大约有 30,000 项符合查询结果（耗时：0.0567秒） [XML]
What's the u prefix in a Python string?
...
You're right, see 3.1.3. Unicode Strings.
It's been the syntax since Python 2.0.
Python 3 made them redundant, as the default string type is Unicode. Versions 3.0 through 3.2 removed them, but they were re-added in 3.3+ for compatibility with Python 2 to aide the 2 to 3 transition.
...
Python List vs. Array - when to use?
...
Basically, Python lists are very flexible and can hold completely heterogeneous, arbitrary data, and they can be appended to very efficiently, in amortized constant time. If you need to shrink and grow your list time-efficiently and wi...
What does %s mean in a python format string?
What does %s mean in Python? And what does the following bit of code do?
7 Answers
7...
What is the most efficient string concatenation method in python?
Is there any efficient mass string concatenation method in Python (like StringBuilder in C# or StringBuffer in Java)? I found following methods here :
...
pip installing in global site-packages instead of virtualenv
...es folder instead of the one in the virtualenv folder. Here's how I set up Python3 and virtualenv on OS X Mavericks (10.9.1):
...
Is it possible to force Excel recognize UTF-8 CSV files automatically?
...nt ALL cells to display gridlines this is also possible in HTML:
<html xmlns:x="urn:schemas-microsoft-com:office:excel">
<head>
<meta http-equiv="content-type" content="text/plain; charset=UTF-8"/>
<xml>
<x:ExcelWorkbook>
...
Import error: No module name urllib2
...mentation:
The urllib2 module has been split across several modules in Python 3 named urllib.request and urllib.error. The 2to3 tool will automatically adapt imports when converting your sources to Python 3.
So you should instead be saying
from urllib.request import urlopen
html = urlopen("ht...
Add Variables to Tuple
I am learning Python and creating a database connection.
While trying to add to the DB, I am thinking of creating tuples out of information and then add them to the DB.
...
python numpy ValueError: operands could not be broadcast together with shapes
...
You are looking for np.matmul(X, y). In Python 3.5+ you can use X @ y.
share
|
improve this answer
|
follow
|
...
How can I create a simple message box in Python?
...and single line code like this:
import ctypes # An included library with Python install.
ctypes.windll.user32.MessageBoxW(0, "Your text", "Your title", 1)
Or define a function (Mbox) like so:
import ctypes # An included library with Python install.
def Mbox(title, text, style):
return c...