Recent questions tagged Python

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How do I merge a list of lists? [['A', 'B', 'C'], ['D', 'E', 'F'], ['G', 'H', 'I']] into ['A', 'B', 'C ... >G</tr>', '<tr>H</tr>', '<tr>I</tr>'] See Question&Answers more detail:os...

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

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858 views

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python flask can't find '__main__' module in ''

Hi All I am just learning about flask. I have used pip to install it. Then when I run this basic code I get ... 't find '__main__' module in '' See Question&Answers more detail:os...

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

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536 views

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python - How do I get the visitor's current timezone then convert timezone.now() to string of the local time in Django 1.4?

I understand that the best practice now with Django 1.4 is to store all datetime in UTC and I agree with that ... (EST = Eastern Standard Time)? See Question&Answers more detail:os...

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

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414 views

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python - Is is safe to use a function accepts kwargs keyword arguments that are not identifiers?

In Python, is it safe to give keyword arguments that are not Python identifiers to a function? Here is an ... Is this a reliable feature? See Question&Answers more detail:os...

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

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407 views

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python - Pandas using row labels in boolean indexing

So I have a DataFrame like this: df = pd.DataFrame(np.random.randn(6, 3), columns=['a', 'b', 'c']) a b c 0 ... ) & (df.__index__.isin([0,2,4]))] See Question&Answers more detail:os...

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

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510 views

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python - REGEX-String and escaped quote

How to get what is between the quotes in the following two texts ? text_1 = r""" "Some text on "two" lines ... 'Another text on "three" lines' ] See Question&Answers more detail:os...

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

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563 views

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python - True + True = 2. Elegantly perform boolean arithmetic?

I have nested lists of truth values representing SAT forumlas, like this: [[[0, True, False], [0 ... boolean arithmetic with boolean variables? See Question&Answers more detail:os...

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

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593 views

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python - Update properties of a kivy widget while running code

I want to update the properties of a kivy widget while running something... Example: class app(App): def ... text change in update function. See Question&Answers more detail:os...

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

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519 views

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python - set parameters in EventInput in Dialogflow V2 API

I desperatly try to set parameters in a dialogflow.types.EventInput in python. This doc says the ... interpreter shutdown): /EventInput See Question&Answers more detail:os...

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

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299 views

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python - How to make values in list of dictionary unique?

I have a list of dictionaries in Python, which looks like following: d = [{feature_a:1, feature_b:'Jul', ... I achieve this? Many 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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554 views

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python - How to count the most frequent letter in a string?

class MyString: def __init__(self, myString): self.__myString = myString def countWord(self): count = len(self.__myString ... , "times") main() See Question&Answers more detail:os...

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

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858 views

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python - Masking BGR image using a 2D mask

I have a three-dimensional array (image) with shape (480, 640, 3). Here, the 3 refers to BGR color ... better way to approach this problem? See Question&Answers more detail:os...

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

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363 views

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python - how to avoid using _siftup or _siftdown in heapq

I have no idea how to solve following problem efficiently without using _siftup or _siftdown: How to restore the ... no answer to my problem See Question&Answers more detail:os...

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

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586 views

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python - Split one file into multiple files based on pattern (cut can occur within lines)

A lot of solutions exist, but the specificity here is I need to be able to split within a line, the cut ... , as I understand it better. See Question&Answers more detail:os...

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

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448 views

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python - how to check if the urllib2 follow a redirect?

I've write this function: def download_mp3(url,name): opener1 = urllib2.build_opener() page1 = opener1.open(url) ... not working.. Thank you See Question&Answers more detail:os...

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

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608 views

1 answer

python - Installing OpenCV with Conda and Spyder

I'm having trouble installing OpenCV with Conda. I tried running numerous commands, none of which worked. For ... OpenCV in Spyder? 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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482 views

1 answer

python - How do I use Selenium's wait?

I'm having trouble on figuring out how to use Selenium's wait function. What I'm trying to do is check ... must be a sequence, not WebElement See Question&Answers more detail:os...

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

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303 views

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python - PySpark Numeric Window Group By

I'd like to be able to have Spark group by a step size, as opposed to just single values. Is there anything in ... step=2, start=10)).count() See Question&Answers more detail:os...

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

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642 views

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python - MultiPartParserError :- Invalid boundary

Im trying to send some data and file using Python requests module to my django rest application but get the below ... 'request ==', request.data See Question&Answers more detail:os...

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

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487 views

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python - How to add a mean and median line to a Seaborn displot

Is there a way to add the mean and median to Seaborn's displot? penguins = sns.load_dataset("penguins") g = ... ) g.map(specs,'body_mass_g' ) See Question&Answers more detail:os...

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

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660 views

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python - Detect holes, ends and beginnings of a line using openCV?

I'm trying to create a Python script that detects holes, ends and beginnings of a line. I thought that openCV ... to get around this problem. See Question&Answers more detail:os...

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

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368 views

1 answer

python - Why use flask open_resource

while reading flask api documentation, I came across this open_resource method that opens file, like this with app. ... open can't already 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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483 views

1 answer

python - django Building a queryset with Q objects

I have a form that allows you to pick multiple project types to filter from. For instance, say you have the ... a queryset with Q objects? See Question&Answers more detail:os...

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

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591 views

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python - plot SVG within matplotlib figure (embedded in wxPython)

I am trying to embed a SVG image within a matplotlib subplot. matplotlib can only read PNGs natively, but ... vectors using matplotlib? 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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544 views

1 answer

python - Compare two pandas dataframe with different size

I have one massive pandas dataframe with this structure: df1: A B 0 0 12 1 0 15 2 0 17 3 0 18 4 1 45 ... or numpy to do it. Many thanks, Boris See Question&Answers more detail:os...

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

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465 views

1 answer

python - "Bad marshal data" Django development server error

Got this error while insterting data into my MySQL database ValueError at /admin/arbkdb/arbkcompany/ bad marshal ... /master/arbkdb/models.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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1.2k views

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python - matplotlib 2D plot from x,y,z values

I am a Python beginner. I have a list of X values x_list = [-1,2,10,3] and I have a list of Y values ... .show() How to get this done correctly? See Question&Answers more detail:os...

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

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658 views

1 answer

python - Handle invalid/corrupted image files in ImageDataGenerator.flow_from_directory in Keras

I am using Python with Keras and running ImageDataGenerator and using flow_from_directory. I have some problematic image ... my code crashing. See Question&Answers more detail:os...

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

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