Recent questions tagged PYTHON

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python 2.7 - Why doesn't os.chflags() work under Linux?

I'm using Python 2.7.9 under Debian GNU/Linux 8 (jessie) 64-bit. I just tried to change file attributes ... 's job. Could anybody elaborate 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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245 views

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python pandas groupby calculate change

I want to calculate the value change by group. This is the python pandas dataframe df I have: Group | ... is greatly appreciated! Thank you See Question&Answers more detail:os...

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

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331 views

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python - Creating constant value in Keras

I am trying to create a constant variable inside a keras model. What I was doing till now is to pass it as ... . Is it possible to do that? See Question&Answers more detail:os...

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

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295 views

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python - PyQt run time issue

I want my code to run by showing the qtwidget and then running the forloop, but it runs the forloop then shows ... == "__main__": main() See Question&Answers more detail:os...

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

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281 views

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python - How are built-in types protected from overwriting (assigning to) their methods?

I noted that int.__str__ = lambda x: pass yields an error. I can see, why that is forbidden. But how? Can I use that in "normal" code? See Question&Answers more detail:os...

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

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1.8k views

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python - Reading multiple csv files from S3 bucket with boto3

I need to read multiple csv files from S3 bucket with boto3 in python and finally combine those files in single ... I do it in python? See Question&Answers more detail:os...

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

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363 views

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python - Pass hdf5 file to h5py as binary blob / string?

How can I bypass disk I/O in h5py? Currently I have to do something like this: msg = socket.recv() fp = open ... Cython if it comes to 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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502 views

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python - How do I combine two keras generator functions

I am trying to implement a Siamese network in Keras and I want to apply image transformations to the 2 input images ... len(pair_df)/16): break See Question&Answers more detail:os...

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

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268 views

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python - Using memmap files for batch processing

I have a huge dataset on which I wish to PCA. I am limited by RAM and computational efficency of PCA. ... the file to IncrementalPCA.fit(). See Question&Answers more detail:os...

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

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457 views

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python - How to make matplotlib/pandas bar chart look like hist chart?

Plotting Differences between bar and hist Given some data in a pandas.Series , rv, there is a difference between ... than the original data). See Question&Answers more detail:os...

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

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415 views

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python - Google App Engine: ImportError: No module named appengine.ext

I am trying to write a test for my GAE programme which uses the datastore. Following Google's Documentation, I ... reload the path or 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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985 views

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python - Is there a way to take screenshot of a window in pyqt5 or qt5?

#!/usr/bin/env python3 from PyQt5.QtGui import * from PyQt5.QtWidgets import QApplication, QWidget import sys ... need a crossplataform method.. See Question&Answers more detail:os...

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

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300 views

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python - How to sum the elements of N lists?

can anybody please give me a hint how to aggregate (sum up) specific elements of multiple lists? For example ... 's in c_agent_*[whatever] See Question&Answers more detail:os...

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

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560 views

1 answer

python - convert a SAS datetime in Pandas

I am using Pandas to read a Sas dataset using read_sas There is a datetime variable in the SAS dataset, ... is unsliceable Any ideas? 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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376 views

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python - Define a feed_dict in c++ for Tensorflow models

This question is related to this one: Export Tensorflow graphs from Python for use in C++ I'm trying to ... c++ purposes without placeholders? 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

1 answer

python - Getting py2exe to work with zope.interface

I have a Python app based on Twisted and PyGTK. Twisted itself depends on zope.interface, and I don't import it ... I get py2exe to build 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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399 views

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python - How safe is expression evaluation using eval?

I am building a website where I have a need that user should be able to evaluate some expression based from the ... , can user do bad things? See Question&Answers more detail:os...

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

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633 views

1 answer

python - Search a word in a text string in Excel sheet using openpyxl

I'm trying to search for a word in a cell that has a text string that looks like this (Energy;Green Buildings; ... = 5 wb.save("Test61.xlsx") 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

1 answer

python - Reading CSV files in a loop using pandas, then concatenating them

I have 10 csv files, named data_run1_all.csv, data_run2_all.csv, ..., data_run10_all.csv. CSV files have same ... be much shorter and readable. See Question&Answers more detail:os...

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

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566 views

1 answer

python - How to load a model saved in joblib file from Google Cloud Storage bucket

I want to load a model which is saved as a joblib file from Google Cloud Storage bucket. When it is in ... same task with Google Cloud Storage? See Question&Answers more detail:os...

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

0 votes

492 views

1 answer

python - Fixing invalid JSON octal escape

KISSmetrics generates invalid JSON strings I need to parse. I'm getting tons of errors like ERROR 2013-03-04 04: ... it? Thanks for your help. See Question&Answers more detail:os...

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

0 votes

269 views

1 answer

python - Separate image of text into component character images

I'd like to separate an image of text into it's component characters, also as images. For example, using the ... look at OpenCV. Sample image: See Question&Answers more detail:os...

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

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725 views

1 answer

python - Write BigQuery results to GCS in CSV format using Apache Beam

I am pretty new working on Apache Beam , where in I am trying to write a pipeline to extract the data from ... ().setLevel(logging.INFO) run() See Question&Answers more detail:os...

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

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308 views

1 answer

python - Updating marker style in scatter plot with matplotlib

I am working on an interactive plotting application which requires users to select data points from a matplotlib scatter ... .show() Any ideas? See Question&Answers more detail:os...

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

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742 views

1 answer

python - pandas groupby concatenate strings in multiple columns

I have this pandas data frame: df = DataFrame({'id':['a','b','b','b','c','c'], 'category':['z','z','x','y',' ... id 0 z 1 a 1 zxy 2 b 2 y 12 c See Question&Answers more detail:os...

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

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530 views

1 answer

python - How can I choose the language, using Flask + Babel?

Now I'm developing a project, which should support two languages: English, as default, and Russian. It's ... best practice to realise 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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464 views

1 answer

python - Save Pandas data frame to Google Cloud bucket

I want to save pandas data frame directly to Google Cloud Storage. I tried different ways using write-a-pandas- ... 'close' Thanks, Raghunath. See Question&Answers more detail:os...

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

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524 views

1 answer

python - I don´t understand Normal Polish Notation (NPN or PN). How to build a complex domain in Odoo?

Could someone translate the following polish notation to its SQL counterpart: ['|', '&', ('is_company',' ... ' AND customer_type_id <> False See Question&Answers more detail:os...

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

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