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Calling a function of a module by using its name (a string)
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@glarrain As long as you're ok with only support 2.7 and up.
– Xiong Chiamiov
Sep 14 '13 at 16:54
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Why use argparse rather than optparse?
I noticed that the Python 2.7 documentation includes yet another command-line parsing module. In addition to getopt and optparse we now have argparse .
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Dealing with multiple Python versions and PIP?
...ion}:
$ pip-2.5 install myfoopackage
$ pip-2.6 install otherpackage
$ pip-2.7 install mybarpackage
EDIT: pip changed its schema to use pipVERSION instead of pip-VERSION in version 1.5. You should use the following if you have pip >= 1.5:
$ pip2.6 install otherpackage
$ pip2.7 install mybarp...
How do I install pip on macOS or OS X?
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Installed /Library/Python/2.7/site-packages/pip-6.0.6-py2.7.egg -- what about my python3 installation? Does this just mean that pip uses my python2 installation?
– temporary_user_name
Jan 8 '15 at 22:37
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一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
一文了解大数据领域创业的机会与方向跨界和融合是大数据思维里最重要的一环，大数据就像是钱一样，你得让它流动起来才能产生价值。在这篇大数据行业的SWOT分析文章中，也许可以找到你想了解的大数据行业创业环境、问...
In Python, how do you convert a `datetime` object to seconds?
...econds. Subtracting two dates gives a timedelta object, which as of Python 2.7 has a total_seconds() function.
>>> (t-datetime.datetime(1970,1,1)).total_seconds()
1256083200.0
The starting date is usually specified in UTC, so for proper results the datetime you feed into this formula sho...
bash: pip: command not found
...lso, there is no /Library/Frameworks/Python.framework/Versions/2.6/ - only 2.7, and the only appeared after I ran the Python 2.7 installer moments ago. Does this mean the default Python 2.6 that comes with Mac doesn't conform to whatever ever standard file locations you assumed?
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How to change the CHARACTER SET (and COLLATION) throughout a database?
...TER DATABASE <database_name> CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change table collation:
ALTER TABLE <table_name> CONVERT TO CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change column collation:
ALTER TABLE <table_name> MODIFY <column_name> VARCHAR(255) CHARACT...
How to import a module given its name as string?
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With Python older than 2.7/3.1, that's pretty much how you do it.
For newer versions, see importlib.import_module for Python 2 and and Python 3.
You can use exec if you want to as well.
Or using __import__ you can import a list of modules by do...
Store query result in a variable using in PL/pgSQL
...on't leave out the table name prefix on test_table.name or you'll get complaints about an ambiguous reference.
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