Recent questions tagged Python

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python - non-blocking socket,error is always

sock.setblocking(0) try: data = sock.recv(1024) except socket.error, e: if e.args[0] == errno.EWOULDBLOCK: ... 'EWOULDBLOCK',i don't know why? See Question&Answers more detail:os...

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

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542 views

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python - How to connect to a cluster in Amazon Redshift using SQLAlchemy?

In Amazon Redshift's Getting Started Guide, it's mentioned that you can utilize SQL client tools that are ... .amazonaws.com:5439/shippy' See Question&Answers more detail:os...

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

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365 views

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python 3.x - Pandas select unique values from column

I was able to ingest a csv in jupyter notes by doing this : csvData= pd.read_csv("logfile.csv") My data looks like ... ','222.222.222.222'...] See Question&Answers more detail:os...

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

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439 views

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python - Check if float is close to any float stored in array

I need to check if a given float is close, within a given tolerance, to any float in an array of floats. ... in arr_f within tolerance t' break See Question&Answers more detail:os...

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

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738 views

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python - Pip: ImportError: Entry point ('console_scripts', 'pip') not found

I install pip with: $ sudo apt-get install python-setuptools, python-pip But when I try install something with pip ... ) not found why?? 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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326 views

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python - How to remove strings present in a list from a column in pandas

I have a dataframe df, import pandas as pd df = pd.DataFrame( { "ID": [1, 2, 3, 4, 5], "name": [ ... 2 3 is example 3 4 stackoverflow 4 5 World See Question&Answers more detail:os...

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

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524 views

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python - Can I make ipython exit from the calling code?

I have some code like this: form IPython import embed for item in my_item_list: embed() If I then run this ... shell and killing the process? See Question&Answers more detail:os...

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

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779 views

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python - NoBrokersAvailable: NoBrokersAvailable-Kafka Error

i have already started to learn Kafka. Trying basic operations on it. I have stucked on a ... .errors.NoBrokersAvailable: NoBrokersAvailable See Question&Answers more detail:os...

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

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835 views

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python - Module subprocess has no attribute 'STARTF_USESHOWWINDOW'

Hi Stack Overflow users, I've encountered a frustrating problem, can't find the answer to it. Yesterday I was ... like two pages of code please See Question&Answers more detail:os...

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

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674 views

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python - How to decrease hatch density in matplotlib

I need to decrease the density of the hatch in a bar made with matplotlib. The way I add the hatches: kwargs ... can you decrease the density?! See Question&Answers more detail:os...

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

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449 views

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python - why UniqueConstraint doesn't work in flask_sqlalchemy

I want an alternative of Django's unique_together in flask, seems UniqueConstraint is what I'm looking for, but doesn ... what's wrong with 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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506 views

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python - Printing all the values from multiple lists at the same time

Suppose I have 3 lists such as these l1 = [1,2,3] l2 = [4,5,6] l3 = [7,8,9] how do I get ... and I Call the above function inside the for loop. See Question&Answers more detail:os...

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

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619 views

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python - How do I fix/debug this Multi-Process terminated worker error thrown in scikit learn

I recently set up a new machine to aid in decreasing run times for fitting models and data wrangling. I did some ... 14 (+8), average=409 B See Question&Answers more detail:os...

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

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461 views

1 answer

python - Numpy gcd function

Does numpy have a gcd function somewhere in its structure of modules? I'm aware of fractions.gcd but thought a numpy ... hasn't worked for 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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348 views

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python - Setting a class __name__ declaratively

Why can't you override a class name declaratively, e.g. to use a class name which is not a valid identifier ... of a class definition block)? See Question&Answers more detail:os...

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

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324 views

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python - How to join two string with a new line between them?

I have two strings like this: str1 = "my fav fruit apple" str2 = "my fav vegetable carrot" I want to join ... between them. How to do 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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625 views

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python - Keras reports TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'

I'm a beginner in Keras and just write a toy example. It reports a TypeError. The code and error are as follows: ... So how can I deal with 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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432 views

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python - Pycharm set the correct environment variable PATH

I'm executing with pycharm the following: print(os.environ["PATH"]) # returns '/usr/bin:/bin:/usr/sbin:/sbin ... this is not working 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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504 views

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python - difference between from x import y and import x.y

So I am confused as what the difference is...Here is some code to display my confusion: >>> import collections ... the error, feel free! 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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774 views

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python - IOError: [Errno 13] Permission denied

I have this piece of code to create a .json file to store python data. When i run it in my server i get this ... working. 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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393 views

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python - How can box plot be overlaid on top of swarm plot in Seaborn?

I am trying to plot swarm plots and box plots together using matplotlib and Seaborn. I found how to plot them ... just put the two together. 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 - Can't run pip: UnicodeDecodeError

I have trouble using pip. For example: pip install numpy --upgrade Gives me the following error: Collecting numpy ... Thank you 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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302 views

1 answer

python - differences for creating set using set() or {}

This difference is confusing me: >>> s = "()())()" >>> print set(s) set([')', '(']) >>> print {s} set(['()())()']) Why? See Question&Answers more detail:os...

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

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512 views

1 answer

python - Inserting list into a cell - why does loc ACTUALLY work here?

We are aware that the standard method of setting a single cell is using at or iat. However, I noticed some ... documented behaviour, or a bug? See Question&Answers more detail:os...

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

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684 views

1 answer

python - Split unicode string into 300 byte chunks without destroying characters

I want to split u"an arbitrary unicode string" into chunks of say 300 bytes without destroying any characters. The ... How would 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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476 views

1 answer

python - Auto generate doctest output with Sphinx extension

I think I am missing something about the sphinx extension for doctest. The typical example in the documentation ... would be very convenient! See Question&Answers more detail:os...

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

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898 views

1 answer

python - Get Image File Size From Base64 String

I'm working on a python web service. It calls another web service to change the picture of a profile. It connects ... a 4 MB or smaller image? See Question&Answers more detail:os...

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

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934 views

1 answer

python - Numpy.dot() dimensions not aligned

I'm having trouble giving the right input to the scipy.signal.dlsim method. The method requires the 4 state ... 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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