大约有 5,685 项符合查询结果（耗时：0.0199秒） [XML]
Difference between len() and .__len__()?
...eaning would be clear to beginners but a.len() would not be as clear. When Python started __len__ didn't even exist and len was a special thing that worked with a few types of objects. Whether or not the situation this leaves us makes total sense, it's here to stay.
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How do I handle the window close event in Tkinter?
How do I handle the window close event (user clicking the 'X' button) in a Python Tkinter program?
6 Answers
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How to escape special characters in building a JSON string?
...d any JSON parser will choke on it. (Certainly JavaScript's JSON.parse and Python's json.loads do.)
– Mark Amery
Jan 31 '15 at 16:26
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How can I dynamically create derived classes from a base class
...ames in the naming scope --
now, that is not considered a good practice in Python - you either have
variable names, known at coding time, or data - and names learned in runtime
are more "data" than "variables" -
So, you could just add your classes to a dictionary and use them from there:
name = "...
csv.Error: iterator should return strings, not bytes
... best practices around it. I do that fairly consistently. If you're new to Python, and you get stuck in an interactive session with a file you can't do anything with, you would have appreciated my advice...
– Aaron Hall♦
Mar 9 '19 at 13:04
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How do I resize an image using PIL and maintain its aspect ratio?
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The Python 3 documentation for PIL says that thumbnail only works if the resulting image is smaller than the original one. Because of that I would guess that using resize is the better way.
– So S
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is there an virtual environment for node.js?
...ed the wiki modules page, but I can't find anything similar to virtualenv (python) or rvm.
7 Answers
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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
...way you avoid the need for an extra lookup by if index < len(my_list).
Python encourages the use of exceptions, which you handle is a phrase from Dive Into Python. Your example not only handles the exception (gracefully), rather than letting it silently pass, also the exception occurs only in th...
Get Output From the logging Module in IPython Notebook
When I running the following inside IPython Notebook I don't see any output:
8 Answers
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What is “pom” packaging in maven?
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Real life use case
At a Java-heavy company we had a python project that needed to go into a Nexus artifact repository. Python doesn't really have artifacts, so simply just wanted to .tar or .zip the python files and push. The repo already had maven integration, so we used &l...