Recent questions tagged Python

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python 2.7 - No module named cloud while using google.cloud import bigquery

i have built an app engine application to load data into bigquery table using google app engine launcher but ... doing something wrong here? 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 - Is there a way to access __dict__ (or something like it) that includes base classes?

Suppose we have the following class hierarchy: class ClassA: @property def foo(self): return "hello" ... = member_instance return return_value 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 - FFT in Matlab and numpy / scipy give different results

I am trying to re-implement one of the matlab toolboxes. they use fft over there. when i perform same operation on ... , what can be the cause? 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 sphinx - Render output from markdown file inside .rst file

I am using Sphinx for documenting a Python project and would like to have content from an existing .md file display ... inside of an .rst file? 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 - Pandas Convert 'NA' to NaN

I just picked up Pandas to do with some data analysis work in my biology research. Turns out one of the proteins I'm ... , M2, NA, NP etc...' See Question&Answers more detail:os...

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

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681 views

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python - How to filter in `sqlalchemy` by string length?

How to filter in sqlalchemy by string length? This code snippet: sess.query(db.ArticlesTable).filter(or_( and_(db. ... = Column(String) ... 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 - Import caffe error

i compiled caffe successfully in my ubuntu machine but cannot import in python. Caffe is installed /home/pbu/ ... : No module named _caffe 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 - Error trying to run pgAdmin4

I've installed postgresql 9.6 (using suggested linux installer) which comes with pgAdmin4, but getting a few ... work on ubuntu environemt? 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 - In the Inline "open and write file" is the close() implicit?

In Python (>2.7) does the code : open('tick.001', 'w').write('test') has the same result as : ... the 'close' for this inline functionnality ? 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 - How to remove/delete every n-th element from list?

I had already looked through this post: Python: building new list from existing by dropping every n-th element, but ... n-th item from a list? See Question&Answers more detail:os...

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

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885 views

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python - Does pyodbc support any form of named parameters?

I know sqlite3 has data = {'test_col': 012345679} sqlite3_conn.execute(""" UPDATE test_db SET test_col = :test_col ... KEY UPDATE, it is needed. See Question&Answers more detail:os...

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

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490 views

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python pandas DataFrame subplot in columns and rows

I would like to produce a subplot from data 4 column DataFrame into 2 rows and 2 columns df =pd.DataFrame(np.random ... figsize=(8, 6)) 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 - django id integer limit

Is there a limit to the AutoField in a Django model or the database back-ends? The Django project I am ... dev and Postgresql for production. See Question&Answers more detail:os...

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

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919 views

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python - ValueError("color kwarg must have one color per dataset")?

I just simply save the data into files and read them out and then draw histogram. However, it appears this ... must have one color per dataset See Question&Answers more detail:os...

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

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857 views

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python - How to deal with PyCharm's "Expected type X, got Y instead"

When using PyCharm, Pycharm's code style inspection gives me the warning Expected type 'Union[ndarray, ... the warnings that specifically? See Question&Answers more detail:os...

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

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550 views

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python - how can I asynchronously map/filter an asynchronous iterable?

Let's say I have an asynchronous iterable that I can pass over using async for, how then can I then map ... to accomplish. yield func(payload) 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 - Problems upgrading Ipython (prompt_toolkit incompatibilities)

Trying to open a jupyter notebook file (.ipynb file) with this command ipython notebook filename.ipynb then ... module named 'prompt_toolkit' See Question&Answers more detail:os...

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

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729 views

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python - Colorbar on Geopandas

I am trying to create a Matplotlib colorbar on GeoPandas. import geopandas as gp import pandas as pd import ... to get colorbar to work. See Question&Answers more detail:os...

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

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489 views

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python - How to remove a row from pandas dataframe based on the length of the column values?

In the following pandas.DataFframe: df = alfa beta ceta a,b,c c,d,e g,e,h a,b d,e,f g,h,k j,k c,k,l f, ... ['alfa'].str.split(',').map(len) < 3] See Question&Answers more detail:os...

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

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622 views

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python - AttributeError: 'FreqDist' object has no attribute 'inc'

I am a beginner in Python and NLTK. I am trying to run the following code from a tutorial: from nltk.corpus ... idea what I am doing wrong? See Question&Answers more detail:os...

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

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379 views

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python - Using Django view variables inside templates

this is a rather basic question (I'm new to Django) but I'm having trouble using a variable set in ... variables within my templates. 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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1.1k views

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python - Easiest way to copy all fields from one dataclass instance to another?

Let's assume you have defined a Python dataclass: @dataclass class Marker: a: float b: float = 1.0 What's the ... be a simpler way, I guess. 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 - how can I flatten an 2d numpy array, which has different length in the second axis?

I have a numpy array which looks like: myArray = np.array([[1,2],[3]]) But I can not flatten it, In: myArray ... get the output: array([1,2,3])? See Question&Answers more detail:os...

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

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752 views

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python - How to get correlation matrix values pyspark

I have a correlation matrix calculated as follow on pyspark 2.2: from pyspark.ml.linalg import Vectors from ... desiderable. Thanks for 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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1.6k views

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python - ValueError: Unable to configure handler 'file': [Errno 2] No such file or directory:

I am very new to Python and Django and is currently busy learning myself through tutorials on www.djangoproject. ... /deonproject/log/debug.log' See Question&Answers more detail:os...

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

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593 views

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python - Django datefield filter by weekday/weekend

I've got a date_created field in my database: date_created = models.DateField(auto_now_add=True) Is there some way I ... 5) // filter by weekend See Question&Answers more detail:os...

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

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974 views

1 answer

python - Spacing between bars in matplotlib hist() with thousands of bins

I'm making histograms using matplotlib's hist() function or bar(), and I want to use >10,000 bins ... to eachother with no whitespace inbetween. See Question&Answers more detail:os...

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

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485 views

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python - Object has no attribute _state

I'm developing Django application, and I have following error 'Sheep' object has no attribute _state My models are ... aul) What I must do? See Question&Answers more detail:os...

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

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