Recent questions tagged Python

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python - How to filter list of dictionaries with matching values for a given key

With an interface like a = copyf(dictlist, key, valuelist). >>> dictlist = [{'first': 'James', ' ... is effectively a csv.DictReader instance. 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 - DeprecationWarning: use options instead of chrome_options error using ChromeDriver and Chrome through Selenium on Windows 10 system

Trying to run this code on my windows 10 machine https://github.com/KalleHallden/reddit_automations/blame/master/ ... decouple is not working. 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 database outside the application context

I have an app factory like so db = SQLAlchemy() def create_app(environment): app = Flask(__name__) app.config. ... is using. Is this possible? 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 - Image Conversion - Cannot write mode RGBA as JPEG

I'm trying to resize & reduce quality of image before upload in project. Here's what I tried, def save(self): ... can we fix that? Thank You! 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 - Discord.py-rewrite wait_for() how do i use?

I can not really use wait_if () the way I want it, can anyone explain how to use wait_for ('message') and ... forgive me for any error...) 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 Date Range Monthly on Specific Day of Month

In Pandas, I know you can use anchor offsets to specify more complicated reucrrences: http://pandas.pydata.org/pandas- ... 26, freq="2W-FRI") 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 - Better way to create block matrices out of individual blocks in numpy?

Consider the code M=5;N=3; A11=np.random.rand(M,M); A12=np.random.rand(M,N); A21=np.random.rand( ... that this is reserved only for arrays. 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 can I grab the color of a pixel on my desktop? (Linux)

I want to grab the color of a pixel with known coordinates on my Linux desktop. Until now, I've used "import - ... , also please let me know :) 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 - Accessing total_seconds() in pandas data column

I want to create a new column in a pandas data frame that is the elapsed time from the start of the ... column s_df['delta_t'].total_seconds() 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 - Sum of digits in a string

if i just read my sum_digits function here, it makes sense in my head but it seems to be producing wrong ... '), it should produce 9 See Question&Answers more detail:os...

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

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139 views

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python - how to use dataframe between_time() function

I am trying to use the between_time function. I have formatted the string type time to datetime dataset['TimeStamp'] = ... I fix it. Thank you 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 - Pickle.dump to variable

I'm new in python and i wanted to know if there is a solution for this problem: I know that this may sound ... in a file saving into a variable? 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 - BeautifulSoup Object Will Not Pickle, Causes Interpreter to Silently Crash

I have a soup from BeautifulSoup that I cannot pickle. When I try to pickle the object the python interpreter silently ... it prints out u' '. 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 - PyInstaller error with PyQt when trying to build --onefile

I'm trying to compile a PyQt program using PyInstaller 1.5. Both of the following programs work fine for me ... ) Does anyone have any ideas? 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 many times does a for loop evaluate its expression list?

I have the following code: list1 = [4,1,2,6] for elem in sorted(list1): #some task I was wondering how ... list1) for elem in list1: #some task 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 - Pip install in Spyder

I'm using Python 3.6 through Spyder in Anaconda3. I have both the Anaconda installation and a "clean" python ... tell it to connect to Spyder? 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 - Reverse each word in a string

I am having a small problem in my code. I am trying to reverse the words and the character of a ... =reverseWord+word+"" return reverseWord 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 - Pass list to function by value

I want to pass a list into function by value. By default, lists and other complex objects passed to function by ... I wanna not to change ad. 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 decompose a list

I remember I once seen a operator which is able to decompose a list in python. for example [[1],[2], ... operator, any help will be appreciated. See Question&Answers more detail:os...

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

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293 views

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python - How to round values only for display in pandas while retaining original ones in the dataframe?

I wish to only round values in the dataframe for display purposes, when I use head() or tail() but I ... Solved. Thanks for the quick response. See Question&Answers more detail:os...

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

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118 views

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python - Printing string with two columns

I'm trying to print a string with two fixed columns. For example, I'd like to be able to print: abc xyz abcde ... 2.6 and after version 2.6? See Question&Answers more detail:os...

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

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355 views

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python - Make a Scatter Plot in matplotlib with dates on x axis and values on y

I am having trouble making a scatter plot that has from a date array and a bunch of PM 2.5 values. My lists would ... 09-12'] PM_25 = [80, 55] 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 garbage collector behavior on compound objects

Does python garbage collector cleans up a compound object if some of its parts are still referenced e.g. def ... confirm the same through 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 - Using SPARQL for limited RDFS and OWL reasoning

What I'm currently using rdflib for creating and managing RDF graphs in Python. RDFlib doesn't do any RDFS or ... a way to get these results? 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 - Filter list of dictionaries

This is my example: dictlist = [{'first': 'James', 'last': 'Joule'}, {'first': 'James','last': 'Watt ... getdata.last and I would get "Doppler". See Question&Answers more detail:os...

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

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998 views

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python - Matplotlib rotate image file by X degrees

How can I rotate an image file and plot it in matplotlib? I know I can open it using PIL and rotate it, ... , transform=tr) fig.canvas.draw() 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 - Hist in matplotlib: Bins are not centered and proportions not correct on the axis

take a look at this example: import matplotlib.pyplot as plt l = [3,3,3,2,1,4,4,5,5,5,5,5,5,5,5 ... in the list, but they are all discrete. See Question&Answers more detail:os...

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

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161 views

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python - Stocking large numbers into numpy array

I have a dataset on which I'm trying to apply some arithmetical method. The thing is it gives me relatively ... as been crossed don't they? See Question&Answers more detail:os...

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

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