Recent questions tagged Python

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python - Invalid requirements.txt on deploying django app to aws beanstalk

I have been deploying my app without any issues to the beanstalk environment until my latest commit. ... value: ideatory.settings See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Find index of all rows with null values in a particular column in pandas dataframe

I have been worried about how to find indices of all rows with null values in a particular column of a pandas ... row with null values in A See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Check a command's return code when subprocess raises a CalledProcessError exception

I want to capture the stdout stream of a shell command in a python (3) script, and being able, at the same time ... don't know where I am wrong. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to convert a Numpy 2D array with object dtype to a regular 2D array of floats

As part of broader program I am working on, I ended up with object arrays with strings, 3D coordinates and etc ... ] = obj_array[row,1] Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Generator Comprehension different output from list comprehension?

I get different output when using a list comprehension versus a generator comprehension. Is this expected behavior or a ... .42.1)] on darwin See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to create a multiline entry with tkinter?

Entry widgets seem only to deal with single line text. I need a multiline entry field to type in email messages. ... any idea how to do that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Setting up a virtualenv: No module named 'pip'

I have a fresh install of Python 3.3.4 on a Windows Server 2008 R2 machine. I've successfully installed the ... the --system-site-packages flag. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to retrieve colorbar instance from figure in matplotlib

all. I want to update the colorbar of a figure when the imagedata is changed. So something like: img = misc ... the Axes/Figure stuff.Thank you! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python csv, writing headers only once

So I have a program that creates CSV from .Json. First I load the json file. f = open('Data.json') data ... that header is only written once?. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Tkinter button command activates upon running program?

I'm trying to make a build retrieval form, and seem to have issues with the buttons... I'm a novice at ... app = App(root) root.mainloop() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Finding the length of an mp3 file

So i have the code: import glob,os import random path = 'C:\Music\' aw=[] for infile in glob.glob( ... anyone know a solution to my probleme? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to calculate date difference in pyspark?

I have data like this: df = sqlContext.createDataFrame([ ('1986/10/15', 'z', 'null'), ('1986/10/ ... on stackoverflow but neither of them works. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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388 views

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python - Why is the quality of JPEG images produced by PIL so poor?

The JPEG images created with PIL (1.1.7) have very poor quality. Here is an example: Input: https://s23. ... happens and how it can be solved? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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153 views

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python - ImportError: cannot import name 'ensure_dir_exists'

I update the Jupyter notebook from the old version to latest 5.3.1. However, when I try to launch ... : cannot import name 'ensure_dir_exists' See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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255 views

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python - Cython package with __init__.pyx: Possible?

Is it possible to create a Python 2.7 package using __init__.pyx (compiled to __init__.so)? If so how? I ... versions). Was there a regression? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

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python - How do you specify a default for a Django ForeignKey Model or AdminModel field?

How can I set a default value on a ForeignKey field in a django Model or AdminModel? Something like this (but ... it doesn't seem possible. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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118 views

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python - How to suppress matplotlib warning?

I am getting an warning from matplotlib every time I import pandas: /usr/local/lib/python2.7/site-packages/matplotlib ... and matplotlib==1.5.0 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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217 views

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python - Missing values in scikits machine learning

Is it possible to have missing values in scikit-learn ? How should they be represented? I couldn't find any documentation about that. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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106 views

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python - Internal Server Error when using Flask session

I want to save an ID between requests, using Flask session cookie, but I'm getting an Internal Server Error as ... when I perform the request? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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272 views

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python - How to do group by on a multiindex in pandas?

Below is my dataframe. I made some transformations to create the category column and dropped the original column it was ... 11-04', 'Movies')] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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145 views

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python - Why is float() faster than int()?

Experimenting with some code and doing some microbenchmarks I just found out that using the float function on a string ... it in the sources. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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158 views

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python - Matplotlib - Tcl_AsyncDelete: async handler deleted by the wrong thread?

I'm asking this question because I can't solve one problem in Python/Django (actually in pure Python it' ... /destroying plots in Python/Django. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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211 views

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python - Difference between installation libraries of Tensorflow GPU vs CPU

Recently, I wanted to move my Python libraries to a pendrive to keep all the libraries constant while ... as setting CUDA_VISIBLE_DEVICES=-1? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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352 views

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python - Matplotlib Build Problem: Error C1083: Cannot open include file: 'ft2build.h'

ft2build.h is located here: C:Program FilesGnuWin32include Initially, I made the same mistake as here: Fatal Error C1083 ... this is Python 2.6 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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299 views

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python - How do I return a JSON array with Bottle?

I'm writing an API using Bottle, which so far has been fantastic. However, I've run up against a small hurdle ... a JSON array in this manner? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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137 views

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python - Pycharm exit code 0

Whenever I run any code, my console always ends with Process finished with exit code 0. For example, if i ... make the output just "hellow"? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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147 views

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python - "Models aren't loaded yet" error while populating in Django 1.8 or later

I am using this code to populate my database: import os def populate(): python_cat = add_cat('Python') add_page( ... so can anyone help me here? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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629 views

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python - Is there an "ungroup by" operation opposite to .groupby in pandas?

Suppose we take a pandas dataframe... name age family 0 john 1 1 1 jason 36 1 2 jane 32 1 3 jack ... append the output to the empty dataframe See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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