Recent questions tagged Python

0 votes

226 views

1 answer

python - Easy way to apply transformation from `pandas.get_dummies` to new data?

Suppose I have a data frame data with strings that I want converted to indicators. I use pandas.get_dummies(data) to ... a good way to do this? See Question&Answers more detail:os...

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

0 votes

393 views

1 answer

python - Rotating axes label text in 3D matplotlib

How do I rotate the z-label so the text reads (bottom => top) rather than (top => bottom)? import matplotlib. ... on it. Is there a workaround? See Question&Answers more detail:os...

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

0 votes

168 views

1 answer

python - How to pivot on multiple columns in Spark SQL?

I need to pivot more than one column in a pyspark dataframe. Sample dataframe, >>> d = [(100,1,23,10),( ... way of doing it. Thanks in advance! See Question&Answers more detail:os...

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

0 votes

279 views

1 answer

python - Webapp2 for Authentication and Login

I would like to roll my own login system for my python Google App Engine application (rather than using ... authenticate against the AuthStore? See Question&Answers more detail:os...

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

0 votes

472 views

1 answer

python - How to remove accents from values in columns?

How do I change the special characters to the usual alphabet letters? This is my dataframe: In [56]: cities ... Albania 2011.0 Durres 56511.0 See Question&Answers more detail:os...

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

0 votes

229 views

1 answer

python - SQLAlchemy: selecting which columns of an object in a query

Is it possible to control which columns are queried in the query method of SQLAlchemy, while still returning instances ... ; if so, how? See Question&Answers more detail:os...

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

0 votes

175 views

1 answer

python - Twisted + SQLAlchemy and the best way to do it

So I'm writing yet another Twisted based daemon. It'll have an xmlrpc interface as usual so I can easily ... interesting here. Any better ideas? See Question&Answers more detail:os...

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

0 votes

375 views

1 answer

python - How does the callback function work in multiprocessing map_async?

It cost me a whole night to debug my code, and I finally found this tricky problem. Please take a look at the code below ... of [[0],[0,1]]? See Question&Answers more detail:os...

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

0 votes

274 views

1 answer

python - How to get the samples in each cluster?

I am using the sklearn.cluster KMeans package. Once I finish the clustering if I need to know which values ... data points in that cluster? See Question&Answers more detail:os...

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

0 votes

113 views

1 answer

python - How to set/get pandas.DataFrame to/from Redis?

After setting a DataFrame to redis, then getting it back, redis returns a string and I can't figure out a ... can I do these two appropriately? See Question&Answers more detail:os...

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

0 votes

314 views

1 answer

python - One hot encoding of string categorical features

I'm trying to perform a one hot encoding of a trivial dataset. data = [['a', 'dog', 'red'] ['b ... t encode your training / test set separately. See Question&Answers more detail:os...

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

0 votes

992 views

1 answer

python - ExcelFile Vs. read_excel in pandas

I'm diving into pandas and experimenting around. As for reading data from an Excel file. I wonder what's the ... to use either one? Thanks! See Question&Answers more detail:os...

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

0 votes

174 views

1 answer

python - What is the pythonic way to calculate dot product?

I have two lists, one is named as A, another is named as B. Each element in A is a triple, and each ... how to write in pythonic way? Thanks! See Question&Answers more detail:os...

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

0 votes

1.6k views

1 answer

python - One colorbar for seaborn heatmaps in subplot

Here is an example that shows a colorbar for each subplot: import seaborn as sns import matplotlib.pyplot as ... when heatmap is called. See Question&Answers more detail:os...

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

0 votes

445 views

1 answer

python pandas pivot_table count frequency in one column

I am still new to Python pandas' pivot_table and would like to ask a way to count frequencies of values in ... Thanks for your help in advance! See Question&Answers more detail:os...

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

0 votes

224 views

1 answer

python - How does keras define "accuracy" and "loss"?

I can't find how Keras defines "accuracy" and "loss". I know I can specify different metrics (e.g. mse, ... I'll settle for an answer here. See Question&Answers more detail:os...

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

0 votes

191 views

1 answer

python - Image.show() won't display the picture

I'm running a python script but it won't show the picture. I have an apple.jpg image in a ... gets completed without showing any error. See Question&Answers more detail:os...

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

0 votes

111 views

1 answer

python - How to install & configure mod_wsgi for py3

I installed & configured mod_wsgi for python2.7 but now I would also like to have mod_wsgi for py3 I'm in ... to include in my apache conf? See Question&Answers more detail:os...

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

0 votes

539 views

1 answer

python - TFIDF for Large Dataset

I have a corpus which has around 8 million news articles, I need to get the TFIDF representation of them ... TFIDF vectors for large datasets? See Question&Answers more detail:os...

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

0 votes

257 views

1 answer

python - Customize argparse help message

I have written the following sample code to demonstrate my issue. import argparse parser = argparse.ArgumentParser() ... this can be done? See Question&Answers more detail:os...

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

0 votes

203 views

1 answer

python - Programmatically convert pandas dataframe to markdown table

I have a Pandas Dataframe generated from a database, which has data with mixed encodings. For example: +----+--- ... 253 | 15th and 16th grade | See Question&Answers more detail:os...

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

0 votes

755 views

1 answer

python - One chart with two different y axis ranges in Bokeh?

I would like a Bar chart with Quantity information on the left y-axis, and then overlay a Scatter/Line ... doing something similar with Bokeh? See Question&Answers more detail:os...

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

0 votes

204 views

1 answer

python - How to set up a Django project in PyCharm

I'm new in this area so I have a question. Recently, I started working with Python and Django. I installed PyCharm ... tell me how to do this? See Question&Answers more detail:os...

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

0 votes

605 views

1 answer

python - TypeError:exceptions must be old-style classes or derived from BaseException, not str

Following is my code: test = 'abc' if True: raise test + 'def' And when i run this, it gives me the ... what kind of type should the test be? See Question&Answers more detail:os...

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

0 votes

207 views

1 answer

python - Sort a list of numerical strings in ascending order

I have created a sqlite database which has a table which stores temperature values. The temperature values are written to ... , '250', '300'] See Question&Answers more detail:os...

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

0 votes

296 views

1 answer

python - StringIO and compatibility with 'with' statement (context manager)

I have some legacy code with a legacy function that takes a filename as an argument and processes the file ... string or buffer, instance found See Question&Answers more detail:os...

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

0 votes

344 views

1 answer

python - Difference between pip install options "ignore-installed" and "force-reinstall"

There are two pip install options related to reinstalling the packages, which are --ignore-installed and --force- ... me for a long time. See Question&Answers more detail:os...

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

0 votes

191 views

1 answer

python - Should all member variables be initialized in __init__

Maybe this is more of a style question than a technical one but I have a class with several member variables and ... the other for some reason. See Question&Answers more detail:os...

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

Categories

Just Browsing Browsing

Most popular tags