Recent questions tagged Python

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python - How do I get rid of the "u" from a decoded JSON object?

I have a dictionary of dictionaries in Python: d = {"a11y_firesafety.html":{"lang:hi": {"div1": "http://a11y.in/ ... How to get rid of that "u"? 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 - Does SQLAlchemy save order when adding objects to session?

Does this assert always pass or not? In other words, does SQLAlchemy save the order (in generating INSERT queries) ... , sqlite is for testing. 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 - psycopg - Get formatted sql instead of executing

I have a piece of Python code, that interacts with a PostgreSQL database via psycopg. All literature warns against ... in the psycopg module? See Question&Answers more detail:os...

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

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550 views

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python - aws - "Unable to import module 'process': /var/task/numpy/core/multiarray.so: invalid ELF header"

Using aws lambda I am receiving the following error when the script is run with the numpy module: Unable to ... "ref" module on AWS Lambda 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 - Asyncio RuntimeError: Event Loop is Closed

I'm trying to make a bunch of requests (~1000) using Asyncio and the aiohttp library, but I am running into a ... 't see how that is possible. 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 - OpenCv error can't open camera through video capture

I was using my cam through opencv and suddenly after restarting I ran my code it shows below error: [ WARN:0] ... How can I fix this issue? 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 - Splitting path strings into drive, path and file name parts

I am new to python and coding in general. I am trying to read from a text file which has path names on ... only want the path and file name. 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 - Using Numpy with pypy

I am using some numpy tools (mainly arrays) and I wanted to run the script with pypy, but i can't make it work. ... and second: How can I do it? 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 - Convert string to integer using map()

In the following i am trying to convert the first list to a integer list using the map function how can i achieve this ... T3=[13,17,18,21,32] See Question&Answers more detail:os...

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

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452 views

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python - have a url that accepts all characters

I want a url that accepts all characters,for example: (r'^company/(?P<key>[a-zA-Z]+)/doclist/$','CompanyHub. ... ,... how can I do this? See Question&Answers more detail:os...

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

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851 views

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python - Singleton array array(<function train at 0x7f3a311320d0>, dtype=object) cannot be considered a valid collection

Not sure how to fix . Any help much appreciate. I saw thi Vectorization: Not a valid collection but not sure ... not sure if i understood this See Question&Answers more detail:os...

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

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476 views

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python - Detect whether a dataframe has a MultiIndex

I am building a new method to parse a DataFrame into a Vincent-compatible format. This requires a standard ... for the presentation stage.) See Question&Answers more detail:os...

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

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840 views

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python - Asyncio: Weirdness of Task exception was never retrieved

Lets assume I have a simple code: import asyncio async def exc(): print(1 / 0) loop = asyncio.get_event_loop() ... the time of output of error? 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 - numpy "TypeError: ufunc 'bitwise_and' not supported for the input types" when using a dynamically created boolean mask

In numpy, if I have an array of floats, dynamically create a boolean mask of where this array equals a ... 'bool') Why the difference? See Question&Answers more detail:os...

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

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500 views

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python - How do I generate permutations of length LEN given a list of N Items?

Note: I'm working in python on this. For example, given a list: list = ['a','b','c','d', ... arbitrary length permutations. Thanks for any help! See Question&Answers more detail:os...

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

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500 views

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python - clone element with beautifulsoup

I have to copy a part of one document to another, but I don't want to modify the document I copy ... do this without corrupting a document? See Question&Answers more detail:os...

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

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383 views

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python - xmltodict does not return a list for one element

The following Code produces an error, if there is only one "car" in "garage": import xmltodict mydict = ... there is only one element? See Question&Answers more detail:os...

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

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883 views

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python - Why am I getting "NameError: global name 'open' is not defined" in __del__?

I'm getting a NameError in the __del__ function of a class. I do not understand why 'open' is not accessible ... : name 'open' is not defined See Question&Answers more detail:os...

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

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357 views

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python - Split list into different variables

I have a list like this: [('love', 'yes', 'no'), ('valentine', 'no', 'yes'), ('day', 'yes','yes')] How do ... 'no', 'yes') ('day', 'yes','yes') See Question&Answers more detail:os...

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

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722 views

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python 2.7 - Generate random number with jinja2

I need to generate a random number between 1 and 50. Aparently the random filter needs a sequence. How can I create a ... [1,n,50]|random() }} See Question&Answers more detail:os...

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

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475 views

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python - Pandas: Remove rows at random without shuffling dataset

I've got a dataset which needs to omit a few rows whilst preserving the order of the rows. My idea was to use ... . How should I go about this? See Question&Answers more detail:os...

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

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587 views

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python - How to count nan values in a pandas DataFrame?

What is the best way to account for (not a number) nan values in a pandas DataFrame? The following code: import ... .0 with Anaconda 2.4.0. See Question&Answers more detail:os...

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

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452 views

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python - Group a multi-indexed pandas dataframe by one of its levels?

Is it possible to groupby a multi-index (2 levels) pandas dataframe by one of the multi-index levels ? The only way ... and I want to know how. See Question&Answers more detail:os...

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

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1.3k views

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python - append subprocess.Popen output to file?

I can successfully redirect my output to a file, however this appears to overwrite the file's existing data: ... module that facilitates this. See Question&Answers more detail:os...

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

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691 views

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python - mechanize select form using id

I am working on mechanize with python. <form action="/monthly-reports" accept-charset="UTF-8" method="post" id=" ... the form using it's id? See Question&Answers more detail:os...

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

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736 views

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python - Django default=timezone.now() saves records using "old" time

This issue has been occurring on and off for a few weeks now, and it's unlike any that has come up with ... . Anyway, thanks for the help! See Question&Answers more detail:os...

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

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450 views

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python - How can I create a slice object for Numpy array?

I've tried to find a neat solution to this, but I'm slicing several 2D arrays of the same shape in ... Is this something that numpy supports? See Question&Answers more detail:os...

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

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419 views

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python - Would you prefer using del or reassigning to None (garbage collecting)

Consider following code: if value and self.fps_display is None: self.fps_display = clock.ClockDisplay() elif not ... is better python cleanup ? See Question&Answers more detail:os...

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

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