Recent questions tagged Python

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I want to add an integer to my pandas.Series Here is my code: import pandas as pd input = pd.Series([1,2,3 ... 'index' How can I fix 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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python - How to send photo on telegram bot

i'm just implementing a simple bot who should send some photos and videos to my chat_id. Well, i'm using python ... . Where am I wrong? 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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360 views

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python - Celery, run task once at a specified time

How can I run a celery task at a given time, but only once? I read the documentation and couldn't find any example of 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 to use groupby in pandas to calculate a percentage / proportion total based on a criteria in another column

I'm trying to work out how to use the groupby function in pandas to work out the proportions of values per ... anyone advise how 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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577 views

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python - Pandas rank by multiple columns

I am trying to rank a pandas data frame based on two columns. I can rank it based on one column, but how can to rank ... 8 6 2016-12-02 0 0 S6 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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398 views

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python 3.x - Monitoring the asyncio event loop

I am writing an application using python3 and am trying out asyncio for the first time. One issue I have ... rather than total execution time. See Question&Answers more detail:os...

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

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235 views

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python - Determining Pandas Column DataType

Sometimes when data is imported to Pandas Dataframe, it always imports as type object. This is fine and well for ... The type should be string? See Question&Answers more detail:os...

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

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628 views

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python - merge rows pandas dataframe based on condition

Hi have a dataframe df containing a set of events (rows). df = pd.DataFrame(data=[[1, 2, 7, 10], [10, 22, 1, ... 0 1 42 10 50 1 100 162 36 22 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 make two django projects share the same database

I need to make two separate Django projects share the same database. In project_1 I have models creating ... to project_1/development.db. 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 - Cross database join in sqlalchemy

Is there a way in SQLAlchemy to do cross-database joins. To be specific, here is my use case: Schema db1. ... if it is possible in SQLAlchemy. See Question&Answers more detail:os...

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

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510 views

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python - Slicing multiple column ranges from a dataframe using iloc

I have a df with 32 columns df.shape (568285, 32) I am trying to rearrange the columns in a specific way, and ... this the right way to do 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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303 views

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python - numpy: unique list of colors in the image

I have an image img: >>> img.shape (200, 200, 3) On pixel (100, 100) I have a nice color: >>> img[ ... (), but somehow I am using this 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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262 views

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python - How to read multiple json files into pandas dataframe?

I'm having a hard time loading multiple line delimited JSON files into a single pandas dataframe. This is the ... couple lines in each file. 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 - Weighted correlation coefficient with pandas

Is there any way to compute weighted correlation coefficient with pandas? I ... -moment_correlation_coefficient#Weighted_correlation_coefficient See Question&Answers more detail:os...

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

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328 views

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python - SQLAlchemy: Relation table with composite primary key

I have a set of tables that look like: workflows = Table('workflows', Base.metadata, Column('id', Integer ... to set the workflow_id correctly? 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 - How do I find the shortest overlapping match using regular expressions?

I'm still relatively new to regex. I'm trying to find the shortest string of text that matches a ... contains a substring that matches? 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 - How to find rectangle contour of a rectangle with round corner?

I'm trying to find the contour of a rectangle object with round corner in a image. I tried HoughLinesP and ... t know how to deal with. 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 - Don't show long options twice in print_help() from argparse

I have the following code: parser = argparse.ArgumentParser(description='Postfix Queue Administration Tool', prog=' ... something 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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380 views

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python - Easy_install and Pip doesn't work

Easy_install and Pip doesn't work anymore on python 2.7, when I try to do: sudo easy_install pip I get: ... ! (I tried already this post) 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 - Solving Quadratic Equation

My program doesn't seem to give me the right solutions. Sometimes it does, sometimes it doesn't. I can't find my error. ... : ", x1, " and", x2 See Question&Answers more detail:os...

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

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233 views

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python - MySQLdb connection problems

I'm having trouble with the MySQLdb module. db = MySQLdb.connect( host = 'localhost', user = 'root', passwd = '', db ... >>> I'm confused... :( See Question&Answers more detail:os...

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

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371 views

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python - numpy.unique gives wrong output for list of sets

I have a list of sets given by, sets1 = [{1},{2},{1}] When I find the unique elements in this list ... something wrong in the way I have done? See Question&Answers more detail:os...

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

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342 views

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python 2.7 - SparkSQL on pyspark: how to generate time series?

I'm using SparkSQL on pyspark to store some PostgreSQL tables into DataFrames and then build a query that ... or some DataFrame methods? See Question&Answers more detail:os...

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

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338 views

1 answer

python - argparse: flatten the result of action='append'

I'd like to make a script that supports an argument list of the form ./myscript --env ONE=1,TWO=2 --env THREE=3 Here ... 'TWO=2'], ['THREE=3']] See Question&Answers more detail:os...

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

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302 views

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python - Django project models.py versus app models.py

I am learning Django and I am trying to understand the use of models.py in the project versus the application. ... models.py? Thanks in advance. See Question&Answers more detail:os...

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

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222 views

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python - Where are math.py and sys.py?

I found all the other modules in Python33/Lib, but I can't find these. I'm sure there are others "missing" ... . Are they built-in 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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232 views

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python - Same module is being imported in different files

Is it a bad practice to do this: In first.py: import second import mymodule In second.py: import mymodule ... not elegant nor Pythonic IMO. See Question&Answers more detail:os...

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

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344 views

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python - How to disable perspective in mplot3d?

Is it possible to disable the perspective when plotting in mplot3d, i.e. to use the orthogonal projection? See Question&Answers more detail:os...

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

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