This question already has answers here: How do you test that a Python function throws an exception? (18 answers) Closed 4 years ago. I did a simple test case: def setUp(self): self.testListNone = None def testListSlicing(self): self.assertRaises(TypeError, self.testListNone[:1]) and I am expecting test to pass, but I am getting exception: Traceback (most recent call last): … Read more
I would like to merge two DataFrames, and keep the index from the first frame as the index on the merged dataset. However, when I do the merge, the resulting DataFrame has integer index. How can I specify that I want to keep the index from the left data frame? In [4]: a = pd.DataFrame({‘col1’: … Read more
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, tools, software libraries, and more. You can edit the question so it can be answered with facts and citations. Closed 2 years ago. Improve this question I’d like to grab daily sunrise/sunset … Read more
I am running Pylint on a Python project. Pylint makes many complaints about being unable to find NumPy members. How can I avoid this while avoiding skipping membership checks? From the code: import numpy as np print np.zeros([1, 4]) Which, when ran, I get the expected: [[ 0. 0. 0. 0.]] However, Pylint gives me … Read more
I am learning how to use the threading and the multiprocessing modules in Python to run certain operations in parallel and speed up my code. I am finding this hard (maybe because I don’t have any theoretical background about it) to understand what the difference is between a threading.Thread() object and a multiprocessing.Process() one. Also, … Read more
How can I retrieve a list of tasks in a queue that are yet to be processed? 14 Answers 14
I want to start writing unit tests for my Python code, and the py.test framework sounds like a better bet than Python’s bundled unittest. So I added a “tests” directory to my project, and added test_sample.py to it. Now I want to configure PyCharm to run all the tests in my “tests” directory. PyCharm allegedly … Read more
Instead of the default “boxed” axis style I want to have only the left and bottom axis, i.e.: +——+ | | | | | | —> | | | | +——+ +——- This should be easy, but I can’t find the necessary options in the docs. 9 Answers 9
How can I completely uninstall Anaconda from MacOS Sierra and revert back to the original Python? I have tried using conda-clean -yes but that doesn’t work. I also remove the stuff in ~/.bash_profile but it still uses the Anaconda python and I can still run the conda command. 12 Answers 12
My dataframe has a DOB column (example format 1/1/2016) which by default gets converted to Pandas dtype ‘object’. Converting this to date format with df[‘DOB’] = pd.to_datetime(df[‘DOB’]), the date gets converted to: 2016-01-26 and its dtype is: datetime64[ns]. Now I want to convert this date format to 01/26/2016 or any other general date format. How … Read more
