Recent questions tagged python

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python - 'module' object has no attribute 'choice' - trying to use random.choice

Could someone please tell me what I may be doing wrong. I keep getting this message when I run my python ... object has no attribute 'choice' See Question&Answers more detail:os...

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

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239 views

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python - Normalise between 0 and 1 ignoring NaN

For a list of numbers ranging from x to y that may contain NaN, how can I normalise between 0 and 1, ignoring ... to ignore all the NaN values. See Question&Answers more detail:os...

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

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434 views

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python - Django Rest Framework model Id field in nested relationship serializer

I'm usign Django Rest Framework where I have the following two serializers: class ServiceSerializer(serializers. ... to the serializer? See Question&Answers more detail:os...

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

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600 views

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python - SQLAlchemy: How to order query results (order_by) on a relationship's field?

Models from sqlalchemy.ext.declarative import declarative_base from sqlalchemy import Column, ForeignKey from sqlalchemy ... over complicated. 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 get optparse's OptionParser to ignore invalid options?

In python's OptionParser, how can I instruct it to ignore undefined options supplied to method parse_args? e.g. ... options in the command line. See Question&Answers more detail:os...

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

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343 views

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python - Strip timezone info in pandas

I have been struggling with removing the time zone info from a column in a pandas dataframe. I have checked ... Is there an easier solution? See Question&Answers more detail:os...

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

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276 views

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python - Normalize DataFrame by group

Let's say that I have some data generated as follows: N = 20 m = 3 data = np.random.normal(size ... group. Any suggestions would be appreciated. See Question&Answers more detail:os...

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

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784 views

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python - Finding the mean and standard deviation of a timedelta object in pandas df

I would like to calculate the mean and standard deviation of a timedelta by bank from a dataframe with two columns ... .groupby('bank').std() See Question&Answers more detail:os...

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

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677 views

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python - Creating numpy linspace out of datetime

I'm writing a script that plots some data with dates on the x axis (in matplotlib). I need to create a numpy. ... M8[us]') and dtype('float64') See Question&Answers more detail:os...

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

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318 views

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python - Comparing None with built-in types using arithmetic operators?

Python 2.7.2 (default, Jun 12 2011, 14:24:46) [MSC v.1500 64 bit (AMD64)] on win32 Type "help", ... ) or is it CPython's implementation detail? See Question&Answers more detail:os...

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

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323 views

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python - How to check if float pandas column contains only integer numbers?

I have a dataframe df = pd.DataFrame(data=np.arange(10),columns=['v']).astype(float) How ... /truncation/floating point representation errors See Question&Answers more detail:os...

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

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261 views

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python - Write comments in CSV file with pandas

I would like to write some comments in my CSV file created with pandas. I haven't found any option for this ... any body have a better option? See Question&Answers more detail:os...

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

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523 views

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python - FutureWarning: Using a non-tuple sequence for multidimensional indexing is deprecated use `arr[tuple(seq)]` instead of `arr[seq]`

I would like not to use the non-tuple sequence for multidimensional indexing so that the script will support future ... ["column_4"].max()) See Question&Answers more detail:os...

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

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324 views

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python - Sphinx and argparse - autodocumenting command line scripts?

I'm building a Python package, and using Sphinx to create the docs. Aside from my package code, I also include ... this question, 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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318 views

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python - Get a value from solution set returned as finiteset by Sympy

I`m creating a script in Python Sympy library and trying to access the result returned by solveset() and ... has no attribute 'command'" See Question&Answers more detail:os...

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

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754 views

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python - Append 2D array to 3D array, extending third dimension

I have an array A that has shape (480, 640, 3), and an array B with shape (480, 640). How can ... arrays must have same number of dimensions. See Question&Answers more detail:os...

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

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177 views

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python - Why am I getting an error about my class defining __slots__ when trying to pickle an object?

I'm trying to pickle an object of a (new-style) class I defined. But I'm getting the following error: > ... to "share" the object reference. See Question&Answers more detail:os...

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

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229 views

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python - How to treat NULL as a normal string with pandas?

I have a csv-file with a column with strings and I want to read it with pandas. In this file the ... not contain any actually missing values. See Question&Answers more detail:os...

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

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281 views

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python - portaudio.h: No such file or directory

I got the following error while trying to install pyaudio using pip3 in ubuntu 16.04: Collecting pyaudio ... /pip-build-mxgvewdb/pyaudio/ See Question&Answers more detail:os...

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

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163 views

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python - Not able to install packages in Pycharm

I have pycharm community edition(latest stable build) installed on my Ubuntu 16.04 LTS, I am not able to install ... not face the same issue. See Question&Answers more detail:os...

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

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464 views

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python - Type hint for NumPy ndarray dtype?

I would like a function to include a type hint for NumPy ndarray's alongside with its dtype. With lists, for ... type hints for np.ndarray? See Question&Answers more detail:os...

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

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748 views

1 answer

python - "RuntimeError: Expected 4-dimensional input for 4-dimensional weight 32 3 3, but got 3-dimensional input of size [3, 224, 224] instead"?

I am trying to use a pre-trained model. Here's where the problem occurs Isn't the model supposed to take in ... () model = inception.to(device) See Question&Answers more detail:os...

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

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343 views

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python - Bisect, is it possible to work with descending sorted lists?

How can I use bisect module on lists that are sorted descending? e.g. import bisect x = [1.0,2.0,3.0, ... - none of which work for me. See Question&Answers more detail:os...

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

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342 views

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python - Randomly select from numpy array

I have two related numpy arrays, X and y. I need to select n random rows from X and store this in an array, the ... [0,1] How can I do 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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241 views

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python - Removing u2018 and u2019 character

I am using Beautiful Soup to parse webpages and printing the name of the webpages visited on the terminal. ... way to remove these characters? See Question&Answers more detail:os...

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

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370 views

1 answer

python - how to modify a 2D numpy array at specific locations without a loop?

I have a 2D numpy array and I have a arrays of rows and columns which should be set to a particular value. Lets consider ... ,n),(b,x),(c,z). See Question&Answers more detail:os...

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

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169 views

1 answer

python - How do I print a '%' sign using string formatting?

I've made a little script to calculator percent; however, I wish to actually include the % within ... converted during string formatting See Question&Answers more detail:os...

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

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255 views

1 answer

python module for nslookup

Is there a python-module that's doing the same stuff as nslookup does? I am planning to use nslookup on ... this already. Thanks 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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