Recent questions tagged Python

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python - Converting different date time formats to MM/DD/YYYY format in pandas dataframe

I have a date column in a pandas.DataFrame in various date time formats and stored as list object, like the following: ... .e., August 1, 2002). 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 change the plot order of the categorical x-axis

I got a dataframe which looks like below: df: Time of Day Season value Day Shoulder 30.581606 Day Summer 25. ... help me in fixing the 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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python - selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service chromedriver.exe while opening chrome browser

I have following environment at my local Chrome 67 Python 3.5.0 Selenium 3.12.0 I have downloaded chromedriver ... resolve this error. 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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289 views

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python - Rotate existing matplotlib markers?

I'm aware of this answer, Is it possible to control matplotlib marker orientation?, and the marker documentation, ... long axis is horizontal. 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 - Override Django module class method

In my Django application I have a module installed via pip. I need to override some method located in site- ... code in site-packages directory? See Question&Answers more detail:os...

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

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386 views

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python - How to access a geometry (point) field in PostGIS database from Django?

In my project I am using PostgreSQL/PostGIS as the database and Django with django.contrib.gis configured. The ... the string value is output. See Question&Answers more detail:os...

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

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550 views

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python - Passing CPLEX Parameters to CVXPY

How do i pass tolerances and other parameters through CVXPY when using the CPLEX solver? from cvxpy import Problem, ... solvers but not CPLEX. 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.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet. file init

django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet. Exception appeared when I added: import signals in init. ... * kwargs): .... 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 - Fast conversion of timestamps for duration calculation

We've got a log analyzer which parses logs on the order of 100GBs (my test file is ~20 million lines ... unless someone has another bright idea? 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 - Why doesn't the .bind() method work with a frame widget in Tkinter?

This code is an attempt to bind a command to a frame, ie. when the "Escape" key is pressed, the window ... t what I've written above work? See Question&Answers more detail:os...

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

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559 views

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python - PyTesseract OCR unable to read digits from a simple image

I'm trying to get PyTesseract OCR to read digits from this simple and well cropped Image, but for some reason it's ... ('cur.jpg') Output : [] See Question&Answers more detail:os...

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

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277 views

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python - PySide (or PyQt) signals and slots basics

Consider a simple example like this which links two sliders using signals and slots: from PySide.QtCore import * ... the simple example above. See Question&Answers more detail:os...

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

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430 views

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python - Execution time of AdaBoost with SVM base classifier

I just made a Adaboost Classifier with these parameters, 1.n_estimators = 50 2.base_estimator = svc (support vector ... better way to do 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 - what is different between groupby.first, groupby.nth, groupby.head when as_index=False

Edit: the rookie mistake I made in string np.nan having pointed out by @coldspeed, @wen-ben, @ALollz. Answers ... , is there any differences? See Question&Answers more detail:os...

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

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683 views

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python 2.7 - 3 dimensional numpy array to multiindex pandas dataframe

I have a 3 dimensional numpy array, (z, x, y). z is a time dimension and x and y are coordinates. I ... fairly simple but I cant figure it out. See Question&Answers more detail:os...

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

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528 views

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python - Replace a string in a textarea using selenium, "not reachable by keyboard"

I'd like to modify part of the text in a textarea with Selenium. The textarea seems almost as if it were ... "_new_") Appreciate any pointers. See Question&Answers more detail:os...

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

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159 views

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python - Why the elements of numpy array not same as themselves?

How do I explain the last line of these? >>> a = 1 >>> a is a True >>> a = [1, 2, 3] >> ... that everything is at least "is" that thing itself! See Question&Answers more detail:os...

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

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420 views

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python - 0-23 hour military clock to standard time (hh:mm)

How would I go about this process? Let's say that someone types in "3:5", and I should be able to get ... :" + minutes + setting) timeConvert() See Question&Answers more detail:os...

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

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341 views

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python - How to remove the innermost level of nesting in a list of lists of varying lengths

I'm trying to remove the innermost nesting in a list of lists of single element length lists. Do you know a relatively easy ... 7, 8], [11, 12]] See Question&Answers more detail:os...

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

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213 views

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python - Different result for std between pandas and numpy

I am trying to subtract every element in the column from its mean and divide by the standard deviation. I did ... or am I making some blunder? See Question&Answers more detail:os...

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

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179 views

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python - Window inside window

I'm not very good with tkinter of python, but i would like to know if theres a way to make a window inside ... it out. Thank you very much. See Question&Answers more detail:os...

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

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229 views

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python - Django; How can i change the table name used by i.e django.contrib.sessions?

How can i change the info in the Meta class in i.e 'django.contrib.sessions.models' , so that my project can ... of the app is the same? 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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215 views

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python - BeautifulSoup does not returns all data

I'm trying to parse some data for the moon phase today using Python's library BeautifulSoup. from bs4 import ... > </div> Any idea? See Question&Answers more detail:os...

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

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388 views

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python - sqlalchemy different value from `len(query.all())` and `query.count()`

This is an example code. A Document has many Comment(s) PostComment extends Comment (with sqlalchemy polymorphic ... Query would return.". See Question&Answers more detail:os...

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

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436 views

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python - Save pandas data frame as csv on to gcloud storage bucket

from pyspark import SparkContext, SparkConf from pyspark.sql import SparkSession import gc import pandas as pd import datetime ... do I do 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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349 views

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python 3.x - Porting a sub-class of python2 'file' class to python3

I have a legacy code that calls class TiffFile(file). What is the python3 way to call it? I tried to ... object.__init__() takes no parameters See Question&Answers more detail:os...

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

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306 views

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python - __del__ on exit behavior

I have some test.py file: class A: def __init__(self): print("A init") def __del__(self): print("A ... on receive SIGTERM or SIGKILL from OS? See Question&Answers more detail:os...

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

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573 views

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python - scipy.integrate.solve_ivp vectorized

Trying to use the vectorized option for solve_ivp and strangely it throws an error that y0 must be 1 dimensional. MWE ... scipy.version '1.2.1' See Question&Answers more detail:os...

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

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