大约有 16,000 项符合查询结果（耗时：0.0204秒） [XML]
Pandas aggregate count distinct
...2M
%time _=g.agg({"id": lambda x: x.nunique()})
CPU times: user 3min 3s, sys: 2.94 s, total: 3min 6s
Wall time: 3min 20s
%time _=g.agg({"id": pd.Series.nunique})
CPU times: user 3min 2s, sys: 2.44 s, total: 3min 4s
Wall time: 3min 18s
%time _=g.agg({"id": "nunique"})
CPU times: user 14 s, sys: 4...
How to configure Git post commit hook
...re is the code of my working post-receive hook:
#!/usr/bin/python
import sys
from subprocess import call
if __name__ == '__main__':
for line in sys.stdin.xreadlines():
old, new, ref = line.strip().split(' ')
if ref == 'refs/heads/master':
print "===================...
How to join components of a path when you are constructing a URL in Python
...n the current os. posixpath is the underlying module that is used on posix systems under the namespace os.path:
>>> os.path.join is posixpath.join
True
>>> posixpath.join('/media/', 'js/foo.js')
'/media/js/foo.js'
So you can just import and use posixpath.join instead for urls, w...
How do I get the path of the current executed file in Python?
...odules are built-in to the interpreter, e.g., by py2exe
return hasattr(sys, "frozen")
def module_path():
encoding = sys.getfilesystemencoding()
if we_are_frozen():
return os.path.dirname(unicode(sys.executable, encoding))
return os.path.dirname(unicode(__file__, encoding))
...
What is the best way to exit a function (which has no return value) in python before the function en
...
@TomSawyer to stop a Python program early, do import sys first and then sys.exit() if you want to exit but report success or sys.exit("some error message to print to stderr").
– Boris
Mar 4 at 17:07
...
How to get the separate digits of an int number?
...
Convert it to String and use String#toCharArray() or String#split().
String number = String.valueOf(someInt);
char[] digits1 = number.toCharArray();
// or:
String[] digits2 = number.split("(?<=.)");
In case you're alre...
Converting Long to Date in Java returns 1970
...00, 1220832000, 1221436800...) which I downloaded from web service. I must convert it to Dates. Unfortunately this way, for example:
...
Get path of executable
...riousguy I'm not sure I understand you; I'm pretty sure that's the whole point of this question :)
– Ben Hymers
Dec 8 '11 at 22:08
6
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Scala best way of turning a Collection into a Map-by-key?
...h a variable number of tuples. So use the map method on the collection to convert it into a collection of tuples and then use the : _* trick to convert the result into a variable argument.
scala> val list = List("this", "maps", "string", "to", "length") map {s => (s, s.length)}
list: List[(j...
Converting SVG to PNG using C# [closed]
I've been trying to convert SVG images to PNG using C#, without having to write too much code. Can anyone recommend a library or example code for doing this?
...