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Apache Spark: map vs mapPartitions?
What's the difference between an RDD's map and mapPartitions method? And does flatMap behave like map or like mapPartitions ? Thanks.
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Why does Python print unicode characters when the default encoding is ASCII?
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Thanks to bits and pieces from various replies, I think we can stitch up an explanation.
By trying to print an unicode string, u'\xe9', Python implicitly try to encode that string using the encoding scheme currently stored in sys.std...
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
... assignment just copies the reference to the list, not the actual list, so both new_list and my_list refer to the same list after the assignment.
To actually copy the list, you have various possibilities:
You can use the builtin list.copy() method (available since Python 3.3):
new_list = old_lis...
How Python web frameworks, WSGI and CGI fit together
I have a Bluehost account where I can run Python scripts as CGI. I guess it's the simplest CGI, because to run I have to define the following in .htaccess :
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XPath: How to select elements based on their value?
I am new to using XPath and this may be a basic question. Kindly bear with me and help me in resolving the issue. I have an XML file like this:
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“Parameter” vs “Argument” [duplicate]
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A parameter is the variable which is part of the method’s signature (method declaration). An argument is an expression used when calling the method.
Consider the following code:
void Foo(int i, float f)
{
// Do things
}
void Bar()
{
in...
Why does javascript replace only first instance when using replace? [duplicate]
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You need to set the g flag to replace globally:
date.replace(new RegExp("/", "g"), '')
// or
date.replace(/\//g, '')
Otherwise only the first occurrence will be replaced.
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What is the pythonic way to unpack tuples? [duplicate]
...t = datetime.datetime(*t[0:7])
This is called unpacking a tuple, and can be used for other iterables (such as lists) too. Here's another example (from the Python tutorial):
>>> range(3, 6) # normal call with separate arguments
[3, 4, 5]
>>> args = [3, 6]
>>>...
FFmpeg C API documentation/tutorial [closed]
...e the FFmpeg C API. It seems that only command line documentation is available.
5 Answers
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Difference between parameter and argument [duplicate]
Is there a difference between a "parameter" and an "argument", or are they simply synonyms?
4 Answers
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