大约有 6,400 项符合查询结果（耗时：0.0250秒） [XML]
Removing multiple keys from a dictionary safely
...
This. This is the clever Pythonista's choice. dict.pop() eliminates the need for key existence testing. Excellent.
– Cecil Curry
Mar 11 '16 at 1:51
...
How to perform element-wise multiplication of two lists?
...an element wise multiplication, to multiply two lists together by value in Python, like we can do it in Matlab.
14 Answers
...
Converting dict to OrderedDict
... having some trouble using the collections.OrderedDict class. I am using Python 2.7 on Raspbian, the Debian distro for Raspberry Pi. I am trying to print two dictionaries in order for comparison (side-by-side) for a text-adventure. The order is essential to compare accurately.
No matter what I try...
How do I design a class in Python?
...llowing advices (similar to @S.Lott's advice) are from the book, Beginning Python: From Novice to Professional
Write down a description of your problem (what should the problem do?). Underline all the nouns, verbs, and adjectives.
Go through the nouns, looking for potential classes.
Go th...
How to generate a random string of a fixed length in Go?
...ted Jun 12 '19 at 6:11
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
answered Feb 14 '16 at 23:30
...
Scatter plot and Color mapping in Python
...ackoverflow.com%2fquestions%2f17682216%2fscatter-plot-and-color-mapping-in-python%23new-answer', 'question_page');
}
);
Post as a guest
Name
...
Shell command to sum integers, one per line?
...
The one-liner version in Python:
$ python -c "import sys; print(sum(int(l) for l in sys.stdin))"
share
|
improve this answer
|
...
Conditional Replace Pandas
...
yield error: /opt/anaconda3/envs/python35/lib/python3.5/site-packages/ipykernel_launcher.py:1: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame See the caveats in the documentation: pandas.pydata.org/pandas-docs/sta...
How to avoid having class data shared among instances?
... @AmalTs It looks like you don't understand how assignment in python works. See this video or this SO post. The behaviour you see is caused by the fact that you are mutating lists but rebinding references to ints and strings.
– Андрей Беньковский
...
“inconsistent use of tabs and spaces in indentation”
I'm trying to create an application in Python 3.2 and I use tabs all the time for indentation, but even the editor changes some of them into spaces and then print out "inconsistent use of tabs and spaces in indentation" when I try to run the program.
...