大约有 16,000 项符合查询结果（耗时：0.0570秒） [XML]
Is there a difference between “==” and “is”?
...
is will return True if two variables point to the same object, == if the objects referred to by the variables are equal.
>>> a = [1, 2, 3]
>>> b = a
>>> b is a
True
>>> b == a
True
# Make a new copy of list `a` via the slice ...
How to convert number to words in java
We currently have a crude mechanism to convert numbers to words (e.g. using a few static arrays) and based on the size of the number translating that into an english text. But we are running into issues for numbers which are huge.
...
In Python, how can you load YAML mappings as OrderedDicts?
...
The yaml module allow you to specify custom 'representers' to convert Python objects to text and 'constructors' to reverse the process.
_mapping_tag = yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG
def dict_representer(dumper, data):
return dumper.represent_dict(data.iteritems())
...
Proper indentation for Python multiline strings
...P 257:
def trim(docstring):
if not docstring:
return ''
# Convert tabs to spaces (following the normal Python rules)
# and split into a list of lines:
lines = docstring.expandtabs().splitlines()
# Determine minimum indentation (first line doesn't count):
indent = sys...
Can I convert long to int?
I want to convert long to int .
8 Answers
8
...
Bash tool to get nth line from a file
...o be just as fast or faster. At least, it was (significantly) faster on my system when I tried it with NUM being 250000 on a file with half a million lines. YMMV, but I don't really see why it would.
– rici
Mar 25 '14 at 2:43
...
Quickest way to convert a base 10 number to any base in .NET?
I have and old(ish) C# method I wrote that takes a number and converts it to any base:
12 Answers
...
Installing python module within code
...o make it clear to users that programmatic use of pip is not allowed.
Use sys.executable to ensure that you will call the same pip associated with the current runtime.
import subprocess
import sys
def install(package):
subprocess.check_call([sys.executable, "-m", "pip", "install", package])
...
How to do relative imports in Python?
...vel module, regardless of where the module is actually located on the file system.
In Python 2.6, they're adding the ability to reference modules relative to the main module. PEP 366 describes the change.
Update: According to Nick Coghlan, the recommended alternative is to run the module inside ...
Render HTML to PDF in Django site
For my django powered site, I am looking for an easy solution to convert dynamic html pages to pdf.
8 Answers
...