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Check if Python Package is installed
What's a good way to check if a package is installed while within a Python script? I know it's easy from the interpreter, but I need to do it within a script.
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how to concatenate two dictionaries to create a new one in Python? [duplicate]
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Slowest and doesn't work in Python3: concatenate the items and call dict on the resulting list:
$ python -mtimeit -s'd1={1:2,3:4}; d2={5:6,7:9}; d3={10:8,13:22}' \
'd4 = dict(d1.items() + d2.items() + d3.items())'
100000 loops, best of 3: 4.93 usec pe...
Run function from the command line
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With the -c (command) argument (assuming your file is named foo.py):
$ python -c 'import foo; print foo.hello()'
Alternatively, if you don't care about namespace pollution:
$ python -c 'from foo import *; print hello()'
And the middle ground:
$ python -c 'from foo import hello; print hello...
How do I install the yaml package for Python?
I have a Python program that uses YAML. I attempted to install it on a new server using pip install yaml and it returns the following:
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What is the current choice for doing RPC in Python? [closed]
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XML-RPC is part of the Python standard library:
Python 2: xmlrpclib and SimpleXMLRPCServer
Python 3: xmlrpc (both client and server)
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How can I make a Python script standalone executable to run without ANY dependency?
I'm building a Python application and don't want to force my clients to install Python and modules.
19 Answers
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What is the naming convention in Python for variable and function names?
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See Python PEP 8: Function and Variable Names:
Function names should be lowercase, with words separated by underscores as necessary to improve readability.
Variable names follow the same convention as function names.
mixedCase i...
Disable output buffering
Is output buffering enabled by default in Python's interpreter for sys.stdout ?
16 Answers
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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“...
Stripping everything but alphanumeric chars from a string in Python
...the best way to strip all non alphanumeric characters from a string, using Python?
11 Answers
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