大约有 667 项符合查询结果（耗时：0.0120秒） [XML]
Determining if an Object is of primitive type
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This wasn't added until v3.1, your link reflected the 2.5 API. I've corrected it.
– javamonkey79
Sep 13 '12 at 6:40
8
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How can I check for NaN values?
... warning: quoting Bear's comment below "For people stuck with python <= 2.5. Nan != Nan did not work reliably. Used numpy instead." Having said that, I've not actually ever seen it fail.
– mavnn
Jan 26 '10 at 13:18
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How to pick just one item from a generator?
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Everytime you would like an item, use
next(g)
(or g.next() in Python 2.5 or below).
If the generator exits, it will raise StopIteration. You can either catch this exception if necessary, or use the default argument to next():
next(g, default_value)
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When should iteritems() be used instead of items()?
...he six library helps with writing code that is compatible with both python 2.5+ and python 3. It has an iteritems method that will work in both python 2 and 3. Example:
import six
d = dict( foo=1, bar=2 )
for k, v in six.iteritems(d):
print(k, v)
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Getting SyntaxError for print with keyword argument end=' '
...gic with the output.
Of course in somewhat recent versions of Python 2.x (2.5 should have it, not sure about 2.4), you can use the __future__ module to enable it in your script file:
from __future__ import print_function
The same goes with unicode_literals and some other nice things (with_statem...
How to use NSJSONSerialization
...requests.
NSString *urlString = @"http://api.openweathermap.org/data/2.5/weather?q=London,uk"; // The Openweathermap JSON responder
NSURL *url = [[NSURL alloc]initWithString:urlString];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLResponse *response;
N...
Getting MAC Address
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Python 2.5 includes an uuid implementation which (in at least one version) needs the mac address. You can import the mac finding function into your own code easily:
from uuid import getnode as get_mac
mac = get_mac()
The return ...
Git in Powershell saying 'Could not find ssh-agent'
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With the advent of the 64-bit git 2.5 (released yesterday), these aliases will need to be updated to point to ${env:ProgramFiles}\git\usr\bin\ instead for 64-bit systems.
– Chester Husk
Aug 19 '15 at 16:26
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How can I check if my python object is a number? [duplicate]
... Thanks, this is what ended up working for me in Jython (which is python 2.5 so it doesn't have the 'numbers' package). And yes I have a real reason to break duck typing; I need to treat strings and numbers differently.
– Neal Ehardt
Nov 15 '10 at 18:45
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Apply a function to every row of a matrix or a data frame
...ntile, probs=c(.25,.5, .75), na.rm=TRUE)
[,1] [,2] [,3] [,4] [,5]
25% 2.5 2 3.5 3.5 1.75
50% 3.0 2 4.0 4.0 3.00
75% 4.0 3 4.5 4.5 4.00
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