Recent questions tagged python

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python - Why not os.path.join use os.path.sep or os.sep?

As we know, windows accept both "" and "/" as separator. But in python, "" is used. For example, call os. ... of windows don't support "/"? 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 - Sort all columns of a pandas DataFrame independently using sort_values()

I have a dataframe and want to sort all columns independently in descending or ascending order. import pandas ... without the lambda function? 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 Correlated Update with Multiple Columns?

This question has been asked multiple times on stackoverflow, but they all appeared to be over a year old so I figured ... foobar.id = foo.id ) 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 - PyQt - Modify GUI from another thread

I'm trying to modify my main layout from another thread. But the function run() is never called and i'm having ... ) but it didn't work either. 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 - Tkinter: Addressing Label widget created by for loop

The following is my script. Basically, it will ask the user to input a number into the Entry box. Once the ... ..)) of the individual labels? 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 track the mouse over the matplot's canvas in QWidget?

I want to track the mouse's position over a matplot's canvas in real-time. For now, I built a MplWidget that ... self, e): print('click!') 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 - Creating a new column depending on the equality of two other columns

l want to compare the values of two columns where I create a new column bin_crnn. I want 1 if they are equals or 0 if ... , a.any() or a.all(). 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 - Multithreading with Pygame

I'm having some trouble writing a simple Pygame application that uses threads. Please keep in mind that this is the ... am I doing wrong here? 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 install this wheel?

I managed to install pip but when I use pip to install the downloaded wheel, it prints: C:Python34Scriptspip ... use PowerShell, please help! 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 - Read multiple csv files into separate dataframes using pandas

I like to read two csv files from a particular folder into two separate dataframes. The two file names are: ... different files (second 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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python - loop through rows of one csv file to find corresponding data in another

I got an interesting problem: file1.csv has a few hundred rows like: Code,DTime 1,2010-12-26 17:01 2, ... search DateTime in file2? Thanks guys 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 - Using range in regex for Arabic letters

When using Regex in Python, it's easy to use brackets to represent a range of characters a-z, but this doesn't ... range how can this be fixed? 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 - Polar plot of a function with negative radii using matplotlib

The following python code should plot r(theta) = theta on the range [-pi/2, pi/2]. import matplotlib.pyplot ... the negative values of r(theta)? 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 imaging library - How to install pre-built Pillow wheel with libraqm DLLs on Windows?

I tried using the pre-built wheels for Pillow and corresponding libraqm DLL from here: https://www.lfd.uci.edu/~ ... on images, as shown here. 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 - Can't play HTML5 video using Flask

I'm using Flask to serve .m3u8 and .ts files to simulate a vod stream. The video player does not stream the file ... this and how can I fix it? 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 - Syntax error in ternary if-else statement

We can use if-else like this: statement if condition else statement but there are some problems here and I ... Can you explain the difference? 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 - pandas - scatter plot with different color legend for each point

Starting from the following example: fig, ax = plt.subplots() df = pd.DataFrame({'n1':[1,2,1,3], 'n2' ... "color generator" to loop within it. See Question&Answers more detail:os...

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

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366 views

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python - ne_chunk without pos_tag in NLTK

I'm trying to chunk a sentence using ne_chunk and pos_tag in nltk. from nltk import tag from nltk.tag import ... 'GPE' means? Thanks in advance 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 fix socket.gaierror: (11004, 'getaddrinfo failed') error in GAE?

I'm using Aptana and GAE. When I run GAE launcher or run a server in Aptana 3, I get this error... I've ... :57:24 (Process exited with code 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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365 views

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python - How to reconfigure tkinter canvas items?

I don't know if this question has duplicates , but i haven't found one yet. when using python you can ... ]=K.create_rectangle(new options...) See Question&Answers more detail:os...

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

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163 views

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python - What is the meaning of conda's build string?

If I run conda info sphinx from the command line, the last entry as of August 24, 2017, is sphinx ... interpereter required by a package? See Question&Answers more detail:os...

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

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363 views

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python - Catch mouse button pressed signal from qComboBox popup menu

I have made multi-select QComboBox. Items are checkable (every item have check box and text value). CheckBox ... here return True return False 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 - Converting empty strings to 0 using Numpy

I have a numpy array where each element looks something like this: ['3' '1' '35' '0' '0' '8. ... strings are causing problems in the conversion. 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 - Why is Firestore rounding 64 bit integers?

I'm trying to store 64 bit integers from a python program in my Firestore database. The problem is that it ... . What could the problem be? See Question&Answers more detail:os...

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

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534 views

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python - sys.getsizeof(list) returns less than the sum of its elements

I'm curious - why does the sys.getsizeof call return a smaller number for a list than the sum of its elements? ... Size of list: 112 How come? See Question&Answers more detail:os...

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

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235 views

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python - 100% Stacked Bar Chart in MatPlotLib

I'm trying to create a 100% Stacked Bar Chart in MatPlotLib using the College Scorecard data from this site. ... this stacked 100% Bar Chart? See Question&Answers more detail:os...

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

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443 views

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python - Matplotlib Updating slider widget range

I am trying to write a small bit of code that interactively deletes selected slices in an image series using matplotlib ... = '__main__': main() See Question&Answers more detail:os...

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

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121 views

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python - matching all characters in any order in regex

I'm a regex newbie, but I understand how to match any characters in a regex query in order (ex. [abc] will ... sure if this matters or not). See Question&Answers more detail:os...

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

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