Recent questions tagged Python

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python - pd.read_hdf throws 'cannot set WRITABLE flag to True of this array'

When running pd.read_hdf('myfile.h5') I get the following traceback error: [[...some longer traceback]] ~/.local/ ... doesn't want to read it. See Question&Answers more detail:os...

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

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534 views

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python - Pandas dataframe: how to apply describe() to each group and add to new columns?

df: name score A 1 A 2 A 3 A 4 A 5 B 2 B 4 B 6 B 8 Want to get the following new ... information from df.describe() and reformat it? 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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319 views

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python - Adding pandas Series with different indices without getting NaNs

I'm trying to do what I think is a straight froward operation in pandas but I can't seem to make it ... are just passed along. Any suggestions? See Question&Answers more detail:os...

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

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278 views

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python - Jupyter magic to handle notebook exceptions

I have a few long-running experiments in my Jupyter Notebooks. Because I don't know when they will finish, ... in advance for any suggestions. See Question&Answers more detail:os...

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

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350 views

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python - how to get the memory address of a numpy array for C

I constructed an numpy array:: a=np.ndarray([2,3]) then i want to see where its data are:: a.data >>>Out ... how should i get the value of ptr? See Question&Answers more detail:os...

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

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582 views

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python - Mails not being sent to people in CC

I have the following script for sending mails using python import smtplib from email.mime.multipart import MIMEMultipart ... in the CC field See Question&Answers more detail:os...

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

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264 views

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python - Defining a model class in Django shell fails

when I use the Django shell, it shows an error; this is the error: >>> from django.db import models >>> class ... out of range What can I 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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444 views

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python - Using SQLAlchemy session from Flask raises "SQLite objects created in a thread can only be used in that same thread"

I have a Flask view which uses SQLAlchemy to query and display some blog posts. I am running my app using ... id 140244523542272 None [{}] See Question&Answers more detail:os...

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

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356 views

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python json dumps

i have the following string, need to turn it into a list without u'': my_str = "[{u'name': u'squats', u'wrs': [[u' ... ", "wrs": [["55", 9]]}] See Question&Answers more detail:os...

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

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462 views

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python - Django Admin's "view on site" points to example.com instead of my domain

I added a get_absolute_url function to one of my models. def get_absolute_url(self): return '/foo/bar' The admin ... What am I 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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1.1k views

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python - OpenCV - Reading a 16 bit grayscale image

I'm trying to read a 16 bit grayscale image using OpenCV 2.4 in Python, but it seems to be loading it as 8 bit. ... How do I get it as 16 bit? See Question&Answers more detail:os...

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

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911 views

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python - SQLAlchemy Automap does not create class for tables without primary key

I am using SQL Alchemy v(0.9.1) which has the automap functionality. This allows me to create classes and ... meant to link two other tables. See Question&Answers more detail:os...

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

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358 views

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python - Pip not picking up a custom install cmdclass

so I found this answer to my exact question, but for some reason it's not working: $ cat /tmp/testinstall/setup. ... idea what's going on 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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297 views

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python - dict.get() - default arg evaluated even upon success

Why is the default in dict.get(key[, default]) evaluated even if the key is in the dictionary? >>> key = 'foo' ... (key, a[key]) KeyError: 'foo' See Question&Answers more detail:os...

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

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327 views

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python - How to make "int" parse blank strings?

I have a parsing system for fixed-length text records based on a layout table: parse_table = [ ('name', type, ... don't add too much complexity. See Question&Answers more detail:os...

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

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508 views

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python - 'put' in SFTP using Paramiko

I've installed and written the following Paramiko which is unable to put the file. It is easily able to 'get ... Failure How do I overcome 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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242 views

1 answer

python - Matplotlib control which plot is on top

I am wondering if there is a way to control which plot lies on top of other plots if one makes multiple plots on ... need the dots to be on top. See Question&Answers more detail:os...

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

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514 views

1 answer

python - How to test if an Enum member with a certain name exists?

Using Python 3.4 I want to test whether an Enum class contains a member with a certain name. Example: class ... there is a more elegant way? See Question&Answers more detail:os...

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

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418 views

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python - How to get key value in django template?

Django template system - how to get python dictionary value from key? I have two dictionaries which represent ... dictionary is not printing. See Question&Answers more detail:os...

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

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759 views

1 answer

python - How I can load a font file with PIL.ImageFont.truetype without specifying the absolute path?

When I write the code in Windows, this code can load the font file just fine: ImageFont.truetype(filename ... specifying the absolute path? See Question&Answers more detail:os...

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

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294 views

1 answer

python - How can a pandas merge preserve order?

I have two DataFrames in pandas, trying to merge them. But pandas keeps changing the order. I've tried setting ... I'm using pandas version 11. See Question&Answers more detail:os...

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

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327 views

1 answer

python - Customize module search path (PYTHONPATH) via pipenv

I have a Python project consisting of a Jupyter notebook, several scripts in a bin directory and modules in a ... modules on the search path? See Question&Answers more detail:os...

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

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376 views

1 answer

python - Tensorflow Dictionary lookup with String tensor

Is there any way to perform a dictionary lookup based on a String tensor in Tensorflow? In plain Python, I ... (string_tensor) would be nice. See Question&Answers more detail:os...

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

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351 views

1 answer

python - How do I let my matplotlib plot go beyond the axes?

I have to translate an image plotting script from matlab to matplotlib/pylab, and I'm trying to achieve the same ... the limits of the y axis. See Question&Answers more detail:os...

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

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296 views

1 answer

python - Numpy: change max in each row to 1, all other numbers to 0

I'm trying to implement a numpy function that replaces the max in each row of a 2D array with 1, and all other numbers with ... [1. 1.] [1. 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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743 views

1 answer

python - How to clear an entire Treeview with Tkinter

My program uses a ttk.Treeview as a table and fills it with many numbers. I want to clear the ttk.Treeview ... clear the ttk.Treeview? 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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290 views

1 answer

python - Keras flowFromDirectory get file names as they are being generated

Is it possible to get the file names that were loaded using flow_from_directory ? I have : datagen = ImageDataGenerator( ... I get is the same. 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

1 answer

python - Using an OrderedDict in **kwargs

Is it possible to pass an OrderedDict instance to a function which uses the **kwargs syntax and retain the ... OrderedDict as a regular argument See Question&Answers more detail:os...

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

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