Recent questions tagged python

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python - Installing psycopg2 (postgresql) in virtualenv on windows

I installed psycopg2 in virtualenv using easy_install psycopg2. I did not see any errors and looks like ... , in __bootstrap__ Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - struct.error: unpack requires a string argument of length 4

Python says I need 4 bytes for a format code of "BH": struct.error: unpack requires a string argument of length 4 ... 's data left to be read. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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368 views

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python - Interleave different length lists, elimating duplicates, and preserve order

I have two lists, let's say: keys1 = ['A', 'B', 'C', 'D', 'E', 'H', 'I'] keys2 = ['A', 'B' ... points if I can do it for three lists in one go. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Missing optional dependency 'tables'. In pandas to_hdf

following code is giving me error. import pandas as pd df = pd.DataFrame({'a' : [1,2,3]}) df.to_hdf(' ... how to resolve this. That will help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - ImportError: No module named PyQt4

I installed pyqt4 by using Homebrew. But when I import PyQt4 in python interpreter, It said that "No module ... somebody help me with that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Type hint that a function never returns

Python's new type hinting feature allows us to type hint that a function returns None... def some_func() -> ... seems correct in these cases. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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749 views

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python - Custom indent width for BeautifulSoup .prettify()

Is there any way to define custom indent width for .prettify() function? From what I can get from it's source ... HTML codes, let me know. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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676 views

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python - Apache Airflow DAG cannot import local module

I do not seem to understand how to import modules into an apache airflow DAG definition file. I would want to do ... . So what am I missing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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619 views

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python - Opening Local File Works with urllib but not with urllib2

I'm trying to open a local file using urllib2. How can I go about doing this? When I try the following ... file definitely does exit. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - plotly.offline.iplot gives a large blank field as its output in Jupyter Notebook/Lab

I am trying to create a Sankey chart in a Jupyter notebook, basing my code on the first example shown here. ... from-plotly-offline-iplot/8086 - See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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767 views

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python - Google App Engine: UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 48: ordinal not in range(128)

I'm working on a small application using Google App Engine which makes use of the Quora RSS feed. There is a form, ... endfor %} {% endblock %} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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404 views

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python - How does Django handle multiple requests?

How does Django handles multiple requests in production environment? Suppose we have one of web server: Apache, ... .. handle multiple users" See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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632 views

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python - Mypy/typeshed stubs for Pandas

Just checking to see if anybody listening has already generated a sort-of-working set of mypy/typeshed stubs for ` ... an old ticket for stubs.) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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571 views

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python - Finding matching keys in two large dictionaries and doing it fast

I am trying to find corresponding keys in two different dictionaries. Each has about 600k entries. Say for example: ... seems to work. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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395 views

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python - pandas timestamp series to string?

I am new to python (coming from R), and I am trying to understand how I can convert a timestamp series in a ... maybe this a called an array?) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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206 views

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python - Function with arguments in two lists

I have two lists xscat and yscat. I would like the list comprehension to pick up x and y in xscat and yscat ... other ways to put it (map)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

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python - Flask app raises a 500 error with no exception

I've been banging my head against this method in Flask for some time, and while it seems I'm making progress ... on Heroku if that's relevant. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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788 views

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python - Pylint: Disable specific warnings for specific folder

We have a Python project laid out like this: project/ ├── .pylintrc ├── module1.py ├── module2.py └── tests/ ... test-module inside the folder. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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277 views

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python - Trouble installing private github repository using pip

To preface, I have already seen this question Is it possible to use pip to install a package from a private ... image. Thanks ahead of time. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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391 views

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python - Django filter many to many field in admin?

I have three objects: Thing some fields Bucket things = models.ManyToManyField(Thing) User buckets = models. ... your help in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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375 views

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python - How to avoid slack command timeout error?

I am working with slack command (python code is running behind this), it works fine, but this gives error This slash ... ). How to avoid this ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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410 views

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python - module 'matplotlib' has no attribute 'verbose'

I can run my program in the terminal, but when I run it directly using Pycharm, it gives AttributeError: module ... ' has no attribute 'verbose' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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295 views

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python - NumPy save some arrays at once

I working on different shapes of arrays and I want to save them all with numpy.save, so, consider I have mat1 = ... as mat1 and mat2 at once. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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304 views

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python - ElasticSearch updates are not immediate, how do you wait for ElasticSearch to finish updating it's index?

I'm attempting to improve performance on a suite that tests against ElasticSearch. The tests take a long time ... finish updating it's index? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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216 views

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python - Force child class to call parent method when overriding it

I am curious whether there is a way in Python to force (from the Parent class) for a parent method to be ... , what would be an alternative? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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928 views

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python - Is there a way to hide the csrf label while looping through form using Flask and Flask-WTForms?

I have very simple contact form and I would like to hide the label somehow so that it doesn't show Csrf Token. I ... field.label }} {% endif %} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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460 views

1 answer

python - Modify list and dictionary during iteration, why does it fail on dict?

Let's consider this code which iterates over a list while removing an item each iteration: x = list(range(5 ... good reason for this behaviour? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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678 views

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python 3.x - Debugging Numpy VisibleDeprecationWarning (ndarray from ragged nested sequences)

Since NumPy version 19.0, one must specify dtype=object when creating an array from "ragged" sequences. ... .cp38-win_amd64.pyd). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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