大约有 12,000 项符合查询结果(耗时:0.0217秒) [XML]

https://stackoverflow.com/ques... 

How can I extract the folder path from file path in Python?

...hould consider using pathlib for new development. It is in the stdlib for Python3.4, but available on PyPI for earlier versions. This library provides a more object-orented method to manipulate paths <opinion> and is much easier read and program with </opinion>. >>> import pa...
https://stackoverflow.com/ques... 

Ubuntu running `pip install` gives error 'The following required packages can not be built: * freety

... Why not directly use sudo apt-get install python-matplotlib as recommended here: matplotlib.org/users/installing.html – Timo Nov 8 '14 at 21:16 2 ...
https://stackoverflow.com/ques... 

How do you create nested dict in Python?

...y create a new key entry in the dict and cause a lot of havoc. Here is a Python3 example with nested_dict module: import nested_dict as nd nest = nd.nested_dict() nest['outer1']['inner1'] = 'v11' nest['outer1']['inner2'] = 'v12' print('original nested dict: \n', nest) try: nest['outer1']['wro...
https://stackoverflow.com/ques... 

How to save all the variables in the current python session?

I want to save all the variables in my current python environment. It seems one option is to use the 'pickle' module. However, I don't want to do this for 2 reasons: ...
https://stackoverflow.com/ques... 

Using a dictionary to count the items in a list [duplicate]

I'm new to Python and I have a simple question, say I have a list of items: 8 Answers ...
https://stackoverflow.com/ques... 

How can I make setuptools install a package that's not on PyPI?

...ted working with setuptools and virtualenv. My package requires the latest python-gearman that is only available from GitHub. The python-gearman version that's on PyPI is an old one. The Github source is setuptools-compatible, i.e. has setup.py, etc. Is there a way to make setuptools download and in...
https://stackoverflow.com/ques... 

Is there a library function for Root mean square error (RMSE) in python?

...u is unnecessary over-engineering. All these metrics are a single line of python code at most 2 inches long. The three metrics rmse, mse, rmd, and rms are at their core conceptually identical. RMSE answers the question: "How similar, on average, are the numbers in list1 to list2?". The two lists...
https://stackoverflow.com/ques... 

How to achieve code folding effects in Emacs?

... I use the outline minor mode to fold my python code. Instead of needing to place {{{ and }}} as in folding mode, it uses where the block is defined. http://www.gnu.org/software/emacs/manual/html_node/emacs/Outline-Mode.html http://www.emacswiki.org/emacs/OutlineMi...
https://stackoverflow.com/ques... 

How to remove all characters after a specific character in python?

...l contain all of the original string. The partition function was added in Python 2.5. partition(...) S.partition(sep) -> (head, sep, tail) Searches for the separator sep in S, and returns the part before it, the separator itself, and the part after it. If the separator is not found, ...
https://stackoverflow.com/ques... 

How can I use if/else in a dictionary comprehension?

Does there exist a way in Python 2.7+ to make something like the following? 4 Answers ...