Recent questions tagged PYTHON

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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)

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571 views

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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)

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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)

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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)

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292 views

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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)

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321 views

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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)

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226 views

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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)

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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)

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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)

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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)

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383 views

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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)

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307 views

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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)

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235 views

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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)

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144 views

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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)

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285 views

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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)

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572 views

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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)

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266 views

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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)

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391 views

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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)

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432 views

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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)

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226 views

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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)

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137 views

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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)

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453 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)

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297 views

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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)

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620 views

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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)

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421 views

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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)

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522 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)

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493 views

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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)

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369 views

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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)

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