Recent questions tagged Python

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I installed pytorch via conda install pytorch-cpu torchvision-cpu -c pytorch And I also tried pip3 install https:// ... How can I fix 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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python - How can I find out why subprocess.Popen wait() waits forever if stdout=PIPE?

I have a program that writes to stdout and possibly stderr. I want to run it from python, capturing the stdout and stderr ... i.e. "hit a key"). 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 store numpy arrays as tfrecord?

I am trying to create a dataset in tfrecord format from numpy arrays. I am trying to store 2d and 3d ... any help would be great! 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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python - call instance method using __func__

I am new to python, and I don't quite understand the __func__ in python 2.7. I know when I define a ... __func__? I get really confused now. 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 - What does this code mean: "print >> sys.stderr"

print >> sys.stderr, "Error in atexit._run_exitfuncs:" Why print '>>' in front of sys.stderr? 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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157 views

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python - Flask WTForms: Difference between DataRequired and InputRequired

What is difference between DataRequired and InputRequired in wtforms.valiadators I have some fields in my signup ... or InputRequired validator? 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 install lxml on Windows

I'm trying to install lmxl on my Windows 8.1 laptop with Python 3.4 and failing miserably. First off, I ... Gohlke index method would be great. 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 2.7 - Jupyter | The kernel appears to have died. It will restart automatically |

I have been running a particular python script for some time. All of the script had been running perfectly ... help will be much 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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python - Django JSONField filtering

I'm using PostgreSQL and this new field from Django 1.9, JSONField. So I got the following data: id|data 1 |[{' ... if x['animal'] == 'cat'] 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 - Time difference in seconds (as a floating point)

>>> from datetime import datetime >>> t1 = datetime.now() >>> t2 = datetime.now() >>> delta = t2 - t1 >>> ... .now() diff = time.time() - _t1 See Question&Answers more detail:os...

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

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460 views

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python - How to make FileField in django optional?

I have form with a textbox and filefield in django. It should let the use either paste the text into that ... the forms.FileField() optional? See Question&Answers more detail:os...

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

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285 views

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python - matplotlib and subplots properties

I'm adding a matplotlib figure to a canvas so that I may integrate it with pyqt in my application. I were ... of more properties for my plots. 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 - Rotate tick labels in subplot (Pyplot, Matplotlib, gridspec)

I am attempting to rotate the x labels of a subplot (created using GridSpec) by 45 degrees. I have tried ... help will be greatly 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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317 views

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python - unpacking an array of arguments in php

Python provides the "*" operator for unpacking a list of tuples and giving them to a function as arguments ... something different in PHP? See Question&Answers more detail:os...

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

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373 views

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python - Pipe Ipython magic output to a variable?

I want to run a bash script in my ipython Notebook and save the output as a string in a python ... %%bash some_command [options] foo bar See Question&Answers more detail:os...

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

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143 views

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python - how to call a function from another file?

Sorry basic question I'm sure but I can't seem to figure this out. Say I have this program , the file ... real file, I am printing a dictionary See Question&Answers more detail:os...

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

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305 views

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python - How do I get the client IP of a Tornado request?

I have a RequestHandler object for incoming post()s. How can I find the IP of the client making the request ... seem to have missed something. See Question&Answers more detail:os...

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

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123 views

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python - Change the values of a NumPy array that are NOT in a list of indices

I have a NumPy array like: a = np.arange(30) I know that I can replace the values located at positions indices=[2 ... a[ not in indices ] = 888 See Question&Answers more detail:os...

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

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401 views

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python - Write a raw binary file with NumPy array data

I'd like to save the contents of a numpy float array into a raw binary file as signed 16 bit integers. I tried ... . How do I do this? 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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773 views

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python 3.x - python3 pySerial TypeError: unicode strings are not supported, please encode to bytes:

In Python 3 I imported the pySerial library so I could communicate with my Arduino Uno by serial commands. It ... time.sleep(1) serialcmdw() See Question&Answers more detail:os...

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

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150 views

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python - Django : Filter query based on custom function

I've got a function built into my Django model class and I want to use that function to filter my query ... query, based on custom functions? See Question&Answers more detail:os...

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

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215 views

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python - Rename unnamed column pandas dataframe

My csv file has no column name for the first column, and I want to rename it. Usually, I would do data.rename( ... in the csv file, just ''. See Question&Answers more detail:os...

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

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147 views

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python - A way to output pyunit test name in setup()

Is there a way in python for a pyunit test to output the test it's currently running. Example: def setUp(self ... %s Finished" % (testname)) See Question&Answers more detail:os...

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

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106 views

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python - Install pip in docker

I'm not able to install pip in Docker. Here's my Dockerfile: FROM ubuntu:14.04 # Install dependencies RUN apt- ... 13.1 didn't change 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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261 views

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python 3.x - Why do most asyncio examples use loop.run_until_complete()?

I was going through the Python documentation for asyncio and I'm wondering why most examples use loop. ... multiple co-routines concurrently. See Question&Answers more detail:os...

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

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154 views

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python - Flask URL Route: Route Several URLs to the same function

I am working with Flask 0.9. Now I want to route three urls to the same function: /item/<int:appitemid> / ... : Will there be a better 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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425 views

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python - ImportError HDFStore requires PyTables No module named tables

import pandas as pd dfs = pd.HDFStore('xxxxx.h5') throws this error: "ImportError: HDFStore requires PyTables, "No ... to do solve this 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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241 views

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python - What does `**` mean in the expression `dict(d1, **d2)`?

I am intrigued by the following python expression: d3 = dict(d1, **d2) The task is to merge 2 dictionaries into a third one ... 'b': 2, 'd': 4} See Question&Answers more detail:os...

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

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