Recent questions tagged Python

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python - Django admin change form load quite slow

One of my Django websites has following database models: In Django App common : class Collection(models.Model): ... to cause the problem? 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 - Conda and Visual Studio Code debugging

The goal is to be able to use my environment setup from Conda/Anaconda within the visual studio code debugger. ... to use my Conda environment? 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 do I iterate over the HTML attributes of a Beautiful Soup element?

How do I iterate over the HTML attributes of a Beautiful Soup element? Like, given: <foo bar="asdf" blah="123">xyz ... I want "bar" and "blah". 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 - ImportError: No module named pandas. Pandas installed pip

i use mac terminal to check my package: pip list i can find all packages include pandas but when i import pandas ... 't find the path of pandas 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 3.x - Django tutorial unicode not working

I have the following in my models.py import datetime from django.utils import timezone from django.db import models ... : Poll object 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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python - PySpark - String matching to create new column

I have a dataframe like: ID Notes 2345 Checked by John 2398 Verified by Stacy 3983 Double Checked on 2/23/17 by ... /23/17 by Marsha 0 0 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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python - SQLALchemy dynamic filter_by

I know you can build dynamic filters for queries for SQLAlchemy by supplying **kwargs to filter_by. For example filters ... and t.amount < 100; 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 3.x - Decompression 'SNAPPY' not available with fastparquet

I am trying to use fastparquet to open a file, but I get the error: RuntimeError: Decompression 'SNAPPY' not ... Any help would be 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 - Starmap combined with tqdm?

I am doing some parallel processing, as follows: with mp.Pool(8) as tmpPool: results = tmpPool.starmap( ... for starmap also? 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 - No module named google.protobuf

I am trying to run Google's deep dream. For some odd reason I keep getting ImportError: No module named google ... /lib/python2.7/site-packages. See Question&Answers more detail:os...

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

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722 views

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python - SystemExit: 2 error when calling parse_args() within ipython

I'm learning basics of Python and got already stuck at the beginning of argparse tutorial. I'm getting the ... could I fix this problem? See Question&Answers more detail:os...

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

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499 views

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python - Unable to fake terminal input with termios.TIOCSTI

Most of the code samples I've seen are trying to read from stdin without local echo. To do this they modify the " ... This is test ') fd.close() 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 - xgboost predict method returns the same predicted value for all rows

I've created an xgboost classifier in Python: train is a pandas dataframe with 100k rows and 50 features ... bug in the xgboost implementation? See Question&Answers more detail:os...

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

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136 views

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python - How to find the name of a variable that was passed to a function?

In C/C++, I have often found it useful while debugging to define a macro, say ECHO(x), that prints ... repetition always ends up irritating me. See Question&Answers more detail:os...

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

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362 views

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python - Convert UTF-8 octets to unicode code points

I have a set of UTF-8 octets and I need to convert them back to unicode code points. How can I do ... ] should be converted to 0x141 codepoint. See Question&Answers more detail:os...

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

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347 views

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python - Scrolling multiple Tkinter listboxes together

I have multiple Tkinter listboxes that I have scrolling together using a single scrollbar, but I'd ALSO like ... when the mousewheel is used. See Question&Answers more detail:os...

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

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407 views

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python - Evaluate UTF-8 literal escape sequences in a string in Python3

I have a string of the form: s = '\xe2\x99\xac' I would like to convert this to the character ? ... UTF-8 encoded file after processing. See Question&Answers more detail:os...

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

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227 views

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python - Dataframe transpose with pyspark in Apache Spark

I have a dataframe df that have following structure: +-----+-----+-----+-------+ | s |col_1|col_2|col_.. ... ()]).toDF() 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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130 views

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python - Convert string into a function call

I have a string variable with the exact name of a function, e.g. ran_test_opt = "random_aoi" The function ... would run the random_aoi function? 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 - Is there a standard class for an infinitely nested defaultdict?

Does anyone know if there's a standard class for an infinitely nestable dictionary in Python? I'm finding myself ... what this would be called. See Question&Answers more detail:os...

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

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279 views

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python - Adding row to pandas DataFrame changes dtype

The problem I have is that adding a row to DataFrame changes dtype of columns: >>> from pandas import ... functions that return new objects? See Question&Answers more detail:os...

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

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151 views

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python - gVim and multiple programming languages

My day job involves coding with Perl. At home I play around with Python and Erlang. For Perl I want to ... language or something of that sort? See Question&Answers more detail:os...

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

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184 views

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python - Why are closures broken within exec?

In Python 2.6, >>> exec "print (lambda: a)()" in dict(a=2), {} 2 >>> exec "print (lambda: a)()" ... the same situation in 3.1. What's going on? See Question&Answers more detail:os...

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

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652 views

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python - PIL - libjpeg.so.8: cannot open shared object file: No such file or directory

Compiled the libjpeg v8, PIL 1.1.7 and and import for _imaging works on the system Python, but spouts ... -incorrect-pil-installation-on-mac/ See Question&Answers more detail:os...

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

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263 views

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python - Matplotlib : making a colored markers legend from scratch

In Matplotlib, i'm trying to make a legend with colored "markers" like this one : this one has been made ... marker ? Thanks for your help ! See Question&Answers more detail:os...

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

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129 views

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python factory functions compared to class

Just working through learning python and started to look at nested/factory functions (simple example): def maker(N) ... ? memory? clean up? See Question&Answers more detail:os...

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

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581 views

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python - Generate a pandas dataframe from ordereddict?

I am trying to create a pandas dataframe from an ordereddict to preserve the order of the values. But for ... to ask any additional questions. See Question&Answers more detail:os...

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

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220 views

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python - Where can I download binary eggs with psycopg2 for Windows?

I'm looking for binary eggs with psycopg2's binaries for Windows but can't find any. On http://initd.org/ ... page. Am I missing 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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