Recent questions tagged Python

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I'm trying to urlencode an dictionary in python with urllib.urlencode. The problem is, I have to encode an ... to produce the expected result? 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 convert bytes type to dictionary?

I have a bytes type object like this: b"{'one': 1, 'two': 2}" I need to get the dictionary from ... ) TypeError: 'bytes' object is not callable 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 - Draw a rectangle and a text in it using PIL

I want to draw a rectangle and a text in it, here's a part of my code and it's a bit obfuscated: ... Should I necessarily compose them or what? 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 - Scipy sparse... arrays?

So, I'm doing some Kmeans classification using numpy arrays that are quite sparse-- lots and lots of zeroes. I ... what to do. Any advice? 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 calculate precision and recall in Keras

I am building a multi-class classifier with Keras 2.02 (with Tensorflow backend)，and I do not know how to ... in Keras. Please help 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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python logging file is not working when using logging.basicConfig

I have the following lines of code that initialize logging. I comment one out and leave the other to be used. The ... )-10s) %(message)s') 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 - Check if a string is hexadecimal

I know the easiest way is using a regular expression, but I wonder if there are other ways to do this check. Why do ... -be") >> u'Hello world!' 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 do I write a Latex formula in the legend of a plot using Matplotlib inside a .py file?

I am writing a script in Python (.py file) and I am using Matplotlib to plot an array. I want to add ... .py script from the terminal/IPython. 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 iterate `dict` with `enumerate` and unpack the index, key, and value along with iteration

How to iterate dict with enumerate such that I could unpack the index, key and value at the time of iteration? ... I'm on the last one. 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 - Remove NaN/NULL columns in a Pandas dataframe?

I have a dataFrame in pandas and several of the columns have all null values. Is there a built in function ... let me remove those columns? See Question&Answers more detail:os...

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

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385 views

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python - IPython Notebook - early exit from cell

I'd like to programmatically exit a cell early in IPython Notebook. exit(0), however, kills the kernel. ... cell or manually halt execution. 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 - Set value to an entire column of a pandas dataframe

I'm trying to set the entire column of a dataframe to a specific value. In [1]: df Out [1]: issueid industry 0 001 ... 3.5.2 and pandas 0.18.1. See Question&Answers more detail:os...

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

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317 views

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python - In the Django admin interface, is there a way to duplicate an item?

Just wondering if there is an easy way to add the functionality to duplicate an existing listing in the admin ... basis in the future. See Question&Answers more detail:os...

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

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314 views

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python - Matplotlib/Pandas error using histogram

I have a problem making histograms from pandas series objects and I can't understand why it does not work. The ... than min in range parameter. See Question&Answers more detail:os...

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

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441 views

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python - How to turn a boolean array into index array in numpy

Is there an efficient Numpy mechanism to retrieve the integer indexes of locations in an array based on a ... generate these without looping? See Question&Answers more detail:os...

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

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567 views

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python - Pandas date_range to generate monthly data at beginning of the month

I'm trying to generate a date range of monthly data where the day is always at the beginning of the month: ... of month surely must be possible! 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 - difference between find and index

I am new to python and cannot quite understand the difference between find and index. >>> line 'hi, this is ... return the same result. 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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255 views

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python - get file list of files contained in a zip file

I have a zip archive: my_zip.zip. Inside it is one txt file, the name of which I do not know. I was taking a ... r') >>> contents = f.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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174 views

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python - Using super with a class method

I'm trying to learn the super() function in Python. I thought I had a grasp of it until I came over this ... be called with an instance of B. 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 - Run setUp only once for a set of automated tests

My Python version is 2.6. I would like to execute the test setUp method only once since I do things there ... not working? Did I miss anything? See Question&Answers more detail:os...

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

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456 views

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python - Mocking two functions with patch for a unit test

I have a function I want to unit test contains calls two other functions. I am unsure how can I mock both functions ... Ran 1 test in 0.008s OK See Question&Answers more detail:os...

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

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377 views

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python - How to lowercase a pandas dataframe string column if it has missing values?

The following code does not work. import pandas as pd import numpy as np df=pd.DataFrame(['ONE','Two', np. ... the real data frame is huge. See Question&Answers more detail:os...

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

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366 views

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python - Disable all Pylint warnings for a file

We are using Pylint within our build system. We have a Python package within our code base that has throwaway ... all warnings for a module? 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 - sql "LIKE" equivalent in django query

What is the equivalent of this SQL statement in django? SELECT * FROM table_name WHERE string LIKE pattern; How do ... How do i implement 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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273 views

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python - Following links, Scrapy web crawler framework

After several readings to Scrapy docs I'm still not catching the diferrence between using CrawlSpider rules and ... Thanks for your 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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201 views

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python - google app engine oauth2 provider

I want to set up a rest api with an oauth 2.0 provider for authentication.I use python. is there any library ... runs on app engine ? 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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497 views

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python 3.x - Pygame not loading png after making .exe with Pyinstaller

I've been trying to make an .exe from my .py game and it's been really frustrating. I'm using Python 3.5 ... =False, upx=True, name='spec_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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588 views

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python - Replicating GROUP_CONCAT for pandas.DataFrame

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

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