Recent questions tagged Python

0 votes

196 views

1 answer

python - Finding the length of an mp3 file

So i have the code: import glob,os import random path = 'C:\Music\' aw=[] for infile in glob.glob( ... anyone know a solution to my probleme? See Question&Answers more detail:os...

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

0 votes

558 views

1 answer

python - Why does PyCharm give unresolved reference errors on some Numpy imports?

The following line in PyCharm is flagged by on-the-fly inspection with unresolved reference errors for each import. ( ... 2 Numpy 1.8 Thanks! See Question&Answers more detail:os...

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

0 votes

203 views

1 answer

python - Pandas dataframe hide index functionality?

Is it possible to hide the index when displaying pandas dataframes, so that only the column names appear at the ... using with nbconvert). Ta. See Question&Answers more detail:os...

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

0 votes

455 views

1 answer

python - Non-recursive os.walk()

I'm looking for a way to do a non-recursive os.walk() walk, just like os.listdir() works. But I need to ... . Any idea? Thank you in advance. See Question&Answers more detail:os...

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

0 votes

285 views

1 answer

python - changing the values of the diagonal of a matrix in numpy

how can I change the values of the diagonal of a matrix in numpy? I checked Numpy modify ndarray diagonal, but ... values of the diagonal to 0. See Question&Answers more detail:os...

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

0 votes

312 views

1 answer

python - Finding common elements between multiple dataframe columns

Hope you could help me. I am new to python and pandas, so please bear with me. I am trying to find the ... know where I am going wrong. Cheers See Question&Answers more detail:os...

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

0 votes

220 views

1 answer

python - Django filter with OR condition using dict argument

I have a function on my Django app where I perform some Queryset actions and set it's result to Memcache. ... Is there any approach for this? See Question&Answers more detail:os...

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

0 votes

363 views

1 answer

python - pandas rolling sum of last five minutes

Assume I have below data frame Date, A 2014-11-21 11:00:00, 1 2014-11-21 11:03:00, 4 2014- ... rolling_sum method in pandas? Thanks in advance. See Question&Answers more detail:os...

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

0 votes

165 views

1 answer

python - PyObjC on Xcode 4

Xcode 3 had templates for building Cocoa subclasses in Python. I've recently upgraded to Xcode 4 but I cannot ... Xcode 4. Does anyone know? See Question&Answers more detail:os...

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

0 votes

292 views

1 answer

python - Why is numpy's einsum slower than numpy's built-in functions?

I've usually gotten good performance out of numpy's einsum function (and I like it's syntax). @Ophion' ... NOT AVAILABLE mkl_info: NOT AVAILABLE See Question&Answers more detail:os...

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

0 votes

374 views

1 answer

python - Slow performance of POS tagging. Can I do some kind of pre-warming?

I am using NLTK to POS-tag hundereds of tweets in a web request. As you know, Django instantiates a request ... tagged = nltk.pos_tag( tokens) See Question&Answers more detail:os...

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

0 votes

299 views

1 answer

python - Concatenate all columns in a pandas dataframe

I have multiple pandas dataframe which may have different number of columns and the number of these columns ... df[col_names[each_col_ind]] See Question&Answers more detail:os...

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

0 votes

228 views

1 answer

python - "%s" % format vs "{0}".format() vs "?" format

In this post about SQLite, aaronasterling told me that cmd = "attach "%s" as toMerge" % "b.db" : ... are the differences between those three? See Question&Answers more detail:os...

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

0 votes

134 views

1 answer

python - Creating a dictionary from a string

I have a string in the form of: s = 'A - 13, B - 14, C - 29, M - 99' and so on (the length ... ? Iterating over this seems to much of a pain. See Question&Answers more detail:os...

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

0 votes

277 views

1 answer

python - AttributeError: 'module' object has no attribute (when using cPickle)

I am trying to load the function in a remote environment using cPickle. But I got the error "the 'module' ... object has no attribute 'fun1' See Question&Answers more detail:os...

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

0 votes

564 views

1 answer

python - Connect to MSSQL Database using Flask-SQLAlchemy

I'm trying to connect to a local MSSQL DB through Flask-SQLAlchemy. Here's a code excerpt from my ... would be highly appreciated. Thanks See Question&Answers more detail:os...

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

0 votes

259 views

1 answer

python - Using client certificates with urllib2

I need to create a secure channel between my server and a remote web service. I'll be using HTTPS with ... the remote certificate is correct? See Question&Answers more detail:os...

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

0 votes

380 views

1 answer

python to arduino serial read & write

I'm trying to "ping pong" info back and forth between some python code and arduino code. I want to send two ... after "Message from arduino: ". See Question&Answers more detail:os...

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

0 votes

421 views

1 answer

python - how to get rid of pandas converting large numbers in excel sheet to exponential?

In the excel sheet , i have two columns with large numbers. But when i read the excel file with read_excel( ... format? Thanks Output in Pandas See Question&Answers more detail:os...

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

0 votes

216 views

1 answer

python - generalised insert into sqlalchemy using dictionary

I'm building an application in Flask and I have several SQLAlchemy models defined. I have a dictionary with key/ ... db.Column(db.String(80)) See Question&Answers more detail:os...

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

0 votes

130 views

1 answer

python - Caffe didn't see hdf5.h when compiling

I am having trouble when installing Caffe Deep Learning Framework on Python: When I run make command at caffe directory ... util/hdf5.o] Error 1 See Question&Answers more detail:os...

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

0 votes

445 views

1 answer

python - Find coordinate of the closest point on polygon in Shapely

Say I have the following Polygon and Point: >>> poly = Polygon([(0, 0), (2, 8), (14, 10), ( ... this? Is there a more straightforward method? See Question&Answers more detail:os...

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

0 votes

288 views

1 answer

python - pandas, melt, unmelt preserve index

I've got a table of clients (coper) and asset allocation (asset) A = [[1,2],[3,4],[5,6]] idx = ... 'coper' part of my indexing while using melt? See Question&Answers more detail:os...

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

0 votes

612 views

1 answer

python - What does it mean "weakly-referenced object no longer exists"?

I am running a Python code and I get the following error message: Exception exceptions.ReferenceError: 'weakly- ... crawler('searchindex.db') See Question&Answers more detail:os...

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

0 votes

412 views

1 answer

python - Tensorflow Slim: TypeError: Expected int32, got list containing Tensors of type '_Message' instead

I am following this tutorial for learning TensorFlow Slim but upon running the following code for Inception: ... help would be appreciated. See Question&Answers more detail:os...

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

0 votes

511 views

1 answer

python - Why do HTTPS requests produce SSL CERTIFICATE_VERIFY_FAILED error?

Here is my Python code: import requests requests.get('https://google.com') This is the error: requests. ... OS is Windows 7 Professional. See Question&Answers more detail:os...

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

0 votes

478 views

1 answer

python - Element-wise array maximum function in NumPy (more than two arrays)

I'm trying to return maximum values of multiple array in an element-wise comparison. For example: A = array([ ... for more than two arrays? See Question&Answers more detail:os...

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

0 votes

362 views

1 answer

python - Creating large Pandas DataFrames: preallocation vs append vs concat

I am confused by the performance in Pandas when building a large dataframe chunk by chunk. In Numpy, we (almost) ... ). Per @Joris's suggestion. See Question&Answers more detail:os...

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

Categories

Just Browsing Browsing

Most popular tags