except.
– Jeremy Cantrell
Oct 14 '08 at 14:38
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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...t N>
class array;
}
第一个模板参数T指明了array中存放的数据类型；
第二个非类型模板参数指明了array的固定大小。
array的接口
constructors
构造函数
说明
arrary<T, N> c
默认构造函数，N个元素全部使用“...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
Are there any Ruby / Python features that are blocking implementation of optimizations (e.g. inline caching ) V8 engine has?
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What's the difference between eval, exec, and compile?
I've been looking at dynamic evaluation of Python code, and come across the eval() and compile() functions, and the exec statement.
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How to install MySQLdb (Python data access library to MySQL) on Mac OS X?
I'm a Python newbie, but I've just spent a day working out how to get MySQLdb working properly, and the universe according to google includes numerous references to what a PITA it is, and an inordinate number of guides that seem to be outdated. Given that this site is intended to address these sort...
How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
I have two Python dictionaries, and I want to write a single expression that returns these two dictionaries, merged (i.e. taking the union). The update() method would be what I need, if it returned its result instead of modifying a dictionary in-place.
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