Recent questions tagged Python

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I'm trying to plot log graph of blackbody frequency range 10^ to 10^19 for different temperatures

http://import numpy as np, pylab as pl Nfreq, NT = 2000, 6 T = [ 3000, 5000,10000,20000,30000] f = np.arange(0, Nfreq) nu = f*1e12 # Hz c = ... , fontsize=17) pl.savefig('Planck curve _.png', bbox_inches='tight', transparent=True) pl.show()...

asked May 26, 2022 in Technique[技术] by Sreekutty (100 points)

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1.6k views

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python 3.x - Readable, controllable iterators?

I'm trying to craft an LL(1) parser for a deterministic context-free grammar. One of the things I'd like to be able to use, because it would enable ... unreadable while loops, which is what I don't want. 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 - How to append more than 200 downloaded tweets to dataframe?

I am downloading more than twitters rate cap using a loop; however, when I try to append the list it returns an empty dataframe. My function looks ... not for handles which contain more than 200 tweets. 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 - Find different rows between 2 dataframes of different size with Pandas

I have 2 dataframes df1 and df2 of different size. df1 = pd.DataFrame({'A':[np.nan, np.nan, np.nan, 'AAA','SSS','DDD'], 'B':[np.nan,np.nan,' ... way to achieve my goal? Note: the solution is A B 0 DDD NaN 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 - PyDev Undefined variable from import error

I'm using virtualenv for Django project. From command line I can import modules hashlib and zipfile. But PyDev is reporting unresolved import for those two. (os ... in command line... What Can I do? 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 - Overlapping regex matches

I'm trying to create the following regular expression: return a string between AUG and (UAG or UGA or UAA) from a following RNA string: ... show me the errors in my regex pattern? See Question&Answers more detail:os...

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

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1.6k views

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python - 'Invalid input syntax for type inet' db error in Django app with postgres and Gunicorn+Nginx as reverse proxy

Can you help me decipher this rather esoteric error? Everything's fine when I fire up the application, but crashes the moment I try to login. ... you need something db related. Just ask away! 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 - window in pygame freeze while waiting

I'm using pygame for my game and its online but the problem is that whenever the main loop of the game waits for the socket from the server its freezes ... the example: https://i.stack.imgur.com/b4Qx8.png See Question&Answers more detail:os...

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

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1.7k views

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python - Annotation of horizontal bar graphs in matplotlib

I need to annotate horizontal bar graphs. I am able to annotate vertical bar graphs using the example shown in matplotlib website but a similar idea for ... show() Any help appreciated, 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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1.7k views

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python - Pandas boolean comparisson on dataframe

I am getting the error when I make a comparison on a single element in a dataframe, but I don't understand why. I have a dataframe df with timeseries ... in the if expression? This makes no sense to 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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1.9k views

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python - this constructor takes no arguments

I'd like to make a simple calculator in Tkinter. I've got few lines of code and want to check if it works. But then I recevie such error: "Calc(T.Tk() ... (self): self.main.mainloop() Calc(T.Tk()).run() See Question&Answers more detail:os...

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

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1.9k views

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python - Selenium calendar picker: I can click manually but Selenium cant click

I am attempting to choose date on a calendar on this website. On the first calendar (date from) I can choose the desired date using Selenium, however, I get the ... *[@id="{}"]'.format(month)) mm.click() See Question&Answers more detail:os...

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

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1.6k views

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python - How to merge csv files onto a single file on condition and adding file name as a column?

I have multiple csv files on folder. The column headers are different but column datas are same. The number inside the bracket is actual column name. Item(67) ... 101 102 104 103 File2 4 112 113 119 117 See Question&Answers more detail:os...

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

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2.1k views

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python - Pass connected SSL Socket to another Process

I am struggling to find a mechanism to send a request to the target server and when the socket has data to be read, pass the socket to another ... read normally) using Master Key from openssl's session ? See Question&Answers more detail:os...

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

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2.0k views

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python - How to sort a text file line-by-line

I need to sort a text file in ascending order. Each line of the text file starts with an index, as seen below: 2 0 4 0d 07:00:38.0400009155273 3 0 ... noob-ness, I haven't got a lot of experience coding. See Question&Answers more detail:os...

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

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1.6k views

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python - Swap slices of indexes using a function

Follow-up question of: Python swap indexes using slices r = ['1', '2', '3', '4', '5', '6', '7', '8'] If I want to swap slices, using a function, what ... 5 + 6 + 7 in r: swap(2:4,4:7) Is this 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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1.9k views

1 answer

python 2.7 - DLL load failed with PyQGIS

I've already asked this question in the "gis.stackexchange" forum, but it seems to be more appropriate for this one. I am having problems with Python ... the one that is included in the QGIS package). See Question&Answers more detail:os...

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

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1.8k views

1 answer

python - Odd behavior of numpy.all with object dtypes

Given an array of dtype=object, numpy.all/any return the last object. For example: >>> from string import ascii_lowercase >>> x = np.array( ... with this can find this information out more efficiently. See Question&Answers more detail:os...

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

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1.6k views

1 answer

python - Can I choose the parent class of a class from a fixed set of parent classes conditionally in the __init__ function?

I have a child class with two parents with identical function names. I need to decide (based on type of object being created) within the constructor (__init__) that which parent ... c('a').x() c('b').x() See Question&Answers more detail:os...

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

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1.9k views

1 answer

python - Bar graph in subplot2grid

I want to have several subplots, two of which showing frames from a video feed, and a third showing computed results as a bar graph. After ... update together with other data from subplots? 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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1.9k views

1 answer

python - How to make a Django-Rest-Framework API that takes POST data?

I'm building a Django application with Django-Rest-Framework APIs. I have built an API endpoint as follows. I want to be able to POST data from my browser ... I tried that but still couldn't make it work) See Question&Answers more detail:os...

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

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1.6k views

1 answer

python - Find Nearest Transition in N-dimensional Array

I want to find index of the nearest transition in a numpy ndarray of integers given a current index in an efficient manner. Transition means a change ... like xgboost, and unlike SVM and decision trees). See Question&Answers more detail:os...

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

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1.8k views

1 answer

python - Jupyter Notebook opens an empty browser

Before I've installed python 3.6 and update all (conda update --all) my Jupyter Notebook just stopped to works. When I launch it, just an empty ... ReferenceError: require is not defined at VM17 tree:24 See Question&Answers more detail:os...

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

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1.7k views

1 answer

python 3.x - Invalid relative import to parent folder

Given the following folder structure scripts __init__.py prepare_dot_env.py random_folder __init__.py index.py Take the import statement from ..prepare_dot_env import ... fine. What's the catch 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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1.6k views

1 answer

python - Dragging object along x-axis in pygame

I want to be able to drag the blue object along the x-axis (black line) using mouse so that it does not move in y-direction. When I try to drag ... screen, (0, 0, 250), object_1) pygame.display.update() See Question&Answers more detail:os...

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

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1.8k views

1 answer

python - Converting floating ratios to int

I need to convert float ratios to their integer equivalent 0.5:1 ---should convert to ---> 1:2 0.5:0.6:1 ---should convert to -- ... (smallest integer ratio) My googling produced no results in this regard See Question&Answers more detail:os...

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

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1.6k views

1 answer

python - Excel Column Number to Text

When using openpyxl, there are times that I can only refer to columns in Excel worksheets via their column name, not their numerical index. It took ... all start on the least element and continue upwards See Question&Answers more detail:os...

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

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1.6k views

1 answer

python - I am trying to run appcfg.py from CMD. instead of deploying, its being edited in google chrome

I installed python 2.7.13 and the google original App Engine SDK for PHP. I created my first project on google console and When I am ... chrome. Please refer attached picture chrome editing appcfg.py See Question&Answers more detail:os...

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

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