Recent questions tagged Python

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python - Are executables produced with Cython really free of the source code?

I have read Making an executable in Cython and BuvinJ's answer to How to obfuscate Python code effectively? ... to extract Python Source Code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Scraping Data from a website which uses Power BI - retrieving data from Power BI on a website

I want to scrape data from this page (and pages similar to it): https://cereals.ahdb.org.uk/market-data- ... Power BI data in JSON format. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - sqlite3.OperationalError: no such column:

This is a very basic question and I know there are security issues with this code and it should be using ... () userSignUp() Much thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Convert pandas.groupby to dict

Consider, dataframe d: d = pd.DataFrame({'a': [0, 2, 1, 1, 1, 1, 1], 'b': [2, 1, 0, 1, 0, ... in d.groupby("a")} What are the other solutions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How exactly does the "reflect" mode for scipys ndimage filters work?

I'm failing to understand exactly how the reflect mode handles my arrays. I have this very simple array: import numpy ... to that of size 3. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - BaseHTTPRequestHandler with custom instance

this is my http server: from BaseHTTPServer import BaseHTTPRequestHandler,HTTPServer class test: def show(self): return " ... do it ? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Threaded, non-blocking websocket client

I am wanting to run a program in Python that sends a message every second via web sockets to a Tornado server. I have ... %d" % i) time.sleep(1) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to slice one MultiIndex DataFrame with the MultiIndex of another

I have a pandas dataframe with 3 levels of a MultiIndex. I am trying to pull out rows of this dataframe ... way to do something like this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to get meaningful network interface names instead of GUIDs with netifaces under Windows?

I use the netifaces module. import netifaces print netifaces.interfaces() but this shows the result below: ['{CDC97813- ... How can I get that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to use find_element_by_link_text() properly to not raise NoSuchElementException?

I have a HTML code like this: <div class="links nopreview"><span><a class="csiAction" href="/WebAccess/home. ... what I am doing wrong, please? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Numpy slicing from variable

I'm trying to slice a numpy array using a slice that is predefined in a variable. This works: b = ... save a slice-specifier like that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - IndentationError expected an indented block

Here is the code: def myfirst_yoursecond(p,q): a = p.find(" ") b = q.find(" ") str_p = p[0:a] ... an indented block What's wrong with my code? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Troubleshooting "TypeError: ord() expected string of length 1, but int found"

ERROR : TypeError: ord() expected string of length 1, but int found I am getting this error while compiling the ... get_route("www.google.com") See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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568 views

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python - matplotlib align twinx tick marks

Is it possible to make a plot with two independent y-axes such that the tick marks align? Below is an ... lines overlap for the two axes. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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180 views

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python - java.lang.OutOfMemoryError: Unable to acquire 100 bytes of memory, got 0

I'm invoking Pyspark with Spark 2.0 in local mode with the following command: pyspark --executor-memory 4g -- ... ... 8 more Driver stacktrace: See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to change all the dictionary keys in a for loop with d.items()?

I would like some help with understanding why this code is not working as expected. If one wants to change ... (4) pprint.pprint(name_dict) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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560 views

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python - How to surface plot/3d plot from dataframe?

I am new to pandas and matplotlib. Couldn't able to get exact reference to plot my DataFrame whose schema is as ... 298 298 10 10 297 301 48 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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412 views

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python - How to calculate differences between consecutive rows in pandas data frame?

I've got a data frame, df, with three columns: count_a, count_b and date; the counts are floats, and the dates are ... 00:00:00'): 171440.0}}) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Resizing an input image in a Keras Lambda layer

I would like my keras model to resize the input image using cv2 or similar. I have seen the use of ImageGenerator, ... . How would I do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Failed building wheel for spacy

I'm trying to install spacy by running pip install spacy for python version 3.6.1 ... UsersSH0042~1AppDataLocalTemppip-build-joi6voavmurmurhash See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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147 views

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python - DataFrame with MultiIndex to dict

I have a dataframe with a MultiIndex. I am wondering whether I created the data frame in the correct manner (see ... Is this an indexing issue? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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110 views

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python - Why variable = object doesn't work like variable = number

These variable assignments work as I expect: >>> a = 3 >>> b = a >>> print(a, b) (3, 3) ... affect the object that I borrowed properties from)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Deleting and changing a tkinter event binding

How do i stop an event from being processed or switch what function is called for it? Revised Code: from Tkinter ... = GUI(root) root.mainloop() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - SQLAlchemy Joinedload filter column

Hi I would like to do a filter with my query using a joinedload. But I can't seem to make it work. Below ... is way more than what I expect See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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224 views

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python - Extract files from zip file and retain mod date?

I'm trying to extract files from a zip file using Python 2.7.1 (on Windows, fyi) and each of my attempts ... creation date of a Windows file?. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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360 views

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python - Shuffling NumPy array along a given axis

Given the following NumPy array, > a = array([[1, 2, 3, 4, 5], [1, 2, 3, 4, 5],[1, 2, ... Not the real output though this clearly doesn't work. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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113 views

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python - Mulitprocess Pools with different functions

Most examples of the Multiprocess Worker Pools execute a single function in different processes, f.e. def foo(args ... about the worker pool? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

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python - Resize column width to fit into the QTableWidget pyqt

I've googled around but I'm not able to find a solution to my problem. I have a QTableWidget with 2 ... resizing to the 2 columns width. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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